Journal Publications

Featured Publications:

Collection of Disks Mimics Earthquakes: “Continuously sheared granular matter reproduces in detail seismicity laws”

An interesting reading authored by S. Lherminier, R. Planet, V. Levy dit Vehl, G. Simon, L. Vanel, K.J. Måløy and O. Ramos on how 2D disks under stress replicate earthquakes. You can read more about this here

“Relations between Seepage Velocities in Immiscible, Incompressible Two-phase Flow in Porous Media”

The paper from A. Hansen, S. Sinha,  D. Bedeaux, S. Kjelstrup. M. Aa. Gjennestad and M. Vassvik on “Relations between Seepage Velocities in Immiscible, Incompressible Two-phase Flow in Porous Media” has become the most downloaded paper ever in Transport in Porous Media, the main journal in porous media research, since 1986.

 We demonstrate in the paper how certain easily overlooked symmetries in immiscible two-phase flow in porous media lead to new equations constraining how the two fluids move.  (A symmetry is a property that is unchanged after transforming the system.)  The ultimate goal of this work is to be able to present a complete theoretical description of immiscible two-phase flow in  the limit where the porous medium may be seen as a continuum, i.e. the scales where relative permeability theory today reigns

Abstract: Based on thermodynamic considerations, we derive a set of equations relating the seepage velocities of the fluid components in immiscible and incompressible two-phase flow in porous media. They necessitate the introduction of a new velocity function, the co-moving velocity. This velocity function is a characteristic of the porous medium. Together with a constitutive relation between the velocities and the driving forces, such as the pressure gradient, these equations form a closed set. We solve four versions of the capillary tube model analytically using this theory. We test the theory numerically on a network model.

 

Fig. 1

In the upper part of the figure, we see the REV from the side. There is a flow Q=Qw+Qn across  it. An imaginary cut is made through the REV in the direction orthogonal to the flow. In the lower left corner, the surface of the imaginary cut is illustrated. A magnification of the surface of the cut is shown in the lower right corner. The pore structure is illustrated as brown and black circles. The pores that are brown are filled with wetting fluid, and the pores that are black are filled with non-wetting fluid. The wetting fluid-filled pores form in total an area Aw, and the non-wetting fluid-filled pores form in total an area An. The total pore area of the imaginary cut in the lower left corner is Ap=Aw+An=Aϕ

“Verification of a Dynamic Scaling for the Pair Correlation Function during the Slow Drainage of a Porous Medium”

M. Moura, K. J. Måløy, E. G. Flekkøy, and R. Toussaint. “Verification of a Dynamic Scaling for the Pair Correlation Function during the Slow Drainage of a Porous Medium“. This paper has just been published by PRL (Physical Review Letters). In this paper we have experimentally verified a 30 years long prediction about how the relative probability of invasion of a pore in a porous medium varies with space and time. When a material full of pores (like a porous rock or a sponge) is soaked in a fluid and another fluid is forced into it, an interesting dynamics arises in which the invading fluid sequentially displaces the other one out of the pores. In the late 80s a group of researchers employed computer simulations to quantify the relative probabilities of such pore displacements, making numerical predictions about how this probability varies with space and time. – By using synthetic porous samples and modern image analysis techniques, we have been able to finally verify those predictions experimentally and to give a full theoretical explanation for the observations. The increased understanding of this kind of phenomena is relevant for many fields in which one fluid displaces another from a porous network, such as CO2 storage in subsea rocks and the remediation of contaminated soils. A popular science article about this work was published in Titan.

Diagram of the experimental setup. On top we show an image of the flow and in detail an enlargement in a section of the porous network, the defending wetting phase (liquid, blue), and the invading nonwetting phase (air, white).

“Critical Behavior in Porous Media Flow”

M. MouraK. J. Måløy and R. Toussaint. Critical Behavior in Porous Media Flow, 2017 EPL (Europhysics Letters)Volume 118. The article has been published by EPL (Europhysics Letters). This was project in which we have addressed the statistics of burst invasion events in porous media and also the power spectrum of pressure fluctuations associated with the bursts. The illustration shows the flow from left to right, during approx 82 h. Bursts color coded by their size normalized by a typical pore area (top) and randomly (bottom). The vast blue areas in the top image contain many smaller bursts (detail)

Poster: Fluid Topology in Drainage and Imbibition: Pore Scale Imaging, by: Synchrotron Tomography. Hamid H. Khanamiri, Ole Torsæter, Georg J. B. Voss.

Recent Publications:

A significant number of these articles have been in highly-cited peer-reviewed international journals such as Physical Review LettersEurophysics LettersJournal Of Non-Equilibrium Thermodynamics and Journal Of Petroleum Science And Engineering. Many of the articles have high citation indices and journal impact factors reflect well the published work of the centre.

2020

  1. B. Hafskjold, D. Bedeaux, S. Kjelstrup, Ø. Wilhelmsen (2020) Nonequilibrium thermodynamics of surfaces captures the energy conversions in a shock wave. Chemical Physics Letters: X – Volume 7, July 2020, 100054. DOI: https://doi.org/10.1016/j.cpletx.2020.100054
  2. M. Aa. Gjennestad, Ø. Wilhelmsen (2020) Thermodynamic stability of volatile droplets and thin films governed by the disjoining pressure in open and closed containersLangmuir – Publication date 10 June 2020 ENERGISINT NTNU
  3. S. B. B. Solberg, S. Kjelstrup, E. Magnanelli, N. Kizilova, I. L. C. Barroso, M. Acquarone, L. Folkow (2020) Energy efficiency of respiration in mature and newborn reindeerJournal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology 2020 – 25 May 2020 ENERGISINT NTNU UiT
  4. W. Wu, M. H. Balci, S. Song, C. Liu, M. Fokine, F. Laurell, T. A. Hawkins, J. Ballato, U. Gibson (2020) CO2 laser annealed SiGe core optical fibers with radial Ge concentration gradientsOptical Materials Express 2020 – Volume 10, Issue 4, pp. 831-1128
    1 April 2020 – NTNU
  5. M. Aa. Gjennestad, M. Winkler, A. Hansen. Pore Network Modeling of the Effects of Viscosity Ratio and Pressure Gradient on Steady-State Incompressible Two-Phase Flow in Porous MediaTransport in Porous Media 2020 – 132pages 355–379 (2020) –  Published 7 Mars 2020 – NTNU
  6. S. N. Olufsen, A. H. Clausen, D. W. Breiby, O. S. Hopperstad (2020) X-ray computed tomography investigation of dilation of mineral-filled PVC under monotonic loadingMechanics of materials (Print) 2020; Volume 142. March 2020 – NTNU
  7. D. Kingston, Ø. Wilhelmsen, S. Kjelstrup. Minimum entropy production in a distillation column for air separation described by a continuous non-equilibrium modelChemical Engineering Science 2020 ;Volume 218. Available online 6 February 2020 ENERGISINT NTNU
  8. A. L. Bila, J. Å. Stensen, O. Torsæter (2020) Polymer-functionalized silica nanoparticles for improving water flood sweep efficiency in Berea sandstones.. E3S Web of Conferences 2020; Volume 146.(02001) published online 5 February 2020 – NTNU SINTEF
  9. N. Kizilova, M. Sauermoser, S. Kjesltrup, B. Pollet (2020) Fractal-Like Flow-Fields with Minimum Entropy Production for Polymer Electrolyte Membrane Fuel CellsEntropy 2020; Volume 22.(2) Published: 4 February 2020 NTNU
  10. A. Aasen, D. Reguera, Ø. Wilhelmsen (2020) Curvature Corrections Remove the Inconsistencies of Binary Classical Nucleation TheoryPhysical Review Letters 2020; Volume 124.(4) Publishd 29 January 2020 ENERGISINT NTNU
  11. M. Moura, K. J. Måløy, E. G. Flekkøy, R. Toussaint (2020) Intermittent Dynamics of Slow Drainage Experiments in Porous Media: Characterization Under Different Boundary Conditions. Frontiers in Physics 2020 ; Volume 7. 14 January 2020 UiO
  12. P. A. Slotte, C. F. Berg, H. H. Khanamiri (2020) Predicting Resistivity and Permeability of Porous Media Using Minkowski Functionals. Transport in Porous Media 2020 ;Volume 131.(2) p. 705-722 Published 23 Novembre 2019 – NTNU

2019

  1. P. Rehner, A. Aasen, Ø. Wilhelmsen (2019) Tolman lengths and rigidity constants from free-energy functionals – General expressions and comparison of theories. Published 27 December 2019 – Journal of Chemical Physics 2019, Volum 151 (24) s. 1-14 ENERGISINT NTNU J. 
  2. Aleksans, D. Koehn, R. Toussaint, G. Daniel (2019) Simulating Hydraulic Fracturing: Failure in soft versus hard rocksPure and Applied Geophysics Published 28 November 2019 s. 1-19 UiO
  3. J. T. Kjellstadli (2019) Burst Distribution by Asymptotic Expansion in the Equal Load Sharing Fiber Bundle Model.Frontiers in Physics 2019 – 28 November 2019 – Volum 7 – NTNU
  4. E.G. Flekkøy, M. Moura, K:J. Måløy (2019) Dynamics of the fluctuating flying chain. Published: 19 November 2019. Front. Phys. 7:187. doi: 10.3389/fphy.2019.00187
  5. P. A. Slotte, C. F. Berg, H. H. Khanamiri (2019) Predicting Resistivity and Permeability of Porous Media Using Minkowski Functionals.Transport in Porous Media. Volume 130, no.3, December 2019, pp 1-18. First online: 23 November 2019. DOI https://doi.org/10.1007/s11242-019-01363-2
  6. E. G. Flekkøy, J. Luu, R. Toussaint (2019) The Interstellar Object ’Oumuamua as a Fractal Dust Aggregate. The Astrophysical Journal Letters, 885:L41 (6pp), 2019 November 10 . doi: https://doi.org/10.3847/2041-8213/ab4f78
  7. R. de Miguel, J.M. Rubi (2019) Negative thermophoric force in the strong coupling regime. Physical Review Letters. Accepted 18 October 2019
  8. J. T. Kjellstadli, E. Bering, S. Pradhan, A. Hansen (2019) Can Local Stress Enhancement Induce Stability in Fracture Processes? Part II: The Shielding Effect. Frontiers in Physics 15 October 2019 – Volum 7 – NTNU
  9. M. Aa. Gjennestad, Ø. Wilhelmsen (2019) Thermodynamic stability of droplets, bubbles and thick films in open and closed pores. Fluid Phase Equilibria 2019 Volum 505 ENERGISINT NTNU
  10. M. Farin, A. Mangeney, J. De Rosny, R. Toussaint, P. T. Trinh (2019) Relations between the characteristics of granular column collapses and resultant high‐frequency seismic signals. Journal of Geophysical Research (JGR): Earth surface 2019 Volum 124 (12) s. 2987-3021 UiO Published 9 October 2019
  11. B. Najafiazar, D. Wessel-berg, P.E.S. Bergmo, C. Simon, J. Yang, O. Torsæter, T. Holt (2019) Polymer Gels Made with Functionalized Organo-Silica Nanomaterials for Conformance Control.Energies 2019 – Published 30 September 2019 Volum 12 (19) s. 1-28 NTNU SINTEF.
  12. A. Arango-Restrepo and J.M. Rubi (2019) The Soret coefficient from the Faxèn theorem for a particle moving in a fluid under a temperature gradient. The European Physical Journal E. 2019 May 14;42(5):55. doi: 10.1140/epje/i2019-11822-y.
  13.  E. Magnanelli, S.B.B. Solberg, S. Kjelstrup (2019) Nature-inspired geometrical design of a chemical reactor. Chemical Engineering Research and Design, volume 152, December 2019, Pages 20-29, available online 1 October 2019. https://doi.org/10.1016/j.cherd.2019.09.022
  14. M. Moura, E.G. Flekkøy, K.J. Måløy, G. Schäfer, R. Toussaint (2019) Connectivity enhancement due to film flow in porous media. Phys. Rev. Fluids 4, 094102, published 24 September 2019. https://doi.org/10.1103/PhysRevFluids.4.094102
  15. B. Hafskjold, K. P. Travis, A. B. Hass, M. Hammer, A. Aasen, Ø. Wilhelmsen (2019) Thermodynamic properties of the 3D LennardJones/spline modelPublished online 17 September 2019. Molecular Physics. https://doi.org/10.1080/00268976.2019.1664780
  16. Xu L, Szymczak P, Toussaint R, Flekkøy EG and Måløy KJ (2019) Experimental Observation of Dissolution Finger Growth in Radial Geometry. Front. Phys. 7:96. doi: 10.3389/fphy.2019.0009
  17. E.A. Chavez Panduro, M. Torsæter, K. Gawel, R. Bjørge, A. Gibaut, A. Bonnin, C. M. Schlepütz, Dag. w. Breiby (2019) Computed X-ray Tomography Study of Carbonate Precipitation in Large Portland Cement Pores. Crystal growth & design 2019, Volum 19 (10) s. 5850-5857 USN NTNU SINTEF
  18. C. J. M. Rubi (2019) Entropic diffusion in confined soft-matter and biological systems. 12 August 2019 Europhysics lettes 209, Volum 127 NTNU
  19. A. Turquet, T. Bodin, P. Arroucau, M. Sylvander, K. Manchuel (2019) Quantifying Location Uncertainties in Seismicity Catalogues: Application to the Pyrenees. J. Seismol. Published online 9 August 2019
  20. C.F. Berg, A. Danilova, M. Liu (2019) Upscaling of polymer adsorption. Journal of Petroleum Science and Engineering  2019, Volum 179, s. 655-668 August 2019 NTNU Journal of Petroleum Science and Engineering 2019
  21. J. T. Kjellstadli, E. Bering, M. Hendrick, S. Pradhan, A. Hansen (2019) Can Local Stress Enhancement Induce Stability in Fracture Processes? Part I: Apparent StabilityFrontiers in Physics 2019 ;Volume 7. NTNU. Published 24 July 2019
  22. T. Ramstad, C. F. Berg, K. Thompson (2019) Variation of Elastic Energy Shows Reliable Signal of Upcoming Catastrophic Failure. Frontiers in Physics 2019 – 24 July 2019 . Volum 7 NTNU
  23. S. Pradhan, J. T. Kjellstadli, A. Hansen (2019) Variation of Elastic Energy Shows Reliable Signal of Upcoming Catastrophic Failure. Front. Phys.       Published 24 July 2019
  24. S. Roy, A. hansen, S. Sinha (2019) Effective rheology of two-phase flow in a capillary fiber bundle model. 9 July 2019 – Frontiers of Physics 2019, Volum 7 NTNU
  25. K. S. Olsen, E. G. Flekkøy, L. Angheluta, J. Campbell, K. J. Måløy, B. Sandnes (2019) Geometric universality and anomalous diffusion in frictional fingers. New Journal of Physics 2019 – Published 17 June 2019 – Volum 21 (6) UiO
  26. X. Cheng, J. Kleppe, O. Torsæter (2019) Simulation study of surfactant injection in a fractured coreJournal of Petroleum Exploration and Production Technology 2019 p. 1-12 NTNU. Online 01 June 2019 
  27. A. L. Bila, J. Å. Stensen, O. Torsæter (2019) Experimental Investigation of Polymer-Coated Silica Nanoparticles for Enhanced Oil RecoveryNanomaterials 2019 ;Volume 9.(822) p. 1-25 NTNU SINTEF. Published: 31 May 2019
  28. N. Patil, T. Narayanan, L. Michels, E.T.B. Skjønsfjell, M. Guizar-Sicairos, N. Van den Brande, R. Claessens, B. Van Mele, D.W. Breiby (2019) Probing Organic Thin Films by Coherent X‑ray Imaging and X‑ray Scattering. ACS Applied Polymer Materials 2019 – 28 May 2019 Volum 1 s. 1787-1797 NTNU
  29. M. Moura (2019) Como limpar uma praia II. Jornal Vanguarda 18 May 2019 UiO
  30. M. Moura (2019) Como limpar uma praia I. Jornal Vanguarda 18 May 2019 UiO
  31. S. Li, O. Torsæter, H. C. Lau, N. Hadia, L. P. Stubbs (2019). The Impact of Nanoparticle Adsorption on Transport and Wettability Alteration in Water-Wet Berea Sandstone: An Experimental Study.. Frontiers in Physics 2019 ;Volume 7.(74) p. 1-12. NTNU. Published 14 May 2019 
  32. S. Kandhasamy, G. M. Haarberg, S. Kjelstrup, A. Solheim (2019) Gas electrodes with nickel based current collectors for molten carbonate electrolyte thermo-electrochemical cellsJournal of Energy Chemistry 2019 NTNU SINTEF. Online 07 May 2019 
  33. S. Kandhasamy, A. Støre, G. M. Haarberg, S. Kjelstrup, A. Solheim (2019) Thermal Conductivity of Molten Carbonates with Dispersed Solid Oxide from Differential Scanning CalorimetryMaterials 2019 ;Volume 12.(9) NTNU SINTEF. Published 8 May 2019 
  34. R. C. G. Aadland; T. D. Jakobsen, E. B. Heggset; H. Long-Sanouiller; S. C. Simon; K. G. Paso; K. Syverud, O. Torsæter (2019). High-Temperature Core Flood Investigation of Nanocellulose as a Green Additive for Enhanced Oil RecoveryNanomaterials 2019 ;Volume 9.(665) p. 1-25
    NTNU, published: 27 April 2019.

  35. O. Galteland, D. Bedeaux, B. Hafskjold, S. Kjelstrup (2019) Pressures Inside a Nano-Porous Medium. The Case of a Single Phase FluidFrontiers in Physics 2019 NTNU. Published: 24 April 2019
  36. S. Lherminier, R. Planet, V. Levy dit Vehel, G. Simon, L.Vanel,  K. J. Måløy, and O. Ramos (2019) Continuously Sheared Granular Matter Reproduces in Detail Seismicity Laws. Physical Review Letters 122, 218501
  37. S. Song, K. Lønsethagen, F. Laurell, T. A. Hawkins, J. Ballato, M. Fokine, U. Gibson (2019) Laser restructuring and photoluminescence of glass-clad GaSb/Si-core optical fibresNature Communications 2019 ;Volume 10. NTNU. Published 17 April 2019 
  38. K.R. Kristiansen, M. Barragan, S. Kjelstrup (2019) Thermoelectric power of ion exchange membrane cells relevant to reverse electrodialysis plantsPhysical Review Applied. Published 12 April 2019
  39. G. Grimstad, S.A.G. Amiri, S. Nordal (2019). Relations and Links Between Soil Mechanics, Porous Media Physics, Physiochemical Theory, and Effective Medium Theory. Front. Phys. 7:41 Published 01 april 2019. https://doi.org.10.3389/fphy.2019.00041
  40. J. Zhang, G. Liu, Z. Cao, S. Tao, M. Felix, Y. ong, Y. Zhang (2019) Characteristics and formation mechanism of multi-source mixed sedimentary rocks in a saline lake, a case study of the Permian Lucaogou Formation in the Jimusaer Sag, northwest China. April 2019 – Marine and Petroleum Geology 2019, Volum 102, s. 704-724 NTNU
  41. A. L. Turquet, R. Toussaint, F. K. Eriksen, G. Daniel, OL, Lengline, E. G. Flekkøy, K. J. Måløy (2019)  Source Localization of Microseismic Emission During Pneumatic Fracturing. Geophysical Research Letters. Published March 4, 2019. DOI:10.1029/2019GL082198
  42. T. Schmiedel, O. Galland, Ø. T. Haug, G. Dumazer, H. Guillaume, C. Breitkreuz (2019). Coulomb failure of Earth’s brittle crust controls growth, emplacement and shapes of igneous sills, saucer-shaped sills and laccoliths. Earth and Planetary Sciences Letters, Volume 510, 161-172, published 15 March 2019. DOI: 10.1016/j.epsl.2019.01.011
  43. H. Ren, L. Shen, D. Wu, O. Aktas, T. A. Hawkins, J. Ballato, U. Gibson, A. Peacock (2019) Nonlinear optical properties of polycrystalline silicon core fibers from telecom wavelengths into the mid-infrared spectral regionOptical Materials Express 2019 ;Volume 9.(3) p. 1271-1279 NTNU. Published 19 February 2019
  44. S. Kjelstrup, D. Bedeaux, A. Hansen, B. Hafskjold, O. Galteland, Olav (2019) Non-isothermal Transport of Multi-phase Fluids in Porous Media. Constitutive Equations. Frontiers of Physics 2019 ;Volume 6. p. 1-12 NTNU. Published 4 January 2019
  45. S. Pradhan, B.K. Chakrabarti (2018) Introduction to critical phenomena through the fiber bundle model of fractureEuropean Journal of Physics, volume 40, number 1, published 30 November 2018. https://doi.org/10.1088/1361-6404/aaeb53

2018

  1. V.M. Barragàn, K. R. Kristiansen, S. Kjelstrup (2018) Perspectives on thermoelectric energy conversion in Ion-exchange membranes. Entropy 2018, 20(12), 90005. Published 26 November 2018.  https://doi.org/10.3390/e20120905
  2. H.S. Bertelsen, B.D. Roger, O. Galland, G. Dumazer, A.A. Benanni (2018) Laboratory modeling of Coeval Brittle and Ductile Deformation During Magma Emplacement into Viscoelastic RocksFrontiers in Earth Science. 15 November 2018. 6:199. doi: 10.3389/feart.2018.0019
  3. A.Cochard, O. Lengline, K.J. Måløy, R. Toussaint (2018). Thermally activated cracks fronts propagating in pinning disorder: simultaneous brittle/creep behavior depending on scale. Phil. Trans. R. Soc. A10170399, http://dx.doi.org/10.1098/rsta.2017.0399
  4. S.Santucci, K.T. Tallakstad, L. Angheluta, L. Laurson, R. Toussaint, K.J. Måløy (2018) Avalanches and extreme value statistics in interfacial crackling dynamics. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 2018. Volum 377 (2136 p 1-15 Phil. http://dx.org/10.1098/rsta.20170394
  5. M.Nishino, P.A. Rikvold, C. Omand and S. Miyashita (2018). Multistability in an unusual phase diagram induced by the competition between antiferromagnetic-like short-range and ferromagnetic-like long-range interactions. Physical Review B 98, 144402 – Published 2 October 2018. DOI: https://doi.org/10.1103/PhysRevB.98144402
  6. M. Hendrick, S. Pradhan and Alex Hansen (2018). Mesoscopic description of the equal-load-sharing fiber bundle model. Phys. Rev. E – Vol 98, 032117 – Published 12 September 2018. DOI: https://doi.org/10.1103/PhysRevE.98.032117
  7. S. Kandhasamy, A. Solheim, S. Kjelstrup, and G. M. Haarberg (2018). Electrolyte Melt Compositions for Low Temperature Molten Carbonate ThermocellACS Appl. Energy Mater. DOI: 10.1021/acsaem.8b00984 • Publication Date (Web): 10 Sep 2018
  8. R. Toussaint, E. Aharonov, D. Koehn, J.-P. Gratier, M. Ebner, P. Baud, A. Rolland and F. Renard (2018). Stylolites: A review. Journal of Structural Geology. Volume 114, September 2018, Pages 163-195. https://doi.org/10.1016/j.jsg.2018.05.003
  9. A. L. Turquet, R. Toussaint, F. K. Eriksen, G. Daniel, D. Koehn and E. G. Flekkøy (2018). Microseismic Emissions During Pneumatic Fracturing: A Numerical Model to Explain the Expreiments. 16 July 2018. Journal of Geophysical Research: Solid Earth 2018 – Volum 1233333(8) p 6922-6939 . Doi: https://doi.org/10.1029/2017JB014613
  10. R. Rurali, X. Cartoixà, D. Bedeaux, S. Kjelstrup and L. Colombo (2018). The Thermal Boundary Resistance at Semiconductor Interfaces: A Critical Appraisal of the Onsager vs Kapitza Formalisms. First published: 14 August 2018. Doi: 10.1039/C8CP02104J. Phys. Chem. Chem. Phys. Volum 20(35) p 22623-22628
  11. E.G. Flekkøy, M. Moura and K.J.  Måløy (2018) Mechanisms of the Flying Chain Fountain. 14 August 2018. Front. Phys. 6:84. doi: 10.3389/fphy.2018.00084
  12. Y. Murase and P. A. Rikvold (2018). Conservation of population size is required for self-organized criticality in evolution models. DOI: 10.1088/1367-2630/aad861. arXiv.org > q-bio > arXiv:1808.03488
    New. J. Phys. 20, 083023 (2018) (9 pages). Submitted on 10 Aug 2018
  13. D. Bedeaux and S. Kjelstrup (2018). Hill’s nano-thermodynamics is equivalent with Gibbs’ thermodynamics for surfaces of constant curvatures. Available online 20 July 2018. Chemical Physics Letters. Volume 707, (2018). Doi: https://doi.org/10.1016/j.cplett.2018.07.031
  14. E. Magnanelli, O. T. Berglihn and S. Kjelstrup (2018). Exergy‐based performance indicators for industrial practice.  First published: 05 July 2018. Internationl Journal of Energy Research 2018. Volume 42 (13) p 3989-4007 https://doi.org/10.1002/er.4123. Wiley Online Library
  15. S. Pradhan, A. Hansen and P. Ray (2018). A Renormalization Group Procedure for Fiber Bundle Models.  Front. Phys., 02 July 2018. Volume 6 p 1-10 – Doi: https://doi.org/10.3389/fphy.2018.00065
  16. R.C. Aadland, C.J. Dziuba, E.B. Heggset, K. Syverud, O. Torsæter, T. Holt, I.D. Gates and S.L. Bryant (2018). Identification of Nanocellulose Retention Characteristics in Porous MediaNanomaterials (Basel). 2018 Jul 19;8(7). pii: E547. doi: 10.3390/nano8070547.
  17. C. Clément, R. Toussaint, M. Stojanova and E. Aharonov (2018). Sinking during earthquakes: critical acceleration criteria control drained soil liquefaction. June 25, 2018. Physical Review E 97 (2), 022905. https://arxiv.org/pdf/1802.08528
  18. M. Farin , A. Mangeney, J. de Rosny, R. Toussaint and P.-T. Trinh (2018). Link Between the Dynamics of Granular Flows and the Generated Seismic Signal: Insights From Laboratory ExperimentsJournal of Geophysical Research: Earth Surface. Published online 21 JUN 2018. 123, 1407 – 1429. https://doi.org/10.1029/2017JF004296
  19. E. MagnanelliØ. WilhelmsenE. Johannessen and S. Kjelstrup (2018) Energy efficient design of membrane processes by use of entropy production minimization. Available online 15 June 2018. Computers & Chemical Engineering, Volume 117, 2 September 2018, Pages 105-116. https://doi.org/10.1016/j.compchemeng.2018.06.00
  20. A. Mikkelsen, K. Khobaib, F.K. Eriksen, K.J. Måløy and Z. Rozynek(2018). Particle-covered drops in electric fields: drop deformation and surface particle organization. First published on 14 Jun 2018. Soft Matter, Volume 14 (26) p 5442-5451 – DOI:10.1039/c8sm00915e (2018)
  21. M. A. Gjennestad, M. Vassvik, S. Kjelstrup and A. Hansen (2018). Stable and efficient time integration of a dynamic pore network model for two-phase flow in porous media  (2018). 13 June 2018. Frontiers in Physics. vol. 6. Doi:https://doi.org/10.3389/fphy.2018.00056
  22. A. Hansen, S. Sinha, D. Bedeaux, S. Kjelstrup, M. Aa. Gjennestad and M. Vassvik (2017). Relations between Seepage Velocities in Immiscible, Incompressible Two-Phase Flow in Porous Media. Submitted on 19 Dec 2017. Transport in Porous media 2018; Volum 125(3) – NTNU
  23. S. Kjelstrup, D. Bedeaux, A. Hansen, B. Hafskjold and O. Galteland (2018). Non-isothermal transport of multi-phase fluids in porous media. The entropy production. Submitted on 10 May 2018. Frontiers in Physics 2018; Volume 6. p 1-14. DOI: 10.3389/fphy.2018.00126 
  24. S. Song, N. Healy, S. K. Svendsen, U. L. Österberg, A. V. Cuervo Covian, J. Liu, A. C. Peacock, J. Ballato, F. Laurell, M. Fokine, and U. J. Gibson (2018). Crystalline GaSb-core optical fibers with room-temperature photoluminescence. Published: 3 May 2018. Optical Materials Express, Vol. 8, Issue 6, pp. 1435-1440 (2018). https://doi.org/10.1364/OME.8.001435
  25. M.A. Gjennestad, E. Aursand, E. Magnanelli and J.G. Pharoah (2018) Performance analysis of heat and energy recovery ventilators using exergy analysis and nonequilibrium thermodynamics. Available online 17 April 2018. Energy and Buildings. vol. 170. Doi: https://doi.org/10.1016/j.enbuild.2018.04.013.
  26. L. Xu, B. Marks, R. Toussaint, E.G. Flekkøy and K.J. Måløy (2018) Dispersion in Fractures With Ramified Dissolution Patterns. 16 April 2018. Front. Phys. 6:29. doi: 10.3389/fphy.2018.00029
  27. D. Bedeaux and S. Kjelstrup (2018). Fluid-Fluid Interfaces of Multi-Component Mixtures in Local Equilibrium. Published: 4 April 2018. Entropy 2018, 20 (4), 250; https://doi.org/10.3390/e20040250
  28. A. Taheri, O. Torsæter, E. Lindeberg, N. J. Hadia, D. Wessel-Berg (2018). Qualitative and quantitative experimental study of convective mixing process during storage of CO2 in heterogeneous saline aquifers. Available online 19 March 2018. International Journal of Greenhouse Gas Control. Volume 71, April 2018, Pages 212-226
  29. M.S. Valavanides (2018) Review of steady-state two-phase flow in porous media: independent variables, universal energy efficiency map, critical flow conditions, effective characterization of flow and pore networkTransp. in Porous Media 123 (1), pp. 42-99. Online: 12 Mach 2018. https://doi.org/10.1007/S11242-018-1026-1, http://users.uniwa.gr/marval/publ/Valavanides_TiPM_ms918.pdf, open read-only access http://rdcu.be/IU0D
  30. H.H. Khanamiri and O. Torsæter (2018). Fluid Topology in Pore Scale Two‐Phase Flow Imaged by Synchrotron X‐ray MicrotomographyFirst published: 28 February 2018.Water Resources Research. (2018).  https://doi.org/10.1002/2017WR021302
  31. J. T. Kjellstadli, E. Bering, S. Pradhan and A. Hansen (2018). Origin of pseudo-stability in stress-induced damage evolution processes. 9 February 2018. arXiv.org>cond-mat>arKiv:1802.02506
  32. V. Bachelet, A. Mangeney, J. de Rosny, R. Toussaint and M. Farin (2018) Elastic wave generated by granular impact on rough and erodible surfaces. Journal of Applied Physics 123 (4), 044901. https://doi.org/10.1063/1.5012979
  33. F.K. Eriksen, R. Toussaint, A.L. Turquet, K.J. Måløy and E.G. Flekkøy (2018). Pressure evolution and deformation of confined granular media during pneumatic fracturing. Published 18 January 2018. Phys. Rev. E. 97, 012908, (2018)
  34. X. WangZ. Zhang, O. Torsæter and J. He (2018). Atomistic insights into the nanofluid transport through an ultra-confined capillary. First published on 12 Jan 2018. Phys. Chem. Chem. Phys., 2018,20, 4831-4839. DOI: 10.1039/c7cp08140e
  35. J.A. Eriksen, R. Toussaint, K.J. Måløy, E.G. Flekkøy, O. Galland and B. Sandnes(2018). Pattern formation of frictional fingers in a gravitational potential. Published 3 January 2018. Phys. Rev. Fluids 3, 013801, (2018)
  36. J. Kariche, M. Meghraoui, Y. Timoulali, E. Cetin and R. Toussaint (2018) The Al Hoceima earthquake sequence of 1994, 2004 and 2016: Stress transfer and poroelasticity in the Rif and Alboran Sea region. Geophysical Journal International, Volume 212, Issue 1, 1 January 2018, Pages 42–53, https://doi.org/10.1093/gji/ggx385

2017

  1. N. Dawass, P. Krüger, S. K. Schnell, D. Bedeaux, S. Kjelstrup, J. M. Simon and T.J.H. Vlugt (2017). Finite-size effects of Kirkwood–Buff integrals from molecular simulations. Pages 599-612. Published online: 22 Dec 2017. https://doi.org/10.1080/08927022.2017.1416114
  2. S.B. Zeev, L. Goren, S. Parez, R. Toussaint, C. Clement and E. Aharonov (2018). The Combined Effect of Buoyancy and Excess Pore Pressure in Facilitating Soil Liquefaction. Poromechanics VI, 107-116, 2017. 27 November 2017. DOI: 10.1061/9780784480779.013
  3. A. Taheri, E. Lindeberg, O. Torsæter, D. Wessel-Berg (2017) Qualitative and quantitative experimental study of convective mixing process during storage of CO2 in homogeneous saline aquifers. Online 16 October 2017. International Journal of Greenhouse Gas Control 2017 – Volum 66 s. 159-176. NTNU SINTEF
  4. M. Moura, K.J. Måløy, E.G. Flekkøy and R. Toussaint (2017). Verification of a dynamic scaling for pair correlation function during the slow drainage of a porous medium. Published 11 October 2017. Phys. Rev. Lett. 119, 154503 (2017)
  5. B. Fang, F. Ning, P. Cao, L. Peng, J. Wu, Z. Zhang, T. J. H. Vlugt and S. Kjelstrup (2017). Modeling Thermodynamic Properties of Propane or Tetrahydrofuran Mixed with Carbon Dioxide or Methane in Structure-II Clathrate HydratesJ. Phys. Chem. C, 2017, 121 (43), pp 23911 23925. doi: 10.1021/acs.jpcc.7b06623. Publication Date (Web): October 5, 2017
  6. F. RichterP. J.S. Vie, S. Kjelstrup and O. S. Burheim (2017). Measurements of ageing and thermal conductivity in a secondary NMC-hard carbon Li-ion battery and the impact on internal temperature profiles. Electrochimica Acta. Volume 250, 1 October 2017, Pages 228-237. https://doi.org/10.1016/j.electacta.2017.07.173
  7. F. Richter, A. Gunnarshaug, O. S, Burheim, P. J. S. Vie and S. Kjelstrup (2017). Single Electrode Entropy Change for LiCoO2 Electrodes. doi: 10.1149/08010.0219ecst. ECS Trans. 2017 volume 80,issue 10, 219-238
  8. G. L. Vasconcelos, M. Moura (2017) Vortex motion around a circular cylinder above a plane. Published online 1 august 2017 – Physics of Fluids 2017; volume 29(8) – UiO
  9. S. Sinha, A.T. Bender, M. Danczyk, K. Keepseagle, C.A. Prather, J.M. Bray, L.W. Thrane, J.D. Seymour, S.L. Codd and A. Hansen (2018). Effective Rheology of Two-Phase Flow in Three-Dimensional Porous Media: Experiment and Simulation. First Online: Transport in Porous Media, Volume 119, Issue 1, pp 77–94.
  10. F. K. Eriksen, R. Toussaint, A. L. Turquet, K.J. Måløy and E.G. Flekkøy (2017). Pneumatic fractures in confined granular media. Published 12 June 2017. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics.  ISSN 1063-651X. . doi: 10.1103/PhysRevE.95.062901
  11. M. Barragan and S. Kjelstrup (2017). Thermo-osmosis in Membrane Systems: A reviewNon-Equilib. Thermodyn (June 2017). doi: 10.1515/jnet-016-0088
  12. E.G. Flekkøy, S.R. Pride and R. Toussaint (2017). Onsager symmetry from mesoscopic time reversibility and the hydrodynamic dispersion tensor for coarse-grained systems. Published 24 February 2017. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics.  ISSN 1063-651X.  95(2) . doi:10.1103/PhysRevE.95.022136
  13. M. Moura, K.J. Måløy and R. Toussaint (2016). Critical behavior in porous media flow. 15 November 2016. Europhysics letters.  ISSN 0295-5075.  118(1) . doi:10.1209/0295-5075/118/14004

Selected articles before center launch:

  1. I. Savani, D. Bedeaux, S. Kjelstrup, M. Vassvik, A. Hansen and S. Sinha (2017). Ensemble Distribution for Immiscible Two-Phase Flow in Two-Dimensional Networks,  Physical review E 02/2017; 95(2). doi:10.1103/PhysRevE.95.023116
  2. I. Savani, M.H. Waage, M. Børset, S. Kjelstrup and Ø. Wilhelmsen (2017). Harnessing thermoelectric power from transient heat sources: Waste heat recovery from silicon production. Available online 10 February 2017. Energy Conversion and Management (2017). DOI:10.1016/j.enconman.2017.01.058
  3. M. Rubi, A. Lervik, D. Bedeaux, and S. Kjelstrup (2017). Entropy Facilitated Active TransportJ. Chem. Phys. 146 (January 2017) 185101; doi:10.1063/1.4982799
  4. I. Savani, S. Sinha, A. Hansen, D. Bedeaux, S. Kjelstrup and M. Vassvik (2017). A Monte Carlo Algorithm for Immiscible Two-Phase Flow in Porous Media. Transport in Porous Media. , Volume 116, Issue 2, pp 869–888. 
  5. S. R. Pride, D.W. Vasco, E.G. Flekkøy and R. Holtzman (2017). Dispersive transport and symmetry of the dispersion tensor in porous media. Published 10 April 2017. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics.  ISSN 1063-651X.  95(4) . doi:10.1103/PhysRevE.95.043103
  6. T. T.TrinhN. Meling, D. Bedeaux, S. Kjelstrup (2017). Thermodynamic properties of hydrogen dissociation reaction from the small system method and reactive force field ReaxFF. Chemical Physics Letters. Volume 672, 16 March 2017, Pages 128-132. DOI: https://doi.org/10.1016/j.cplett.2017.01.058
  7. B. A. Strøm, J.-M. Simon, S. K. Schnell, S. Kjelstrup, J. He and  D. Bedeaux (2017). Size and shape effects on the thermodynamic properties of nanoscale volumes of water. First published on 07 Mar 2017. Phys. Chem. Chem. Phys., 2017,19, 9016-9027. DOI: 10.1039/C7CP00874K
  8. J.-C. de HemptinneJ.-H. Ferrasse, A. Gorak, S. Kjelstrup, F. Maréchal, O. Baudouin and R. Gani (2017). Energy efficiency as an example of cross-discipline collaboration in chemical engineeringChemical Engineering Research and Design. Volume 119, March 2017, Pages 183-187. https://doi.org/10.1016/j.cherd.2017.01.020
  9. E. Magnanelli, E. Johannessen and S. Kjelstrup (2017). Entropy Production Minimization as Design Principle for Membrane Systems: Comparing Equipartition Results to Numerical OptimaInd. Eng. Chem. Res., 2017, 56 (16), pp 4856–4866. doi10.1021/acs.iecr.7b00493. Publication Date (Web): April 12, 2017
  10. B. Ghanbarian and C. F. Berg (2017). Formation factor in Bentheimer and Fontainebleau sandstones: Theory compared with pore-scale numerical simulationsAdvances in Water Resources. Volume 107, September 2017, Pages 139-146. Available online 19 June 2017. 
  11. M. H. Waage, T. J. H. Vlugt and S. Kjelstrup (2017). Phase Diagram of Methane and Carbon Dioxide Hydrates Computed by Monte Carlo SimulationsPhys. Chem. B, 2017, 121 (30), pp 7336–7350. DOI10.1021/acs.jpcb.7b03071. Publication Date (Web): July 6, 2017
  12. C. F. Berg, O. Lopez and H. Berland (2017). Industrial applications of digital rock technologyJournal of Petroleum Science and Engineering. Available online 11 July 2017. Volume 157, August 2017, Pages 131-147. https://doi.org/10.1016/j.petrol.2017.06.074
  13. B. Marks, J.A. Eriksen, G. Dumazer, B. Sandnes and K.J. Måløy (2017). Size segregation of intruders in perpetual granular avalanches. Published online: 21 July 2017. J. Fluid Mech. 825, 550, (2017)
  14. D. L. Roest, P. Ballone, D. Bedeaux and S. Kjelstrup (2017). Molecular Dynamics Simulations of Metal/Molten Alkali Carbonate Interfaces. Published online 24 July 2017. J. Phys. Chem. C. (2017) DOI: 10.1021/acs.jpcc.7b02842
  15. F. Richter, S. Kjelstrup, P. J.S. Vie and O. S.Burheim (2017). Thermal conductivity and internal temperature profiles of Li-ion secondary batteriesJournal of Power Sources. Volume 359, 15 August 2017, Pages 592-600
  16. G. Dumazer, B. Sandnes, M. Ayaz, K.J. Måløy and E.G. Flekkøy (2016). Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow, Phys. Rev. Lett., 117, 028002 (2016). doi:10.1103/PhysRevLett.117.028002
  17. R. Rurali, L. Colombo, X. Cartoixa, Ø. Wilhelmsen, T. T. Trinh, D. Bedeaux and S. Kjelstrup (2016). Heat transport through a solid-solid junction: the interface as an autonomous thermodynamic system, Chem. Chem. Phys. (2016). doi:10.1039/C6CP01872F
  18. E. Magnanelli, Ø. Wilhelmsen, M. Acquarone, L. P. Folkow and S. Kjelstrup (2016). The efficiency of a reindeer nose: The Nasal Geometry of the Reindeer Gives Energy-Efficient Respiration, Non-Eq. Thermodyn42 (2016) 59-78 doi: 10.1515/jnet-2016-0038
  19. Ø. Wilhelmsen, T. T. Trinh, A. Lervik, V. K. Badam, S. Kjelstrup and D. Bedeaux (2016). Coherent description of transport across the water interface: From nanodroplets to climate modelsRev. E 93 002800 (2016). doi:10.1103/PhysRevE.93.032801
  20. L. Keulen, L.V. van der Ham, J. Haanemaijer, N.J.M. Kuipers, T. Vlugt and S. Kjelstrup (2016). Membrane distillation against a pressure differenceMembr. November 2016 · Journal of Membrane Science 11/2016; 524:151-162. doi:10.1016/j.memsci.2016.10.054
  21. M. Niebling, R. Toussaint, E.G. Flekkøy and K.J. Måløy (2015). Dynamic aerofracture or hydrofracture of dense granular packing: pressure and viscosity control of the fracture patterns. Phys. Rev. E 86 (2015)
  22. J.A. Eriksen and E.G. Flekkøy Numerical approach to frictional fingers, Phys. Rev. E 92 (2015)
  23. M. Moura, E. -A. Fiorentino, K.J. Måløy, G. Schafer R. and Toussaint (2015). Impact of sample geometry on the measurement of pressure-saturation curves: experiments and simulations. Water Resour. Res., 51, doi:10.1002/ 2015WR017196 (2015).
  24. H. H. Khanamiri, O. Torsæter and J.Å. Stensen (2016). Effect of calcium in pore scale oil trapping by low-salinity water and surfactant enhanced oil recovery at strongly water-wet conditions: in situ imaging by X-ray microtomography. Energy & Fuels 2016;Volume 30.(10) s. 8114-8124. doi10.1021/acs.energyfuels.6b01236
  25. S. Li, M. Genys, W. Kun and O. Torsæter (2015). Experimental Study of Wettability Alteration during Nanofluid Enhanced Oil Recovery Process and Its Effect on Oil Recovery. SPE Reservoir Characterization and Simulation Conference and Exhibition; 2015-09-14 – 2015-09-16. https://doi.org/10.2118/175610-MS
  26. K. J. Zlotorowicz, P.I. Dahl, M. S. Thomassen and S. Kjelstrup (2015). Tailored Porosities of the Cathode Layer for Improved Polymer Electrolyte Fuel Cells, J. Power Sources, 287 (2015) 472-477. DOI:10.1016/j.jpowsour.2015.04.079
  27. L. Hendraningrat and O. Torsæter (2014). “Effects of the initial rock wettability on silica-based nanofluid-enhanced oil recovery processes at reservoir temperatures”. Energy & Fuels, 2014; Volume 28.(10) s. 6228-6241. doi: 10.1021/ef5014049
  28. M. Erpelding, S. Sinha, K.T. Tallakstad, A. Hansen, E.G. Flekkøy, and K.J. Måløy, History-independence of steady state in simultaneous two-phase flow through 2D porous media, Phys Rev. E. 88, 053004 (2013). doi: 10.1103
  29. L. Laurson, X. Illa, S. Santucci, K.T. Tallakstad, K.J. Måløy, and M. Allava (2013). The average avalanche shape: universality beyond the mean field. Nat. Commun. 4:2927 doi: 10.1038/ncomms3927 (2013)
  30. K.T. Tallakstad, R. Toussaint, S. Santucci and K.J. Måløy (2013). Non-Gaussian Nature of Fracture and Survival of Fat-Tail Exponenets, Phys. Rev. Lett, 110, 145501 (2013). doi:10.1103
  31. R. Farokhpoor, B.J.A. Bjørkvik, E.G.B. Lindeberg, O. Torsæter (2013). “Wettability behavior of CO2 at storage conditions”. International Journal of Greenhouse Gas Control 2013; Volume 12. s.18-25. doi: https://doi.org/10.1016/j.ijggc.2012.11.003
  32. M.S. Afrapoli, S. Alipour, O. Torsæter (2012). “Analysis of Microscopic Displacement Mechanisms of a MIOR Process in Porous Media with Different Wettability”. Transport in Porous Media 2012 ;Volume 93.(3) s. 705-719. doi: https://doi.org/10.1007/s11242-012-9978-z
  33. B. Sandnes, E.G. Flekkøy, H.A. Knudsen, K.J. Måløy and H. See (2011). Patterns and flow in frictional fluid dynamics, Nature Comm. 2 doi:10.1038/ncomms1289 (2011)
  34. O. Aursjø, H.A. Knudsen, E.G. Flekkøy and K.J. Måløy (2010). Oscillation induced displacement pattern in a two-dimensional porous medium: A lattice Boltzmann study, Phys. Rev. E. 82, 026305, (2010). doi:10.1103
  35. S. Kjelstrup, M.-O. Coppens, J. G. Pharoah and P. Pfeifer (2010). Nature-Inspired Energy- and Material-Efficient Design of a Polymer Electrolyte Membrane Fuel CellEnergy & Fuels, 24 (2010) 5097-5108. DOI:10.1021/ef100610w
  36. K.T. Tallakstad, G. Løvoll, H. A. Knudsen, T. Ramstad, E.G. Flekkøy and K.J. Måløy (2009). Steady-state simultaneous two-phase flow in porous media: An experimental study, Phys. Rev. E. 80, 036308 (2009).
  37. K.T. Tallakstad, H. A. Knnudsen, T. Ramstad, G. Løvoll, K. J. Måløy, R. Toussaint and E. G. Flekkøy (2009). Steady-State Two-Phase Flow in Porous Media: Statistics and Transport Properties. Phys. Rev. Lett. 102, 074502, (2009). doi:https://doi.org/10.1103
  38. J. L. Vinningland, Ø. Johnsen, E.G. Flekkøy, R. Toussaint and K.J. Måløy (2007). Granular Rayleigh- Taylor instability: experiment and simulation, Phys. Rev. Lett. 99 048001 (2007). doi:10.1103
  39. E. Kowalewski, I. Rueslåtten, K.H. Steen, G. Bodtker, O. Torsæter (2006). Microbial improved oil recovery-bacterial induced wettability and interfacial tension effects on oil production, Journal of Petroleum Science and Engineering , 52 (2006) 275-286. doi:https://doi.org/10.1016/j.petrol.2006.03.011
  40. R. Toussaint, G. Løvoll, Y. Meheust, K. J. Måløy and J. Schmittbuhl (2005). Influence of pore-scale disorder on viscous fingering during drainage. Europhys Lett. 71, 583, (2005). doi: 10.1209/epl/i2005-10136-9
  41. G. Løvoll, Y. Meheust, R. Toussaint, J. Schmittbuhl and K. J. Måløy (2004). Growth activity during fingering in a porous Hele-Shaw cell. Phys. Rev. E 70, 026301 (2004)
  42. E. Kowalewski, T. Holt and O. Torsæter (2002). Wettability alterations due to an oil soluble additive, Journal of Petroleum Science and Engineering 33 (2002), 19-28. doi:https://doi.org/10.1016/S0920-4105(01)00172-3
  43. Y. Meheust, G. Løvoll, K. J. Måløy and J. Schmittbuhl (2002). Gravity stabilized viscous fingering. Phys. Rev. E. 66, 051603 (2002)
  44. K. J. Måløy, L. Furuberg, J. Feder and T. Jøssang (1992). Dynamics of Slow Drainage in Porous Media. Phys. Rev. Lett. 68, 2161-2164, (1992)
  45. K. J. Måløy, J. Feder and T. Jøssang (1985). Viscous Fingering Fractals in Porous Media. Phys. Rev. Lett. 55, 2688-2691, (1985). doi: 10.1103/PhysRevLett.55.2688
Scroll Up