Lithium ion batteries are used to store and produce electric energy. During the charging- and discharging processes, net heat is released or adsorbed in the battery. Temperature is one of the most important factors for battery ageing. In this study we are seeking a fundamental understanding of one of the heat effects, the reversible heat
PhD candidate Magnus Aa. Gjennestad (PoreLab/NTNU) and Senior Researcher/Professor Øivind Wilhelmsen (SINTEF/PoreLab/NTNU) recently published the paper “Thermodynamic stability of droplets, bubbles and thick films in open and closed pores” in Fluid Phase Equilibria. In this work, a thermodynamic description was developed to study the stability of droplets, bubbles and films of water in a pore. For a particular set of conditions,
Do you remember the YouTube video from Marcel and the relevant publications on the flying chain? Well, the flying chain strikes again! The group has produced a new theoretical model for explaining the phenomenon that included the effects of fluctuations along the chain length. This model, backed up by experiments and numerical simulations, successfully predicted
Per Arne Slotte, Carl Fredrik Berg and Hamid Hosseinzade Khanamiri released their last publication in “Transport in Porous Media”. volume 130, no.3, December 2019. Read the article here: https://link.springer.com/article/10.1007/s11242-019-01363-2 Abstract: Predicting Resistivity and Permeability of Porous Media Using Minkowski Functionals | SpringerLink Permeability and formation factor are important properties of a porous medium that only depend on
Thin liquid films and capillary bridges can effectively enhance the connectivity of a porous medium, making it possible for the drainage of apparently trapped liquid clusters. This drainage due to film flow was recently characterized in a paper published in Phys. Rev. Fluids by PoreLab researcher Marcel Moura and collaborators. The experimental work has shown
A 2D array of disks under stress replicates several statistical features of seismic phenomena. This is an interesting reading 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 mimic earthquakes. This article is published in PRL, featured in Focus on
The paper from A. Hansen, S. Sinha, D. Bedeaux, S. Kjelstrup. M. Aa. Gjennestad and M. Vassvik: “Relations between seepage velocities in immiscible, incompressible two-phase flow in porous media” (2018) has become the most downloaded paper ever in Transport in Porous Media, the main journal in porous media research, starting in 1986. We demonstrate in
Alex speaks about Open Science at Frontiers. Watch him here: https://www.youtube.com/watch?v=TkScXGTOOOM&t=29s The Frontiers Forum brings together 400+ top global scientists and other thought leaders. It provides a valuable opportunity for the Frontiers community to see and discuss the latest in Open Science – and the Science Unlimited event showcases inspiring developments powering our world of
Olav Galteland, Dick Bedeaux, Signe Kjelstrup, Bjørn Hafskjold and Alex Hansen explain how the activities at PoreLab could help with the prediction of mudslides. Read the article (in Norwegian) here
The paper of María Barragán, Kim Kristiansen and Signe Kjelstrup entitled “Perspectives on Thermoelectric Energy Conversion in Ion-Exchange Membranes” was selected by the editors as the cover of Entropy, Volume 20. Congratulations! Abstract: By thermoelectric power generation we mean the creation of electrical power directly from a temperature gradient. Semiconductors have been mainly used for
