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On June 25th, Professor Majid Hassanizadeh, Managing Director at InterPore and Professor of Hydrogeology at Utrecht University, will give a talk on “Capillarity in porous media at different scales”

Abstract:

In this lecture, current definitions of capillary pressure, which are mostly empirical in nature are revisited and it is shown that they are special cases of a more general theory of capillarity. In particular, capillary pressure is defined at pore scale based on equations of momentum conservation for interfaces. It is shown that in general, capillary pressure is equal to the difference in pressures of the two fluids only under static conditions. For dynamic conditions, a non-equilibrium capillarity equation is derived. Based on results of experimental studies, it is shown the current working assumption that capillary pressure is a function of saturation is grossly deficient. In this regard, the role of fluid-fluid interfaces in the characterization of capillarity is elucidated. Computational and experimental studies are presented that highlight the value of new generalized capillarity theory.

Alex on NRK radio

Read more here.

Eirik Flekkøy on the famous TV program "Brille"

Professor Eirik Grude Flekkøy was invited on April 23rd, 2019, to participate to the famous Norwegian TV program, “Brille”, on TV Norge. Eirik explains the mechanism of the flying chain fountain phenomenon as well as 2 other physical phenomena. Read more here.

Gemini article: Grunnforskning kan gi bedre varsel før ras

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

Cover story for Entropy

The paper from Mariá Barragán, Kim Kristiansen and Signe Kjelstrup entitled "Perspectives on Thermoelectric Energy Conversion in Ion-Exchange Membranes" was selected as the cover story for ENTROPY Volume 20. Read the paper here

Mechanisms of the Flying Chain Fountain

When a chain is released by one end from a container, it forms a striking arch extending well above the container. Watch the video of this curious phenomenon here and read more about the physics behind it here

50th Anniversary of the Nobel Prize to Lars Onsager

On Thursday 22 November, an exhibition on Lars Onsager opened at the Natural Science Library. It is now 50 years since he was awarded the Nobel Prize in Chemistry.

Plan S: På høy tid at dette skjer

Professor og leder for SFF ’en Porelab, Alex Hansen, gir Plan S sin fulle tilslutning. Forslaget om at all offentlig finansiert forskning skal publiseres i tidsskrifter med åpen tilgang er eneste riktige, slår han fast.

The Sound of Science