8 papers · 1 filter
Two-phase flow in porous media: dynamical phase transition
Henning Arendt Knudsen, Alex Hansen
Two-phase flow systems in porous media have complex dynamics. It is well established that a wide range of system parameters like viscosities and porosity as well as flow parameters…
Generic differential equation for fractional flow of steady two-phase flow in porous media
Henning Arendt Knudsen, Alex Hansen
We report on generic relations between fractional flow and pressure in steady two-phase flow in porous media. The main result is a differential equation for fractional flow as a fu…
Elastic Response of Rough Surfaces in Partial Contact
G. George Batrouni, Alex Hansen, Jean Schmittbuhl
We model numerically the partial normal contact of two elastic rough surfaces with highly correlated asperities. Facing surfaces are unmated and described as self-affine with a Hur…
Bulk Flow Regimes and Fractional Flow in 2D Porous Media by Numerical Simulations
Henning Arendt Knudsen, Eyvind Aker, Alex Hansen
We investigate a two-dimensional network simulator that model the dynamics of two-phase immiscible bulk flow where film flow can be neglected. We present a method for simulating th…
Thermodynamical implications of a protein model with water interactions
Audun Bakk, Johan S. Hoye, Alex Hansen +1
We refine a protein model that reproduces fundamental aspects of protein thermodynamics. The model exhibits two transitions, hot and cold unfolding. The number of relevant paramete…
Parametrization of Multiple Pathways in Proteins: Fast Folding versus Tight Transitions
Paul G. Dommersnes, Alex Hansen, Mogens H. Jensen +1
Growing experimental evidence shows that proteins follow one or a few distinct paths when folding. We propose in this paper a procedure to parametrize these observed pathways, and…