Alex Hansen
Professor
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About
Dr. Alex Hansen is a Professor at the Norwegian University of Science and Technology (NTNU), located in Norway. His research interests encompass percolation theory, two-phase flow in porous media, and the dynamics of microswimmers. Recent publications include investigations into mixed-wet percolation, spanning clusters in three-dimensional percolation, and the effects of viscosity and pressure gradients on incompressible fluid flow.
Articles (10)
Hyper-Ballistic Superdiffusion of Competing Microswimmers
Hyper-ballistic diffusion is shown to arise from a simple model of microswimmers moving through a porous media while competing for resources. By using a mean-field model where swimmers interact through the local concentration, we show that a non-linear Fokker–Planck equation arises. The solution exhibits hyper-ballistic superdiffusive motion, with a diffusion exponent of four. A microscopic simulation strategy is proposed, which shows excellent agreement with theoretical analysis.
Year:
2024
Collaborators (5)
Eirik Grude Flekkøy
University of Oslo
Vincenzo Maria Schimmenti
Max Planck Institute for the Physics of Complex Systems
Kristian Stølevik Olsen
Heinrich Heine University Düsseldorf
Yves Méheust
Université de Rennes 1
Alberto Rosso
University of Paris-Sud
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