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Ivar Svalheim Haugerud

Postdoktor - Mekanikk

$Bilde av Ivar Svalheim Haugerud$

E-post ivarsh@math.uio.no

Rom 914

Brukernavn

Besøksadresse Moltke Moes vei 35 Niels Henrik Abels hus 0851 Oslo

Postadresse Postboks 1053 Blindern 0316 Oslo

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Interests

I am a postdoctoral researcher at the Department of Mathematics, University of Oslo. My research lies at the interface of non-equilibrium thermodynamics, soft matter, and chemical physics. In my postdoctoral work, I study the interplay between biomolecular condensates and wetting phenomena, as well as the self-assembly of membrane structures. During my PhD, I investigated how life can emerge from simple chemical systems far from equilibrium, focusing on the origin of emergent, life-like behavior.

Background

2016-2019: Bachelor in Physics, Astronomy and Meteorology. University of Oslo, Norway.

2019-2021: Master in Physics - Condensed matter. University of Oslo, Norway.

2021-2025: PhD in Theoretical Physics. University of Augsburg, Germany.

2026--: Postdoctoral research. Department of Mathematics, University of Oslo, Norway.

Websites

Emneord: non-equilibrium thermodynamics, theoretical biophysics, soft matter, origins of life, Mekanikk

Publikasjoner

Vitenskapelige artikler og bokkapitler

Haugerud, Ivar Svalheim; Linga, Gaute & Flekkøy, Eirik Grude (2022). Solute dispersion in channels with periodic square boundary roughness. Journal of Fluid Mechanics. ISSN 0022-1120. 944. doi: 10.1017/jfm.2022.522. Fulltekst i vitenarkiv Vis sammendrag
Transport of solutes through channels with rough boundaries is abundant in natural and engineered settings. However, it is not known currently what the consequences of an abruptly alternating boundary are for the solute dispersion, in particular when advected by inertial fluid flow. To investigate this, we compute numerically the time-asymptotic longitudinal dispersion coefficient of a passive solute advected by fluid flow through a two-dimensional channel with square boundary roughness. We determine how the effective diffusion coefficient depends on the boundary amplitude, Péclet number and Reynolds number. For creeping flow, the effective diffusion coefficient is found to be enhanced significantly through the recirculation zones. Increasing fluid inertia reduces the effective diffusion coefficient by up to a factor of two for high Péclet numbers. We interpret this behaviour by analysing residence times computed from Lagrangian particle simulations.

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Publisert 20. mars 2026 11:22 - Sist endret 15. apr. 2026 13:49

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Mekanikk