Computational fluid dynamics simulation of dipolar gases in the hydrodynamic regime

  • In a recent theoretical effort, a hydrodynamic model of ultracold, but not yet quantum condensed, dipolar gases has been derived. Within this model, the dipolar scattering results in an anisotropic viscosity tensor. Effects of the anisotropy have been predicted to be observable in the weltering motion, i.e., the collective oscillations of a dipolar Fermi gas, as well as in its acoustic behavior. In this contribution, we approach dipolar fluids from a computational fluid dynamics (CFD) perspective. To this end, previously derived analytic expressions of the anisotropic viscosity tensor are implemented in the finite-element software COMSOL Multiphysics. This allows us to investigate a whole spectrum of fluid flow situations but now including the inherent anisotropy of dipolar scattering. We present first results of such CFD simulations with an emphasis on effects attributable to the special characteristics of the anisotropic viscosity tensor.

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Metadaten
Author:Michael MayleORCiD, Reuben R. W. Wang, John L. Bohn
URN:urn:nbn:de:bvb:92-opus4-45331
URL / DOI:https://www.dpg-verhandlungen.de/year/2025/conference/quantum/part/fri/session/2/contribution/3
Document Type:conference proceeding (article)
Language:English
Date of first Publication:2025/09/12
Publishing Institution:Technische Hochschule Nürnberg Georg Simon Ohm
Reviewed:Begutachtet/Reviewed
Release Date:2026/01/13
Konferenzangabe:Quantum 2025, 2. DPG-Herbsttagung,Göttingen
institutes:Fakultät Angewandte Mathematik, Physik und Allgemeinwissenschaften
Research Themes:Digitalisierung & Künstliche Intelligenz
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