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Modeling of rarefied gas flows with particle methods

Hepp, Christian and Grabe, Martin and Hannemann, Klaus (2019) Modeling of rarefied gas flows with particle methods. Seminar / University of New Mexico - Mechanical Engineering Department, 27. Sept 2019, Albuquerque.

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Abstract

The design of spacecraft requires modeling of a wide range of rarefaction and non-equilibrium flow effects, like e.g. shock waves and strong expansion flows. While the classical Navier-Stokes approach becomes invalid in such flow regimes, particle methods can describe gases even far away from thermal equilibrium. In this talk we present an overview about various particle schemes which can be applied to model rarefied gas flows. The Direct Simulation Monte Carlo (DSMC) method as well as a recent kinetic Fokker-Planck (FP) model are described, and advantages and shortcomings of each method are outlined. Applications for each method are shown, e.g. the aerodynamic characterization of a slender reentry configuration.

Item URL in elib:https://elib.dlr.de/129951/
Document Type:Conference or Workshop Item (Speech)
Title:Modeling of rarefied gas flows with particle methods
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hepp, ChristianChristian.Hepp (at) dlr.deUNSPECIFIED
Grabe, MartinMartin.Grabe (at) dlr.deUNSPECIFIED
Hannemann, KlausKlaus.Hannemann (at) dlr.deUNSPECIFIED
Date:27 September 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Rarefied gas flows, hypersonic, particle methods, DSMC, Fokker-Planck
Event Title:Seminar / University of New Mexico - Mechanical Engineering Department
Event Location:Albuquerque
Event Type:Other
Event Dates:27. Sept 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Wiederverwendbare Raumfahrtsysteme und Antriebstechnologie
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Hepp, Christian
Deposited On:07 Nov 2019 16:49
Last Modified:07 Nov 2019 16:49

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