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Aerodynamic coefficients computed for a generic sharp-edged re-entry configuration

Hepp, Christian and Grabe, Martin and Hannemann, Klaus (2017) Aerodynamic coefficients computed for a generic sharp-edged re-entry configuration. Clean Space Industrial Days & AeroThermoDynamics Design for Demise Workshop, 26. Okt. 2017, Noordwijk, Niederlande.

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Abstract

Aerodynamic coefficients – drag, lift and pitching moment – for a generic sharp-edged re-entry configuration (test case „ESA_ATD3WD2017_SHARP“) were computed at DLR Göttingen, using three numerical methods of different modeling depth. The Direct Simulation Monte-Carlo (DSMC) method is the physically most accurate but numerically most expensive scheme. High spatial resolution of intermolecular collisions is achieved via a near-neighbor collision partner selection scheme and grid cells refined to a characteristic dimension smaller than the local mean free path. We make use of the SPARTA implementation developed at Sandia National Laboratories in this work. A recently suggested method based on the Fokker-Planck approximation of the Boltzmann equation was implemented into the SPARTA framework and yields results similar to those obtained by DSMC, albeit with less computational effort. For comparison, the inviscid-flow limit is explored by employing the DLR TAU code to solve the Euler equations.

Item URL in elib:https://elib.dlr.de/116215/
Document Type:Conference or Workshop Item (Speech)
Title:Aerodynamic coefficients computed for a generic sharp-edged re-entry configuration
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:2017
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:rarefied flow, reentry, aerodynamics
Event Title:Clean Space Industrial Days & AeroThermoDynamics Design for Demise Workshop
Event Location:Noordwijk, Niederlande
Event Type:Workshop
Event Dates:26. Okt. 2017
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: Bachmann, Barbara
Deposited On:07 Dec 2017 15:31
Last Modified:07 Dec 2017 15:31

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