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Numerical Simulation of Nozzle Flow into High Vacuum Using Kinetic and Continuum Approaches

Grabe, Martin and Fasoulas, Stefanos and Hannemann, Klaus (2008) Numerical Simulation of Nozzle Flow into High Vacuum Using Kinetic and Continuum Approaches. STAB 2008 (16. DGLR-Fach-Symposium), 2008-11-03 - 2008-11-04, Aachen (Germany). (Submitted)

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Abstract

Laminar nitrogen flow expanding through a conical nozzle into high vacuum is to be numerically reproduced and compared to available experimental data. As the gas density varies quickly by several orders of magnitude, leading to high rarefaction and thermal non-equilibrium, standard (continuum) CFD tools are not sufficient to accurately model the expanding flow. In the work presented here, the efficiency of Navier-Stokes solvers is to be exploited where applicable, supplying the boundary conditions for a kinetic Direct Simulation Monte Carlo (DSMC) solver to handle the domain of rarefaction and non-equilibrium. The hypersonic character of the flow suggests to attempt a pure downstream coupling. The validity of this approach is to be verified.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Numerical Simulation of Nozzle Flow into High Vacuum Using Kinetic and Continuum Approaches
Authors:
AuthorsInstitution or Email of Authors
Grabe, MartinUNSPECIFIED
Fasoulas, StefanosTU Dresden
Hannemann, KlausUNSPECIFIED
Date:31 October 2008
Status:Submitted
Keywords:DSMC, rarefied, plume expansion
Event Title:STAB 2008 (16. DGLR-Fach-Symposium)
Event Location:Aachen (Germany)
Event Type:international Conference
Event Dates:2008-11-03 - 2008-11-04
Organizer:RWTH Aachen
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Grundlagen Raumtransport - numerische Verfahren (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Martin Grabe
Deposited On:08 Jan 2009
Last Modified:12 Dec 2013 20:33

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