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Comparison of Decoupled Hybrid Navier-Stokes - DSMC Calculations with Experiments in Plumes

Rosenhauer, M. and Plähn, K. and Hannemann, K. (1999) Comparison of Decoupled Hybrid Navier-Stokes - DSMC Calculations with Experiments in Plumes. In: Rarefied Gas Dynamics, Proceedings of the 21st International Symposium on Rarefied Gas Dynamics, Vol.1, pp. 671-678. Cépaduès-Éditions, Toulouse. 21st International Symposium on Rarefied Gas Dynamics, Marseille/Frankreich, 26.-31. Juli 1998.

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Abstract

Hybrid computation methods coupling Navier-Stokes solvers for continuum and DSMC methods for rarefied flow have gained much interest to treat flow conditions where strong nonequilibrium and large expansion ratios occur in hypersonic flow, e.g. in shocks, blunt body wakes and around nozzle lips [1, 2]. The present paper concerns, as a first step from the effort to build and validate such a program, decoupled Navier-Stokes-DSMC calculations of a nozzle flow. This case gains interest from the opportunity of comparing it to corresponding experiments from the new DLR High Vacuum Facility STG. By powerful cryopumps, STG allows reliable measurements in nozzle flow regions formerly not accessible due to background pressure disturbances, such delivering data urgently needed to check computational models over the whole range of flow conditions. Especially hybrid methods with their sensitive parameters controlling switching and DSMC details rely on such possibility for validation.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Comparison of Decoupled Hybrid Navier-Stokes - DSMC Calculations with Experiments in Plumes
Authors:
AuthorsInstitution or Email of Authors
Rosenhauer, M.UNSPECIFIED
Plähn, K.UNSPECIFIED
Hannemann, K.UNSPECIFIED
Date:1999
Journal or Publication Title:Rarefied Gas Dynamics, Proceedings of the 21st International Symposium on Rarefied Gas Dynamics
Volume:Vol.1
Page Range:pp. 671-678
Publisher:Cépaduès-Éditions, Toulouse
Status:Published
Keywords:direct simulation Monte Carlo, Navier-Stokes, hybrid calculation nozzle flow, plume
Event Title:21st International Symposium on Rarefied Gas Dynamics, Marseille/Frankreich, 26.-31. Juli 1998
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):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 20:28

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