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Extension of the Spalart-Allmaras One-Equation Turbulence Model for Effusion Cooling Problems

Hink, R. and Hannemann, Volker and Eggers, Thino (2013) Extension of the Spalart-Allmaras One-Equation Turbulence Model for Effusion Cooling Problems. Deutscher Luft- und Raumfahrtkongress 2013, 10.-12. Sept. 2013, Stuttgart, Deutschland.

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Abstract

The choice of materials for spacecrafts is limited by their thermal resistance. The thermal loads can be reduced by blowing out gases through a porous surface. The original Spalart-Allmaras and k-ω turbulence model by Wilcox are designed for smooth, non-permeable walls and therefore have to be adjusted to account for the influence of the injected fluid. This study proposes an extension of the Spalart-Allmaras turbulence model for an improved prediction of the velocity profiles in a turbulent boundary layer with effusion cooling. The new approach is implemented in the finite volume based TAU code developed by the German Aerospace Center (DLR). Several simulations with different blowing settings are performed and discussed in comparison to the results of the original model. The enhancement is validated against experimental data from the Thermosciences Division of the Stanford University. Finally, the approach is applied to the SHarp Edge Flight EXperiment (SHEFEX) III vehicle of the DLR.

Item URL in elib:https://elib.dlr.de/84638/
Document Type:Conference or Workshop Item (Speech)
Title:Extension of the Spalart-Allmaras One-Equation Turbulence Model for Effusion Cooling Problems
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hink, R.ruediger.hink (at) dlr.deUNSPECIFIED
Hannemann, Volkervolker.hannemann (at) dlr.deUNSPECIFIED
Eggers, Thinothino.eggers (at) dlr.deUNSPECIFIED
Date:September 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Effusion Cooling, Turbulence Models, Computational Fluid Dynamics
Event Title:Deutscher Luft- und Raumfahrtkongress 2013
Event Location:Stuttgart, Deutschland
Event Type:national Conference
Event Dates:10.-12. Sept. 2013
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.
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 - Shefex III
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Hink, Rüdiger Reiner
Deposited On:16 Oct 2013 09:04
Last Modified:02 Dec 2014 09:22

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