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Experimental and Numerical Study on Transpiration Cooling with Supersonic Flow

Langener, Tobias and von Wolfersdorf, Jens and Cheuret, Francois and Steelant, Johan and Kuhn, Markus (2009) Experimental and Numerical Study on Transpiration Cooling with Supersonic Flow. 19th ISABE Conference, 2009-09-07 - 2009-09-11, Montréal, Kanada. ISBN 9781600867361.

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For the present study the ITLR supersonic combustion experimental facility was used to investigate the transpiration cooling efficiency of C/C materials. The tested sample had a porosity of 16.1% and was exposed to supersonic (M=2.1) flow conditions at moderate total temperature levels of the main flow up to T_t,g=600 K. The surface temperature of the C/C material was measured with thermocouples. These experimental data were used, to validate two commercial CFD codes. Two dimensional computations with FLUENT 6.3 and CFD-ACE v.2009 were conducted using user-defined subroutines for the computation of the cooling mechanisms within the porous sample. The first approach features two energy-equations (fluid and solid) coupled with an empirical heat transfer coefficient enabling the computation of thermal non-equilibrium locally in the sample. The blowing at the porous material’s surface is then simulated by source terms, which are also linked to the thermal computations within the wall. The second method follows a strongly coupled approach and accounts also for the mass and momentum transport in the porous medium. Instead of applying source terms at the porous-fluidic interface, the discretization scheme was adapted locally in order to account for the discontinuities occurring at the interface.

Item URL in elib:https://elib.dlr.de/60520/
Document Type:Conference or Workshop Item (Speech)
Additional Information:ISABE-2009-1238
Title:Experimental and Numerical Study on Transpiration Cooling with Supersonic Flow
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Langener, TobiasInstitute of Aerospace Thermodynamics, Universität StuttgartUNSPECIFIED
von Wolfersdorf, JensInstitute of Aerospace Thermodynamics, Universität StuttgartUNSPECIFIED
Kuhn, Markusmarkus.kuhn (at) dlr.deUNSPECIFIED
Date:10 September 2009
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:ATLLAS, C/C, CMC, CFD, LTNE, Porous Media, Supersonic Flow, Transpiration Cooling
Event Title:19th ISABE Conference
Event Location:Montréal, Kanada
Event Type:international Conference
Event Dates:2009-09-07 - 2009-09-11
Organizer:International Society for Airbreathing Engines
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 - Innovativer Thermalschutz (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Space Structural Components
Deposited By: Kuhn, Markus
Deposited On:03 Dec 2009 10:38
Last Modified:03 Dec 2009 10:38

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