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Experimental and Numerical Investigation of Heat Loads in Separated Nozzle Flow

Gross, A. and Haidn, O. and Stark, R. and Zeiss, W. and Weber, C. and Weiland, C. (2001) Experimental and Numerical Investigation of Heat Loads in Separated Nozzle Flow. In: 37th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. 37th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Salt Lake City, UT, 8 - 11. July 2001.

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Abstract

2-D numerical nozzle flow simulations and cold gas subscale nozzle experiments are conducted to gain a better understanding of the various mechanisms that cause heat loads in nozzles. The 2-D numerical simulations account for non-equilibrium chemistry and show post-combustion with the entrained ambient air but cannot sufficiently explain the wall heat loads observed in the experiments. Obviously, 2-D numerics lack the physics to explain 3-D phenomena. Hence, sub scale cold gas nozzle experiments are chosen to study unsteady and 3-D effects since they are more efficient, more realistic and less costly than unsteady 3-D computations. In addition to the common diagnosis tools an infrared camera is used to visualize wall heat loads. These experiments yield 3-D streamwise structures reminiscent of Görtler vortices which may have a significant effect on the wall heat loads.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2001, monograph_id=AIAA 2001-3682,
Title:Experimental and Numerical Investigation of Heat Loads in Separated Nozzle Flow
Authors:
AuthorsInstitution or Email of Authors
Gross, A.The University of Arizona, Tucson, AZ
Haidn, O.UNSPECIFIED
Stark, R.UNSPECIFIED
Zeiss, W.Astrium GmbH, Munich
Weber, C.Astrium GmbH, Munich
Weiland, C.Astrium GmbH, Munich
Date:2001
Journal or Publication Title:37th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit
Status:Published
Event Title:37th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Salt Lake City, UT, 8 - 11. July 2001
Organizer:American Institute of Aeronautics and Astronautics
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):E -- no assignement
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 13:54

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