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Analysis of Mixing Enhancement Using Streamwise Vortices in a Supersonic Combustor by Application of Laser Diagnostics

Sunami, T. and Scheel, F. (2002) Analysis of Mixing Enhancement Using Streamwise Vortices in a Supersonic Combustor by Application of Laser Diagnostics. In: 11th AIAA/AAAF International Conference Space Planes and Hypersonic Systems and Technologies, Orleans, France. AIAA. 11th AIAA/AAAF International Conference Space Planes and Hypersonic Systems and Technologies, Orleans, France, 29 September - 4 October, 2002.

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Abstract

In this paper, we will present first overview of our experimental investigation on the mixing processes by the supersonic streamwise vortices using Mie scattering. Main purposes of this study are to clarify how the fuel/air mixing processes are affected by the initial streamwise vortex arrangements in terms of vortex circulations and co- or counter-rotation and combustion heat release. Experiments are conducted Mach 2.48 direct-connect supersonic combustor. Four kinds of Alternating-Wedge fuel injector struts are examined. Results show that initial arrangement of streamwise vortices significantly affect the mixing processes, such as the rotational motion of the streamwise vortices due to their mutual interactions through their induced velocity field and following streamwise vortex (fuel jet) structuraes, growth rate of mixing region, evolution of turbulent motions within the hydrogen jet (large-scale streamwise vortices). It is also revaeled that structures of fuel jet (streamwise vortices) are strongly affected by combustion heat release to obtain more uniform fuel distribution.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2003, monograph_id=AIAA 2002-5203,
Title:Analysis of Mixing Enhancement Using Streamwise Vortices in a Supersonic Combustor by Application of Laser Diagnostics
Authors:
AuthorsInstitution or Email of Authors
Sunami, T.NAL
Scheel, F.UNSPECIFIED
Date:2002
Journal or Publication Title:11th AIAA/AAAF International Conference Space Planes and Hypersonic Systems and Technologies, Orleans, France
Editors:
EditorsEmail
AIAA, UNSPECIFIED
Publisher:AIAA
Status:Published
Event Title:11th AIAA/AAAF International Conference Space Planes and Hypersonic Systems and Technologies, Orleans, France, 29 September - 4 October, 2002
Organizer:American Institute of Aeronautics and Astronautics (AIAA)
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: Monika Lohmiller
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 14:02

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