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Investigation of two advanced cooling mixing concepts for a rich quench lean combustor.

Diers, O. and Koopman, J. and Fischer, M. and Hassa, C. (2001) Investigation of two advanced cooling mixing concepts for a rich quench lean combustor. In: ASME Turbo Expo 2001, pp. 1-8. ASME Turbo Expo 2001, New Orleans, USA, June 4-8, 2001.

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Abstract

To support the development of a rich quench lean pilot zone for a staged aeroengine combustor, two rectangular rich quench lean (RQL) combustor sectors have been investigated under atmospheric conditions. Two advanced cooling mixing concepts, effusion and impingement cooling with one and two rows of secondary air inlet holes in the mixing zone have been measured using intrusive and nonintrusive measurement techniques. The results elucidate the interrelations between the cooling concepts and the respective mixing and emissions performances. The measurements were accompanied by numerical calculations supporting the interpretation of the measured data. Drawbacks were observed for the near stoichiometric conditions of the effusion cooling concept near the wall, however the quench zone design with two rows of staggered holes performs well. On the contrary the impingement cooling system shows good results for the homogeneity of the primary zone, but since less quench air is available with impingement cooling, optimum mixing is more difficult to achieve.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2001,
Title:Investigation of two advanced cooling mixing concepts for a rich quench lean combustor.
Authors:
AuthorsInstitution or Email of Authors
Diers, O.UNSPECIFIED
Koopman, J.UNSPECIFIED
Fischer, M.UNSPECIFIED
Hassa, C.UNSPECIFIED
Date:2001
Journal or Publication Title:ASME Turbo Expo 2001
Page Range:pp. 1-8
Editors:
EditorsEmail
ASME, UNSPECIFIED
Series Name:2001-GT-85
Status:Published
Keywords:Aeroengines, combustor, combustor cooling, RQL
Event Title:ASME Turbo Expo 2001, New Orleans, USA, June 4-8, 2001
Organizer:ASME
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L TT - Triebwerkstechnologien
DLR - Research theme (Project):L - Combustion Chamber Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 13:17

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