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Investigation of Two Advanced Cooling Mixing Concepts for a Rich Quench Lean Combustor

Diers, Olaf and Koopman, Johan and Fischer, Michael and Hassa, Christoph (2002) Investigation of Two Advanced Cooling Mixing Concepts for a Rich Quench Lean Combustor. Transactions of the ASME, 124 (4), pp. 784-791. American Society of Mechanical Engineers. ISSN 0742-4795.

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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 non-intrusive 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:Article
Title:Investigation of Two Advanced Cooling Mixing Concepts for a Rich Quench Lean Combustor
AuthorsInstitution or Email of Authors
Fischer, MichaelUNSPECIFIED
Hassa, ChristophUNSPECIFIED
Date:October 2002
Journal or Publication Title:Transactions of the ASME
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 784-791
American Society of Mechanical Engineers, UNSPECIFIED
Publisher:American Society of Mechanical Engineers
Series Name:Journal of Engineering for Gas Turbines and Power
Keywords:Aeroengines, combustor, combustor cooling, RQL
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems
DLR - Research area:Aeronautics
DLR - Program:L TT - Triebwerkstechnologien
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Combustor
Deposited By: Olaf Diers
Deposited On:18 Jun 2007
Last Modified:27 Apr 2009 13:52

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