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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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)|
|Title:||Investigation of two advanced cooling mixing concepts for a rich quench lean combustor.|
|Journal or Publication Title:||ASME Turbo Expo 2001|
|Page Range:||pp. 1-8|
|Keywords:||Aeroengines, combustor, combustor cooling, RQL|
|Event Title:||ASME Turbo Expo 2001, New Orleans, USA, June 4-8, 2001|
|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|
|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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