LI Wei,DI Dong,LIU Yun-peng,CHEN Deng-bing,YAN Ying-wen.Numerical Investigation and Experimental Verification of the Cold Flow Field of a Triple Swirl Combustor[J].航空发动机,2023,49(1):103-108
Numerical Investigation and Experimental Verification of the Cold Flow Field of a Triple Swirl Combustor
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Key Words:triple swirl combustor  cold flow field  observation-window  Particle Image Velocimetry  cooling hole  recirculation zone  aeroengine
Author NameAffiliationE-mail
LI Wei,DI Dong,LIU Yun-peng,CHEN Deng-bing,YAN Ying-wen College of Energy and PowerNanjing University of Aeronautics and AstronauticsNanjing 210016China liweinuaa@nuaa.edu.cn 
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Abstract:In order to explore the influence of optical observation window and 3D inclined cooling hole on the cold flow field structure of the can-type combustor,flow field characteristics of the can-type combustor baseline structure and the simplified structure were numeri? cally investigated by CFD software,and the Particle Image Velocimetry(PIV)was used to verify the cold flow field at the can-type com? bustor head with an optical observation window. The results show that the numerical results of the cold flow field in the can-type combustor are basically the same as those measured by PIV,which verifies the accuracy of the numerical calculation. The increase of the inlet air flow rate of the combustor does not affect the size of the recirculation zone of the combustor. The location of the cooling holes on the wall of the can-type combustor has little effect on the central recirculation zone of the cold flow field. As the optical observation window is set on the horizontal wall of the can-type combustor,the recirculation zone on the horizontal plane is greatly affected,while the vertical plane is al? most unaffected.
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