Numerical Investigation of Cavity Flow Field Characteristics in Supersonic Flow

Yi Liu; Zhi Guo Dou; Li Wei Duan

doi:10.4028/www.scientific.net/AMM.789-790.368

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 789-790Numerical Investigation of Cavity Flow Field...

Numerical Investigation of Cavity Flow Field Characteristics in Supersonic Flow

Abstract:

The cold flow field in a two dimensional cavity of supersonic combustor has been simulated numerically by using the compressible flow Navier-Stokes equation with the κ-ω SST turbulence model. The flow field structure of different cavity aft wall slope angle (16°,30° and 90°) , different fore aft wall height ratio (1 and 2) and different length depth ratio (3 and 5) are analyzed. The conclusions are as follows: As cavity aft wall slope angle decreases, the compression wave formed at cavity leading separation corner shifts into expansion wave, the shear layer moves into cavity gradually; As cavity fore aft wall height ratio increases from one to two, the expansion wave formed at cavity leading separation corner strengthens and there is no compression wave formed at;As cavity length depth ratio increases from three to five, the compression or expansion wave formed at cavity leading separation corner weakens, cavity bottom wall pressure tends to be constant and aft wall pressure rises.

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Periodical:

Applied Mechanics and Materials (Volumes 789-790)

Pages:

368-372

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.789-790.368

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Online since:

September 2015

Authors:

Yi Liu*, Zhi Guo Dou, Li Wei Duan

Keywords:

Cavity Structure, Combustor, Flow Field Structure, Numerical Simulation

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* - Corresponding Author

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