低雷诺数下尾迹与分离边界层的相互作用研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2007, Vol. 28 ›› Issue (1): 58-63.

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Investigation of the Interaction Between Wake and Separated Boundary Layer at Low Reynolds Numbers

YANG Lin¹,ZOU Zheng-ping¹,LI Wei²

1. National Key Laboratory of Aircraft Engine, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, 2. Zhuzhou Aviation Powerplant Research Institute

Received:2005-06-20 Revised:2006-10-08 Online:2007-01-10 Published:2007-01-10
Contact: ZOU Zheng-ping¹

Abstract

Abstract:

The suction boundary layer development of typical aft-loading low pressure turbine was modeled by flat plate with proper pressure gradient. Interaction between wake and separated boundary layer was investigated. The effect of Reynolds number was studied and the interaction of separated region with trailing edge vortex shedding at very low Reynolds number was analyzed. The results show that at the same exit Mach number, the isentropic Mach number of the wall changes and the peak Mach number decreases with decreasing Reynolds number.

Key words: turbine, , simulation, , wake, , unsteady, , separation, , boundary , layer

CLC Number:

V231.3

YANG Lin;ZOU Zheng-ping;LI Wei. Investigation of the Interaction Between Wake and Separated Boundary Layer at Low Reynolds Numbers[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2007, 28(1): 58-63.

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Investigation of the Interaction Between Wake and Separated Boundary Layer at Low Reynolds Numbers

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