EULER-BASED INVERSE METHOD FOR TURBOMACHINE BLADES .1. 2-DIMENSIONAL CASCADES

被引:31
作者
DANG, T
ISGRO, V
机构
[1] Department of Mechanical, Aerospace, and Manufacturing Engineering, Syracuse University, Syracuse, NY
关键词
D O I
10.2514/3.12985
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
A three dimensional inverse method for the aerodynamic design of turbomachine blades using robust time-marching algorithms for the numerical solutions of the Euler equations is proposed. In this inverse method, the circumferential mass-averaged tangential velocity (or the blade loading) is the primary specified flow quantity, and the corresponding blade geometry is sought after. The presence of the blades Is represented by a periodic array of discrete body forces which is included in the equations of motion. A four-stage Runge-Kutta time-stepping scheme is used to march a finite volume formulation of the unsteady Euler equations to a steady-state solution. Modification of the blade geometry during this time-marching process is achieved using the flow-tangency conditions along the blade surfaces. In this paper, the method is demonstrated for the design of two-dimensional infinitely thin cascaded blades ranging from the subsonic to the supersonic flow regimes, including cases with rotational hows and complex shock structures in the flow passage.
引用
收藏
页码:2309 / 2315
页数:7
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