3D Flow Past Transonic Turbine Cascade SE 1050-Experiment and Numerical Simulations  

作　　者：D.imurda J.Fürst M.Luxa 

机构地区：[1]Institute of Thermomechanics AS CR, v.v.i.,Dolejskova 1402/5, Prague, Czech Republic [2]CTU in Prague, Faculty of Mechanical Engineering, Dpt.of Technical Mathematics,Karlovo Náměstí 13, Prague, Czech Republic

出　　处：《Journal of Thermal Science》2013年第4期311-319,共9页热科学学报（英文版）

基　　金：supported by the Czech Science Foundation under the grant No. GAP 101/10/1329

摘　　要：This paper is concerned with experimental and numerical research on 3D flow past prismatic turbine cascade SE1050 （known in QNET network as open test case SE1050）. The primary goal was to assess the influence of the inlet velocity profile on the flow structures in the interblade channel and on the flow field parameters at the cascade exit and to compare these findings to results of numerical simulations. Investigations of 3D flow past the cascade with non-uniform inlet velocity profile were carried out both experimentally and numerically at subsonic （M2 = 0.8） and at transonic （M2 = 1.2） regime at design angle of incidence. Experimental data was obtained using a traversing device with a five-hole conical probe. Numerically, the 3D flow was simulated by open source code OpenFOAM and in-house code. Analyses of experimental data and CFD simulations have revealed the development of distinctive vortex structures resulting from non-uniform inlet velocity profile. Origin of these structures results in increased loss of kinetic energy and spanwise shift of kinetic energy loss coefficient distribution. Differences found between the subsonic and the transonic case confirm earlier findings available in the literature. Results of CFD and experiments agree reasonably well.

关 键 词：blade cascade vortex structures transonic flow CFD 

分 类 号：TK14[动力工程及工程热物理—热能工程]