Experimental Investigation of Effects of Reynolds Number and Incidence Angle on Secondary Flow within a Linear Blade Cascade  

作　　者：FLÍDR Erik JELÍNEK Tomáš KLADRUBSKÝMilan 

机构地区：[1]Laboratory of High Speed Aerodynamics,Czech Aerospace Research Center,Beranovych 130,Prague 19905,Czech Republic

出　　处：《Journal of Thermal Science》2021年第6期2122-2136,共15页热科学学报（英文版）

基　　金：supported by the Long-Term Development Concept of Research Organization provided by the Ministry of Industry and Trade of the Czech Republic.

摘　　要：The kinetic energy loss and the secondary loss downstream of a high turning nozzle cascade were investigated.Influence of the incidence angle(i=-25°,0°and 25°)and Reynolds number(Re_(2,is)=0.8×10^(5),1.2×10^(5),2.5×10^(5) and 4.5×10^(5))were studied on two cascade configurations defined by different pitch to chord ratio(t/c=0.6 and 0.9),respectively.Measurements at the cascade inlet were performed by means of Preston tube,while at the cascade outlet by means of miniature pyramid five-hole pressure probe.An effect of studied parameters on the flow field at the cascade outlet was shown by the distribution of the kinetic energy loss,secondary loss,mix-out loss and streamwise vorticity.

关 键 词：linear blade cascade secondary loss pressure measurement 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]