组合叶栅的实验研究(一)

Experimental research on the combined cascades(Part Ⅰ)

首次提出了用于可逆风机叶片设计的组合叶栅设想及其评价准则 ,并对组合叶栅进行了叶栅的性能实验。通过实验数据的分析 ,肯定了组合叶栅设想的可行性。适当地选取叶栅的组合参数B、T ,可以使组合叶栅的整体性能得到大幅度的提高。与现有的翼型相比 ,CN +Rymax 、αN

The concept and definition of combined cascades are put forward for the first ti me, as well as is the special criterion of cascade for reversible fan design pre sented. Following the experimental research, the feasibility of combined cascade s is affirmed. As long as adopting suitable combined parameters, such as B a nd T ,the major improvement of cascades performance would be made. Compared t o the other airfoils used in reversible fan design, the combined cascades are co nsidered to be super to the other airfoils and the C N+R y max and the α N+R C y max could be increased respectively.