平面叶栅亚音速可压缩流场计算的三种边界元法途径  

THREE BOUND AY ELEMENT METHCD APPROACHES TO THE COMPUTATION OF SUBSONIC COMPRESSIBLE FLOW FIELDS OF PLANE CASSADE

作　　者：林成先[1] 廖艾贤[2] 

机构地区：[1]重庆大学 [2]西南交通大学

出　　处：《重庆大学学报（自然科学版）》1991年第1期52-59,共8页Journal of Chongqing University

摘　　要：研究了平面叶栅在线性化小扰动范围的亚音速可压缩位势流场的三种边界元法计算途径。其一是移用正交异性域位势问题的边界元法;其二是先把物理平面内的亚音速可压缩流场变换成计算平面内的不可压缩流场,再用边界元法进行计算;方法之三是用压缩性修正法对不可压缩流场的边界元法计算结果进行修正。算例表明了这三种处理方法各自的特点。Three Boundary Element Method approaches to the subsonic compressible potential flow fields of plane cascade within the range of linearity and small pertubation are stiudied. The first approach is to make use of the Boundary Element Method used in the orthotropic case; the second is to transform the compressible flow field in physical space into the incompressible flow in computational space, and then the boundary Element Methed is applied to solve the latter; the third is to correct the re-suts of the incompressible potential flow abtained from the Boundary Element Method computations by compressibility correction. Results from the examples of computation show the respective features of the three approaches.

关 键 词：平面叶栅 流场 可压缩流 边界元法 

分 类 号：TB126[理学—工程力学]