有限元法求解转轮内部流场入出口边界的处理  

FEM Applied to Solve Inlet/Outlet Boundary Problems of Turbomachine's Internal Flow Field

作　　者：刘永贤[1] 纪维礼[2] 

机构地区：[1]东北工学院机械二系 [2]东北工学院热能系

出　　处：《东北工学院学报》1989年第4期433-438,共6页

摘　　要：本文基于变分原理,以势函数为未知量,分析了转轮内部流场的入、出口边界条件,并以此为基础导出了 20结点等参元离散后,入、出口边界条件的数学模型,给出了直接三维有限元求解转轮内部流场时,不同的入、出口截面的处理方法及过程。并给出实算结果。With variational principle taken a8 the basis and potential function as un-known,the inlet/outlet boundary conditions are analysed for a turbomachine'sinternal flow field. Mathematical models for inlet/outlet boundary conditionsare thus developed respectively, by way of discretizing 20 nodal isoparametricelements. The boundary treatment and procedure for various cross-sectionalinlets/outlets are presented in case using three--dimensional finite element me-thod to solve directly the internal flow field of the turbomachine, with an in-stance of calculations included.

关 键 词：有限元 转轮 流场 入口 出口 

分 类 号：TK14[动力工程及工程热物理—热能工程]