用于高比转速混流泵设计的流场计算  

Flow computations for the design of high specific speed mixed-flow pumps

作　　者：林恺[1] 曹树良[1] 祝宝山[1] 陆力[2] 

机构地区：[1]清华大学热能工程系,水沙科学与水利水电工程国家重点实验室,北京100084 [2]中国水利水电科学研究院机电所,北京100038

出　　处：《清华大学学报（自然科学版）》2008年第2期219-223,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家“十五”重大技术装备研制项目(ZZ02-03-01-02)

摘　　要：针对高性能高比转速混流泵水力模型开发过程中的有关问题,系统开发了一种基于两类相对流面(S1、S2流面)流动理论的正反问题迭代计算和优化设计的流场计算方法。在流体介质无粘的假设下,S1流面上采用有限单元法、S2流面上采用流线曲率法,两类流面反复迭代计算直至结果收敛,得到S1流面流场分布、叶片表面相对速度和压力系数分布、S2流面轴面速度分布等规律。流场计算采用FORTRAN语言编程实现,计算效率高、通用性强,对于高比转速混流泵水力模型的开发研究具有重要的实际意义。The flow in high specific analyzed using an analytical method speed mixed flow pumps was based on the two families of streamline surfaces theory （S1 and S2 streamline surfaces）. The method uses an iterative solution of the inverse method and an optimized design method. The iterative method assumes that the fluid is inviscid and uses the finite-element method to calculate the flow on the S1 stream surface and the streamline-curvature method to calculate the flow on the S2 stream surface. The results include the relative velocity and pressure coefficient distributions in the blade surface and the velocity distribution on the S1 streamline surface as well as the meridional velocity distribution on the S2 streamline surface. The program can be used for research and development of high specific speed mixed-flow pumps.

关 键 词：混流泵 有限元法 流线曲率法 

分 类 号：TH313[机械工程—机械制造及自动化]