中文摘要：

针对传统阴离子交换器给水泵叶轮在结构和工作效率方面的不足,以提高机械效率为目标,采用速度系数法对叶轮的结构尺寸进行了设计计算,在此基础上,建立了叶轮流道的三维模型,并利用CFD技术和FLUENT软件对阴离子交换器给水泵内部流场进行可压缩非稳态流动的数值模拟,运用GAMBIT前处理软件对叶轮的三维流道模型进行了网格划分,设置好边界条件和控制方程后,进行仿真实验,得到叶轮在接近正常工作模式下的叶片的压力分布图,流道的压力分布图和速度分布图,分析发现较传统的结构,叶轮性能有了明显提高,最后将优化前后两种工作模式下的效率进行了比较,从理论上验证了优化设计方案的正确性和优越性。

英文摘要：

A iming at the shortcomings of the traditional feed water pump impeller of anian exchanger in the aspect of structure and work efficiency, being the goa!to improve the mechanical efficiency,it uses the velocity coefficient method of impeller design, the structure size of impeller passage of a three-dimensianal model is established, and using the CFD technology and FLUENT to simulate the internal flow field of anion exchanger feed pump in compressible unsteady flow, using GAMBIT pretreatment software for 3D flow model of impeller meshing, setting the boundary conditions and control equation, by the simulation experiment, getting in close to the normal work mode of blade impeller pressure distribution, pressure distribution and velocity distribution of flow. Analysis found that compared with the traditional structure the impeller performance is obviously improved, the final will be two kinds of working mode before and @er optimization, and the efficiency of the optimized design scheme is verified theoretically and superiority.