基于流固耦合的耐高温双吸双流道泵强度分析  

STRENGTH ANALYSIS OF HIGH-TEMPERATURE DOUBLE-CHANNEL WITH DOUBLE-SUCTION PUMP BASED ON FLUID-SOLID COUPLING METHOD

作　　者：罗宝杰 赖喜德[1] 张翔[1] 雷明川[1] 彭悦蓉[1] 

机构地区：[1]西华大学能源与环境学院,成都610039

出　　处：《机械强度》2014年第4期645-650,共6页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(51379179);四川省教育厅基金资助项目(11ZB008);西华大学重点项目(z1120414);西华大学研究生创新基金资助(ycjj2014066)~~

摘　　要：基于CFD性能预测方法,对双吸双流道泵内部流场进行三维数值模拟,将流场的计算结果作为结构场的初始条件。采用单向流固耦合方法对泵转子系统进行仿真计算,以预测其在不同的温度条件下,泵转子系统的强度和刚度。研究结果表明,各部件的最大等效应力远远小于材料的许用应力,最大变形都在工程允许的范围之内。各阶固有频率远离泵的叶频与轴频,各阶临界转速远远高于额定转速,泵运行过程中发生共振的可能性极小。该研究可为进一步研究双吸双流道泵的水力设计和结构优化提供一定的参考。Based on CFD performance prediction method, three-dimensional numerical simulation of the double-channel with double-suction Pump was executed. In order to predict the stiffness and strength of the pump rotor system at different temperature conditions, the simulation of the pump rotor system use one-way fluid-solid coupling method by importing the flow field calculation results as the initial conditions. The results show that the maximum stress of the pump components is much smaller than the material allowable stress and the maximum deformation is the permissible range in the engineering. As well as, the natural frequencies are also far away from the leaf frequency and the shaft frequency of the pump. Each of the critical speed is much higher than the rated speed. The resonance of the pump during the operation is very unlikely. The study can provide some references for further study on hydraulic design and structural optimization design.

关 键 词：双吸双流道泵 转子系统 流固耦合 数值模拟 

分 类 号：TH311[机械工程—机械制造及自动化]