基于流固耦合的化容补水泵性能分析  

Analysis of the Performance of a Chemical Vessel Make-up Water Pump Based on a Fluid-solid Coupling

作　　者：朱利凯[1] 胡敬宁[1] 张军辉[1] 李浩[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《热能动力工程》2012年第4期483-488,520,共6页Journal of Engineering for Thermal Energy and Power

摘　　要：设计3组化容补水泵模型,运用Pro/E建立三维模型,由CFD软件仿真,并对水力模型进行试验,对比试验与仿真结果,获取最优模型。通过ANSYS Workbench建立CFD与Static Structural(静力学)和Modal(模态)连接,对最优模型进行分析,以泵三维定常数值计算结果为基础,利用顺序耦合技术,对固体和流体域进行迭代,分析叶轮的静态应力和振型。结果表明,在水压力作用下叶片变形最大位移发生在叶片出水边靠近叶片边缘处,由平衡孔作用,叶片的等效应力相对均匀较小,叶轮轮毂处因叶轮前后面压差作用,等效应力较大。设计工况下,叶轮轮毂变形对振型的影响明显。Three groups of models were designed for chemical vessel supplementary water pumps and three-dimensional models were established by using the software Pro/E.CFD software was used to conduct a simulation and a test was performed of the hydraulic models to acquire an optimum model by comparing the test results with the simulation ones.The link of the CFD with the Static Structural and Modal was established by using the Ansys Workbench to conduct an analysis of the optimum model.On the basis of the three-dimensional steady numerical calculation results of the pump and by making use of the sequence coupling technology,an iterative calculation was performed of the solid and fluid domain to analyze the static stress and vibration mode of the impeller.It has been found that under the action of the hydraulic pressure,the maximal displacement due to the blade deformation occurs at a place nearing the trailing edge of the blade.Due to an action of the balance holes,the equivalent stress of the blade is relatively uniform and small.Under the action of the pressure difference before and after the wheel,the hub has a relatively big equivalent stress.Under the design operating condition,the deformation of the hub has a conspicuous influence on the vibration mode.

关 键 词：化容补水泵 静应力 模态 流固耦合 

分 类 号：TL353[核科学技术—核技术及应用] O242[理学—计算数学]