基于响应面法的圆盘泵叶轮优化研究

为了提高圆盘泵的水力性能,以径向直叶片圆盘泵为研究对象,结合计算流体动力学方法(CFD)与响应面分析法,研究叶轮结构参数对泵扬程和效率的影响.以叶片高度、叶片数量和盘间距为优化设计变量,泵的扬程和效率为响应变量,基于Box-Behnken样本点设计法进行三因素三水平设计,建立17组样本点.通过ANSYS CFX数值计算...

Research onOptimization of Disc Pump Impeller Based on Response Surface Method

To improve the hydraulic performance of the disc pump,the influence of impeller structural parameters on the pump head and efficiency was studied by Computational Fluid Dynamics (CFD) method and response surface analysis method,based on current radial straight vane disc pump.The blade height,number of blades and disc spacing were defined as optimization design variables,and the head and efficiency of the disc pump were the response variables.Seventeen groups of sampling points were established through three factor and three level design implemented based on the Box Behnken sampling point design method.Numerical simulations on the design models of each sampling point were performed by ANSYS CFX numerical software,to obtain the numerical results of hydraulic performance,analyze the influence of individual and interactive effects of blade height,number of blades and disc spacing,and fit the relational express of impeller structure parameters with head and efficiency based on second order response surface regression equation.The research results show that the blade height,number of blades and disc spacing all have obvious influence on the hydraulic performance of the disc pump,and the combination of blade height and disc spacing has the most significant influence among multi factor interactive effects.The optimal parameter combination is found by the response surface equation.The head of the optimized disc pump is increased by 22 m on average,and the maximum efficiency is increased by 15% under various flow conditions.