无过载旋流泵正交设计数值模拟与试验

用正交设计法对旋流泵叶轮参数进行优化设计,设计了一个五因素二水平的正交方案,研究各几何参数对旋流泵性能的影响。采用雷诺平均数值模拟方法,对正交设计中每种组合进行性能预测,通过分析性能曲线对比图,找到了对于各个性能的最优方案。对数值计算得到的数据进行极差分析,获得了各几何参数影响性能的主次顺序,通过分析与比较得出最优参数组合,即叶轮外径220mm、叶轮出口宽度40mm、叶片出口安放角14°、叶片数4和无叶腔宽度40mm。在模拟基础上,对最优模型样机进行了试验,测试结果表明,在实现无过载的同时,保持了较高的效率,达到了设计目的。

Numerical Simulation and Experiment of Latin Square Design on Non-overload Vortex Pump

The optimization design of vortex pump impeller parameter was done by using the orthogonal design method.Orthogonal scheme of five factors and two levels was designed,and the influence of geometrical parameters on the characteristics was studied.Reynolds averaged Navier-Stokes method was adopted to simulate every set of parameters obtained by the orthogonal design method.Optimal scheme of the characteristics was found by analyzing the contrast of performance curves.The influence orders of geometrical parameters to the characteristics were obtained with range analysis.The optimization parameter combination was obtained with comprehensive balance analysis and comparison to the data result.Meanwhile,the optimized design scheme was determined,and corresponding test was carried out.It demonstrated that the experimental purpose was reached,the design method was reasonable,and it had the property of both high efficiency and non-overload.