基于正交设计方法的混输泵叶轮优化设计

以自主研发并取得外特性试验数据的第三代混输泵叶轮为基础,应用L_9(3~4)正交表,以混输泵增压和效率为考查指标,对混输泵叶轮进行4因素3水平的正交设计,获得9组参数组合.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,分析得到一组最佳的参数组合作为优化后的叶轮参数,然后设计出与优化后叶轮配套的导叶,即得到一套优化后的增压单元设计参数.分别建立优化前后混输泵增压单元的计算流场,并对二者进行数值模拟计算.结果表明:优化后增压单元内流场特性相比优化前得到明显改善,增压提高约14.97%,效率增加约8.07%.

Optimization design of multiphase pump impeller based on orthogonal design method

Based on the impeller parameters of the third generation multiphase pump independently developed, whose external characteristic data were obtained, the L_9(3~4)orthogonal table was implemented to design the impeller of multiphase pump using pressure rise and efficiency as the evaluation targets. And 9 sets of parameters were obtained. Reynolds averaged Navier-Stokes method was adopted to simulate every set of parameters obtained by orthogonal design method. The optimized set of parameters were obtained. The matched guide vane could be generated, and the parameters of compression cell could be obtained. To simulate the characteristics of the inter flow field, both models of original inter flow field and optimized one were established. The results show that the characteristics of optimized inter flow field are obviously improved, pressure rise and efficiency are increased by 14.97% and 8.07%, respectively.