基于Zwart模型的化工离心泵空化性能数值模拟

摘要

The 131 specific speed centrifugal pump was performed numerical simulation and ex-perimental research for cavitation performance.Meanwhile,numerical results were compared with experimental results,both cavitation curve more consistent.Furthermore,the cavitation and total pressure distribution law in impeller channels was analyzed under the design conditions. The use of Zwart cavitation model to perform numerical simulation can better reflect cavitation performance of centrifugal pump.The results can provide a theoretical basis for the design of cen-trifugal pumps.%以比转速为131的离心泵为研究对象,采用Zwart空化模型对离心泵的空化性能进行数值模拟,同时对离心泵进行空化性能试验研究,并将数值模拟与试验研究的结果进行对比,结果显示两者的空化曲线较为一致.对设计工况下叶轮流道空泡和总压分布规律进行了分析,采用Zwart空化模型进行数值模拟计算,其结果能够较好地反映离心泵的空化性能.