利用损失模型及计算流体力学方法对低比转速R32离心和旋涡泵性能预测进行研究，结果表明：损失模型与计算流体力学方法预测出的性能曲线吻合较好；低比转速离心泵中轮阻损失占总流动损失的80％以上，对泵性能有重要影响；旋涡泵的纵向旋涡强度随流量增大而减弱；离心泵比旋涡泵具有较宽的运行范围，在小流量情况下旋涡泵比离心泵具有较高的效率和扬程。研究工作对丰富低比转速泵流动理论与设计方法具有参考价值。
Performance prediction of low specific speed R32 centrifugal and vortex pump is conducted by using loss model and computational fluid dynamics （CFD） method, respectively. Numerical results indicate that the performance curves predicted by the loss model and CFD method are in good agreement. The disc friction loss occupies more than 80 percent of the total flow loss in centrifugal pump and has a critical role in pump performance. The strength of longitudinal vortex in vortex pump decreases with the increasing of flow rate. The centrifugal pump has a wider operating range than vortex pump, however, the vortex pump reaches higher efficiency and head at very small flow rate. This study is of reference value in understanding the fluid mechanics and design method of low specific speed pump.
参考文献
| [1] | WU YuLin,LIU ShuHong,YUAN HuiJing,SHAO Jie.PIV measurement on internal instantaneous flows of a centrifugal pump[J].中国科学:技术科学（英文版）,2011(02):270-276. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%