漂浮取水泵内部流场的数值模拟及性能试验

为了研究漂浮取水泵内部流场分布规律,基于Pro/E建立了内部流场模型,利用FLUENT对内部流场进行了数值模拟,得到了压力、速度分布规律以及外特性曲线,并结合性能试验,对数值模拟进行了验证。结果表明:漂浮取水泵存在无过载的功率曲线及高效区较宽的效率曲线;叶片旋转中心受静压较边缘低;旋转叶片速度较大;在额定流量工况下,叶轮具有较均匀的速度和流场分布规律;性能试验验证了数值模拟的正确性。研究结果为掌握泵的内部流场分布规律、改善泵的水力特性、提高泵的效率提供一定参考。

Inner Flow Field Numerical Simulation of Floating Water Pump and Performance Test

In order to study the distribution of inner flow field of floating water pump,an inner flow field model is established based on Pro / E. FLUENT is used to conduct the numerical simulation of inner flow field. Pressure,velocity distributions and external characteristic curves are informed. Performance test is used to verify the correctness of the numerical simulation. The results show that there are a humped power curve and a broad high efficiency area on efficiency curve. Static pressure in the center of rotation of blade is higher than other parts. Also the velocity of blade is larger than others. Under the rated flow condition,there are uniform distributions of the velocity and flow field of impeller. Performance test verifies the correctness of the numerical simulation. The paper provides certain references for understanding the rules of inner flow field distributions,optimizing the hydraulic characteristics and improving the efficiency of floating water pump.