为了解高海拔地区离心泵的运行特点，采用Fluent软件中的MRF模型，以离心泵在3000 m的实际运行参数为输入量，对不同海拔高度（0 m、1000 m、2000 m、3000 m、4000 m、5000 m）情况下离心泵的内部流场进行数值模拟，探讨其压强、速度的变化规律。结果表明：海拔高度为5000 m时离心泵内部流场的平均压强为47672.15 Pa，是平原上平均压强的50％；海拔高度对离心泵内部速度场以及速度矢量场的影响作用很小，可忽略不计。%In order to obtain the operational characteristics of centrifugal pumps in a high⁃elevation area, the flow field inside a centrifugal pump at different elevations ( 0 m, 1 000 m, 2 000 m, 3 000 m, 4 000 m, and 5 000 m) was simulated numerically using the MRF model within the Fluent software with the actual operational parameters at an elevation of 3 000 m as input. The change rules of pressure and velocity in the flow field inside the centrifugal pump were examined. The results show that while the elevation is 5 000 m, the average pressure in the flow field inside the centrifugal pump is 47 672. 15 Pa, which is half of the average pressure in plain areas. The influence of the elevation on the velocity field and velocity vector field is small, and can be negligible.
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