基于三维不可压缩流体的雷诺平均N-S方程和RNG k-ε 紊流模型，对矩形、半圆形和“ω”吸水室后壁形状的钟形进水流道泵装置进行了三维紊流数值模拟，并分析了钟形进水流道后壁形状对泵装置水力特性的影响。相同流量下，“ω”形吸水室进水流道流线分布最规则，漩涡比其他形状的进水流道小，“ω”形吸水室进水流道水力损失比矩形吸水室进水流道小1cm；出口断面的流速均匀度达到93%，比矩形和半圆形吸水室进水流道高约2个百分点；出口断面速度加权平均角度达到83.5°，比矩形吸水室进水流道高0.6°，比半圆形吸水室进水流道高0.2°；泵装置运行高效区流量范围比半圆形的拓宽了7.3%,比矩形的拓宽了30%。该研究对于完善泵站钟型进水流道吸水室优化设计具有一定意义。

Based on the three dimensional incompressible fluid Reynolds averaged navier-stokes equation and RNG k - epsilon turbulence model, the numerical simulation of three-dimensional turbulent flow of a rectangular, semicircular and bell-shaped inlet pump with "ω" suction chamber back wall shape was carried out.This paper also has analyzed the influence of wall shape on hydraulic characteristics of pump device after bell inlet passage. Under the same flow rate,streamline distribution of the “ω” shape suction chamber passage was the most average; the vortex of the “ω” shape suction chamber passage was the smallest;Hydraulic loss in the “ω” shape suction chamber passage was 1cm smaller than that of the rectangular shape suction chamber passage.Velocity uniformity of the export section reached 93%, higher than the rectangle and the semicircle suction chamber inlet port to 2%;Export section speed weighted average Angle is 83.5 °; Pump running high efficient area flow range became wider . This research had significance for improving the design of suction chamber of the Bell type inlet.

“十二五”国家科技支撑计划重点项目：(22015BAD20B01)；江苏高校优势学科建设工程资助项目