Abstract：In order to carry out energy conversion analysis and parameter optimization for the hydraulic turbine in hose reel irrigator JP75, its internal flow at a rotational speed of 250 r/min was numerically simulated by using CFD technique. According to the pressure and the velocity contours predicted, the unreasonably designed bend and throat are responsible for low turbine efficiency. Through an analysis of the internal flow field, it is found that the turbine blades in the inlet and outlet are improperly designed, resulting in a large number of vortices in the blade clearance to generate a partial energy loss. The energy conversion in the jet section and runner was calculated, the average conversion efficiencies are 26.31% and 45.44%, respectively. Obviously, these conversion efficiencies are fairly low. On the basis above, the design parameters of the hydraulic turbine were optimized. The optimized nominal diameter, jet diameter and water head are 0.201 m, 0.021 m and 13.65 m, respectively.
陆静*, 程俊. JP75型卷盘式喷灌机水涡轮能量转换数值模拟分析[J]. 排灌机械工程学报, 2018, 36(5): 448-453.
LU Jing*, CHENG Jun. Numerical simulation analysis of energy conversion in hydraulic turbine of hose reel irrigator JP75. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(5): 448-453.
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