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Effects of Clearance between Rotor and Ground on the Performance of an Open Cross-Flow-Type Nano-Hydraulic Turbine

Effects of Clearance between Rotor and Ground on the Performance of an Open Cross-Flow-Type Nano-Hydraulic Turbine
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摘要 Flows through an open cross-flow-type nano-hydraulic turbine are numerically simulated to investigate the effects of the clearance Hc between the rotor and the ground on the turbine performance. A two-dimensional particle method is employed, which was successfully used for flow simulations of impulse-type and open cross-flow-type nano-hydraulic turbines in the authors＇ previous works. When the clearance Hc is smaller than a critical value, the simulated turbine performance decreases with decreasing Hc, in good agreement with the experiment. The simulations make it clear that such a reduction of turbine performance is attributable to an increase in the circumferential component of the water velocity at the rotor outlet. The simulations also demonstrate that the effect of the tip speed ratio of the rotor on the relation between Hc and turbine performance can be analyzed.
作者 Tomomi Uchiyama Shouhei Mizoguchi Shouichiro Iio Yusuke Katayama Toshihiko Ikeda
机构地区 Institute for Materials and Systems for Sustainability Toyota Motor Corporation Faculty of Engineering
出处 《Journal of Energy and Power Engineering》 2016年第8期465-473,共9页 能源与动力工程（美国大卫英文）
关键词 Nano-hydraulic turbine computer simulation WATERFALL particle method. 贯流式水轮机 离地间隙 转子出口 横流式 开放式 性能 纳米 地面
分类号 TK733.8 [交通运输工程—轮机工程] U469.11 [机械工程—车辆工程]
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Journal of Energy and Power Engineering
2016年 第8期

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