| 海底边界效应对海流发电水轮机水动力性能影响研究 |
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| 引用本文： | 盛传明,练继建,林大明,徐宝,黄宣旭.海底边界效应对海流发电水轮机水动力性能影响研究[J].海洋工程,2017,35(2):75-82. |
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| 作者姓名： | 盛传明 练继建 林大明 徐宝 黄宣旭 |
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| 作者单位： | 天津大学 前沿技术研究院有限公司，天津 301700,天津大学 前沿技术研究院有限公司，天津 301700,天津大学 前沿技术研究院有限公司，天津 301700,天津大学 前沿技术研究院有限公司，天津 301700,江苏道达海上风电工程科技有限公司，南通 226000 |
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| 基金项目： | 江苏省科技支撑计划 工业部分资助项目（BE2014091）；与防波堤结合的新型波浪能发电及利用关键技术资助项目 |
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| 摘 要： | 对30 W海流能水平轴水轮机进行叶片设计,应用FLUENT软件对水轮机的水动力性能进行数值模拟,研究了边界效应对叶片表面压力、流场、湍流强度、获能和轴向力的影响。受海底边界效应影响,海流速度沿深度呈现梯度变化,底层流速较小,中上层流速较大。边界效应导致水轮机的水动力性能呈现周期性变化,降低了水轮机的获能和轴向力。机组布置时,宜选择水流稳定且流速较大的中上层区域。
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| 关 键 词： | 水平轴水轮机 水动力性能 边界效应 海流能 |
Influence of boundary effect to hydrodynamic performance of marine current turbine |
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| SHENG Chuanming,LIAN Jijian,LIN Daming,XU Bao and HUANG Xunaxu.Influence of boundary effect to hydrodynamic performance of marine current turbine[J].Ocean Engineering,2017,35(2):75-82. |
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| Authors: | SHENG Chuanming LIAN Jijian LIN Daming XU Bao and HUANG Xunaxu |
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| Abstract: | The blade of a 30W horizontal axis marine current turbine was designed. Numerical simulation of hydrodynamic performance of marine current turbine was made by using computational fluid dynamic software FLUENT. The influence of boundary effect to surface pressure distribution of blade, velocity distribution of flow field, turbulent kinetic energy, power and axial force were analyzed. Velocity gradient along the water depth is caused by boundary effect of bed. The closer to bottom, the smaller flow velocity. Boundary effect leads to periodic change of hydrodynamic performance, and power and axial force is reduced then. Marine current turbine should be installed in the upper level of seawater which has a stable and larger velocity. |
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| Keywords: | horizontal axis turbine hydrodynamic performance boundary effect power |
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