| 水平轴潮流能水轮机数值模拟方法对比分析 |
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| 引用本文： | 廖微,王兵振,张巍,段云琪.水平轴潮流能水轮机数值模拟方法对比分析[J].海洋技术,2016(1):113-117. |
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| 作者姓名： | 廖微 王兵振 张巍 段云琪 |
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| 作者单位： | 国家海洋技术中心,天津,300112 |
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| 基金项目： | 海洋公益性行业科研专项经费资助项目(201205019-3) |
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| 摘 要： | 叶素动量理论和CFD方法是水平轴潮流能水轮机性能分析中运用较为广泛的数值模拟方法,文中结合小尺寸水轮机模型试验,对比分析了叶素动量理论和CFD方法在水轮机性能分析中的准确性和适用性.验证结果表明:叶素动量理论和CFD方法均能对水轮机的性能进行预报,且CFD精度高于动量叶素理论;大尖速比时,动量叶素理论偏离较高,不再适合性能预报;在小尖速比下,建议采用RNGk-ε模型的CFD方法进行分析计算;动量叶素理论适合设计初期设计方案的对比分析,而CFD方法适合对设计结果的验证校核和详细分析.
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| 关 键 词： | 水平轴水轮机 数值模拟 叶素动量理论 CFD方法 水池试验 |
Comparative Analysis on the Numerical Simulation Methods for Horizontal Axis Tidal Current Turbines |
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| LIAO Wei,WANG Bing-zhen,ZHANG Wei,DUAN Yun-qi.Comparative Analysis on the Numerical Simulation Methods for Horizontal Axis Tidal Current Turbines[J].Ocean Technology,2016(1):113-117. |
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| Authors: | LIAO Wei WANG Bing-zhen ZHANG Wei DUAN Yun-qi |
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| Institution: | National Ocean Technology Center |
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| Abstract: | This paper conducts a comparative analysis on the accuracy and applicability of the blade element momentum (BEM) theory and computational fluid dynamics (CFD) method, the two most widely used numerical simulation methods for hydrodynamic performance analysis of horizontal axis tidal current turbine. To verify the computational results, an open water test is carried out in a towing tank with a self-designed turbine. The results show that both the two methods can provide a satisfactory prediction for the experimental turbine performance, and a higher accuracy is acquired with CFD. With increasing tip speed ratio (TSR), higher deviation is observed with the BEM theory, not applicable for prediction anymore. For low TSR, in contrast, it is suggested that the CFD method of the RNG model be adopted for analysis and calculation. Furthermore, the use of BEM is suited to the comparative analysis of the design scheme under early stage, while CFD is for post-design validation and in-depth analysis. |
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| Keywords: | horizontal axis tidal current turbine numerical simulation blade element momentum theory computational fluid dynamic (CFD) method towing tank test |
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