带前置定子导管桨梢隙流动数值分析(刘登成; 张志荣; 黄国富; 唐登海)

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B;y HBb0带前置定子导管桨梢隙流动数值分析

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【作者】刘登成; 张志荣; 黄国富; 唐登海 【作者单位】中国船舶科学研究中心

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#I&b+e w$ls"XGf0【论文摘要】 本研究对梢隙流动计算网格的生成方法进行了研究,建立了一种生成梢隙结构化网格的方法,并用 RANS 求解器,采用混合面方法,结合 SST k-ω湍流模型,对梢隙流动进行了数值模拟,研究了数值模拟梢隙流动中网格结构的影响,并对模拟所得到的结果进行了分析.研究表明,该方法能较好地模拟出梢隙流动现象,且由结构化网格的预报结果可知,带前置定子的导管桨梢隙处的流动存在四种类型的涡结构。网格的拓扑结构对梢隙流动的模拟结果有很大影响,非结构化网格能预报出与结构化网格精度相当的水动力性能,但预报的流场明显要比结构化网格预报的差。

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【英文论文摘要】 The method of generated grid on simulating tip clearance flow of ducted propeller with ex-stator is presented in the paper.The flows of tip clearance were numerically simulated.The mixing plane method and SST k-ω turbulent model were implemented in the RANS solver.The influences of grid topology on simulation of tip clearance flow were investigated.It shows that the method is feasible for simulating of tip clearance flow,and there are four types of eddy in tip clearance flow of ducted propeller with ex-stator.For the predicted hydrodynamic performance,it has the same precision whether using structure mesh or using unstructured mesh.But the predicted flow field using structure mesh is better than using unstructured mesh.水利论文T*T\fQK

&Oe#O&O3prv6{ t0【论文关键词】 带定子导管桨; 梢隙流动; 数值分析水利论文HB_N`#s)c&Dzc
【英文论文关键词】 ducted propeller with ex-stator; tip clearance flow; numerical simulation水利论文-X;nCuqW%nk/JQ
【基金】水动力学国防科技重点实验室基金项目(9140C220105)资助.水利论文1Q4QJ_5CW
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TAG: 黄国富 数值分析 张志荣 刘登成 唐登海
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