| 基于局部时均Navier-Stokes模型的分域计算方法 |
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| 引用本文： | 罗倩,胡常莉. 基于局部时均Navier-Stokes模型的分域计算方法[J]. 兵工学报, 2021, 42(1): 100-107. DOI: 10.3969/j.issn.1000-1093.2021.01.011 |
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| 作者姓名： | 罗倩 胡常莉 |
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| 作者单位： | (南京理工大学 能源与动力工程学院, 江苏 南京 210094) |
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| 基金项目： | 国家自然科学青年科学基金项目 |
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| 摘 要： | 基于标准局部时均Navier-Stokes模型中控制参数fk的取值特点,提出一种基于分域思想的计算方法.针对不同的流域采用不同的fk值,实现在同一个计算流域设置不同湍流模型的效果.应用该方法分别计算绕方柱的单相流动和绕Clark-y水翼的非定常空化流动,并将计算结果与相应实验结果进行对比.结果表明:数值计算得到的方柱表...
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| 关 键 词： | 局部时均Navier-Stokes模型 分域计算 方柱绕流 非定常空化 |
Domain Computing Method Based on Partially-averaged Navier-Stokes Turbulence Model |
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| LUO Qian,HU Changli. Domain Computing Method Based on Partially-averaged Navier-Stokes Turbulence Model[J]. Acta Armamentarii, 2021, 42(1): 100-107. DOI: 10.3969/j.issn.1000-1093.2021.01.011 |
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| Authors: | LUO Qian HU Changli |
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| Affiliation: | (School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China) |
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| Abstract: | A partially-averaged Navier-Stokes（PANS）method is proposed to calculate different regions of flow field with different values of fk, which imposes the different turbulence models to be set at the same time. The proposed method is applied to simulate the single-phase flow around the two-dimensional square cylinder and the unsteady cavitating flows around Clark-y hydrofoil, respectively. The modified PANS model well predicts the pressure coefficient distributions on the surface of square cylinder and the velocity distribution at different sections of flow field. In addition, it can well capture the time evolutions of the cavities around the Clark-y hydrofoil and the fluctuation of lift coefficient of hydrofoil. |
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| Keywords: | partially-averagedNavier-Stokesmodel domaincomputing flowaroundsquarecylinder unsteadycavitatingflow |
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