潜艇阻力及流场数值仿真策略优化分析
收稿日期: 2020-10-11
网络出版日期: 2022-05-07
基金资助
基础产品创新科研项目(CZ380)
Numerical Simulation Strategy Optimization Analysis of Submarine Resistance and Flow Field
Received date: 2020-10-11
Online published: 2022-05-07
为探寻不同湍流模型对直航潜艇阻力和流场仿真计算的影响,基于STAR-CCM+平台,以标准潜艇模型Sub-off为几何研究对象,采用有限体积法结合10种湍流模型对Sub-off的水动力及流场特征开展数值仿真研究.首先,以LES-Smagorinsky湍流模型开展网格及时间步长收敛性计算.其次,选定合适的网格方案和时间步长,结合10种湍流模型开展特定工况下的仿真计算.最后,利用甄选好的湍流模型分析Sub-off的流场特征.结果表明:10种湍流模型在潜艇的水动力性能及流场特征的预报方面存在较大差异, LES-Smagorinsky湍流模型不仅能较好地预报潜艇的水动力性能及流场平均量,还能准确预报流场的二次量.
李鹏, 王超, 孙华伟, 郭春雨 . 潜艇阻力及流场数值仿真策略优化分析[J]. 上海交通大学学报, 2022 , 56(4) : 506 -515 . DOI: 10.16183/j.cnki.jsjtu.2020.327
In order to explore the influence of different turbulence models on the resistance and flow field of an advancing submarine, based on the STAR-CCM+platform, and taking Sub-off as the geometric model, this paper adopts the finite volume method, combing 10 turbulence models to conduct numerical research on hydrodynamic and flow field characteristics of Sub-off. First, the LES-Smagorinsky turbulence model is used for the convergence of grids and time steps. Then, the appropriate grid and time step are selected to calculate 10 kinds of turbulence models in specific cases. Finally, the selected turbulence model is used to analyze the hydrodynamic characteristics and flow fields of Sub-off. The results show that there are great differences among the 10 turbulence models in the prediction of submarine hydrodynamic performance and flow field characteristics. LES-Smagorinsky can not only predict the hydrodynamic performance and the average flow field of submarine, but also accurately predict secondary variables of flow fields.
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