# 潜艇绕流与雷诺数对流场影响的数值模拟研究 （张楠; 沈泓萃; 姚惠之; 马丽君）

【作者】张楠; 沈泓萃; 姚惠之; 马丽君 【作者单位】中国船舶科学研究中心; 中船重工集团七0三所无锡分部

【论文摘要】 采用求解 RANS 方程的方法,结合5种湍流模型(k-ε、RNG k-ε、k-w、SST k-w、 RSM),对潜艇模型 SUBOFF 和潜艇模型 SubB 在不同状态下的黏性绕流进行了数值模拟.首先分析了支杆对于模型桨盘面流场的影响,计算给出了尾流场轴向速度、七阶谐波分量以及两支杆根部流线分布,从计算角度证实了两薄翼型支杆支撑、模型反装这种安装方式的合理性。其次,用5种湍流模型预报了 SUBOFF 潜艇模型两种附体状态下(裸艇体+围壳、裸艇体+尾翼) 的尾流场,也预报了 SubB 潜艇模型金附体状态下的尾流场,并与试验结果进行了对比分析, 比较了5种湍流模型的计算精度.最后,利用 CFD 方法探讨了雷诺数对 SUBOFF 潜艇绕流影响的问题.计算了 SUBOFF 潜艇在不同雷诺数下的绕流,详细分析了尾流场轴向速度波动图、轴向速度等值线云图、边界层厚度和主附体接合部涡旋结构随雷诺数的变化.

【英文论文摘要】 The viscous flow fields of two submarine models SUBOFF and SubB in different conditions are numerically simulated by solving RANS equations with five turbulence models (k-e, RNG k-e,k-w,SST k-w,RSM).Firstly,the effect of supporting struts on model wake flow is studied. The axial velocity and Fourier harmonic component C7 of flow field on propeller disk of model SubB is computed.The distribution of stream lines from the boot of strut is presented.Computed results demonstrate that the installation manner that the upside model is supported by two thin aerofoil struts is rational.Secondly,the flow fields of SUBOFF (bare hull+fairwater,bare hull+stem appendages) are numerically predicted with five turbulence models.The calculated results are compared with experimental measured data,so the prediction accuracy of different turbulence models are researched.Finally,The effect of Reynolds number on the flow around submarine SUBOFF is studied.The flow fields of SUBOFF at different Reynolds number...更多s are numerically simulated.Then the variation of non-dimensional axial velocity profiles,the wake flow contours,the boundary layer thicknesses and the vortex distributions at the root of appendages along with Reynolds number are analyzed in details.  还原

【论文关键词】 计算流体动力学; 潜艇; 流场; 支杆; 雷诺数效应
【英文论文关键词】 computational fluid dynamics; submarine; flow field; strut; Reynolds number effect

TAG: 张楠 马丽君 沈泓萃 姚惠之 雷诺数
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