中文摘要：

为充分了解潜艇周围的粘性流场特征,基于STAR-CCM＋仿真软件对SUBOFF全附体模型的尾流场进行了数值模拟。通过将数值模拟结果与试验结果进行比较,系统分析了棱柱层网格的划分与湍流模型的选取对计算结果的影响。结果表明：SSTk-ω模型较适合应用在潜艇模型尾流场计算中,并且棱柱层的总厚度不能小于15mm,第一层计算网格节点到表面的无因次距离y＋应在25到170之间。在此基础上,应用滑移网格技术对潜艇尾流场进行数值模拟,通过加密网格和减小时间步长使得轴向伴流分数与整体定常计算值吻合较好。

英文摘要：

Numerical calculation of wake field over SUBOFF submarine with full appendages is made based on STAR-CCM＋.By comparing the computed results with the experimental data,the influence of prism layer mesh and turbulent model on the computed results is analyzed systematically.It shows that,in the numerical calculation on submarine model wake field,the SSTk-ω model is a relatively more suitable turbulent model.The thickness of prism layer mesh is to be equal to or greater than15 mm,and the non-dimensional distance between the first computational mesh node and the model surface needs to be set in the range from 25 to 170.Moreover,numerical calculation of submarine wake field is made by using a sliding mesh.By refining mesh and reducing time step,the axial wake fraction is in good agreement with that computed by steady method.