基于再附修正ASST模型的SUBOFF裸艇体水动力特性数值模拟  

Numerical simulation of flow around the SUBOFF bare hull basedon ASST model with a reattach correction

作　　者：齐越洋 祝环宇 韩盼盼 尤云祥[1,2] 邱小平 马乔 吴凯健 QI Yueyang;ZHU Huanyu;HAN Panpan;YOU Yunxiang;QIU Xiaoping;MA Qiao;WU Kaijian(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Yazhou Bay Institute of Deepsea Science and Technology,Shanghai Jiao Tong University,Sanya 572000,China;Shanghai Junyu Information Technology Limited,Shanghai 201800,China)

机构地区：[1]上海交通大学海洋工程国家重点试验室,上海200240 [2]上海交通大学三亚崖州湾深海科技研究院,三亚572000 [3]上海君昱信息科技有限公司,上海201800

出　　处：《江苏科技大学学报(自然科学版)》2025年第1期1-7,共7页Journal of Jiangsu University of Science and Technology:Natural Science Edition

摘　　要：RANS是工程中常用的CFD数值模拟模型,文中基于该模型对SUBOFF裸艇体的水动力特性开展数值模拟研究.传统SST(shear stress transport model)湍流模型采用了线性涡黏假设,难以描述复杂流场的各向异性流动现象.另外,传统SST模型对分离点的预测还可能出现延迟,使阻力预测值偏小.针对传统SST湍流模型的缺陷,提出使用各向异性的ASST(anisotropic shear stress transport)湍流模型及其再附修正来研究SUBOFF裸艇体的数值模拟计算问题,并对SST、SST(Reattach)、ASST及ASST(Reattach)4种湍流模型进行了比较研究.结果表明,相较于传统SST模型,ASST模型在预测SUBOFF裸艇的阻力上具有更高精确度,再附修正可有效克服阻力预测值偏小的问题,ASST(Reattach)模型在4种湍流模型中阻力预报性能最优.另外,针对不同站位的轴向及径向平均速度分布特性问题,4种湍流模型均能够取得与模型试验一致的数值模拟结果.RANS is a CFD numerical simulation model commonly used in engineering.Based on this model,this paper conducts numerical simulation research on the hydrodynamic characteristics of the SUBOFF bare hull.The traditional SST turbulence model adopts the linear eddy viscosity assumption,which is difficult to describe the anisotropic flow phenomenon for complex flow fields.In addition,the prediction of the separation point by the traditional SST model may be delayed,resulting in underestimations for the resistance prediction.In view of these two shortcomings of the traditional SST turbulence model,we propose to use the anisotropic ASST turbulence model and its additional modifications to study the numerical simulation problems of the SUBOFF bare hull,and gives comparative assessments of the capabilities for the four turbulence models including SST,SST(Reattach),ASST and ASST(Reattach).The results show that compared with the traditional SST model,the ASST model has higher accuracy in predicting the resistance of the SUBOFF bare hull.The Reattach correction can effectively overcome the underestimation defect for the resistance prediction.The ASST(Reattach)model has the best performance among the four turbulence models.In addition,regarding the mean axial and radial velocity distributions characteristics at different stations,numerical simulation results based on the four turbulence models are consistent with the model experiments.

关 键 词：SUBOFF裸艇体 SST模型 SST(Reattach)模型 ASST模型 ASST(Reattach)模型 

分 类 号：U661.1[交通运输工程—船舶及航道工程] O352[交通运输工程—船舶与海洋工程]