基于CFD的潜体大攻角水动力系数计算方法研究  

Study on Calculation of Hydrodynamic Coefficients of Submarine's Big Angle of Attack Based on CFD

作　　者：张平[1] 黄海峰[1] 胡坤[1] 赵立业[1] ZHANG Ping;HUANG Hai-feng;HU Kun;ZHAO Li-ye(Navy Submarine Academy,Qingdao Shandong 266199,China)

机构地区：[1]海军潜艇学院,山东青岛266199

出　　处：《计算机仿真》2023年第12期41-45,共5页Computer Simulation

摘　　要：为完善潜体在强机动过程中出现大攻角时的数学运动模型,采用六面体非结构化网格计算了潜体大攻角时的潜体受力情况,并回归得到了潜体水动力系数。通过对潜体主附体结合部、推进器附近区域及围壳、艉操纵面等附体进行局部网格加密,采用流体计算软件,应用SST k-ω两方程模型,分别从潜体计算域大小、网格划分形式、网格数量、湍流模式以及壁面流动处理等方面开展了潜体大攻角水动力数值计算研究,建立了潜体强机动时大攻角水动力数值预报方法,得到的水动力系数与实验数据相比符合较好。In order to improve the mathematical model of submarine at hith angle of attack during strong maneuvers,this paper uses a hexahedral unstructured grid to calculate the force acting on the submerged body at high angles of atack,and regresses the hydrodynamic coefficients of the submerged body.By performing local mesh refinement on the joint of the main and appendages of the submarine,the area near the thruster,and the appendages such as the enclosure and stern control surface,the paper uses fluid calculation software and applies twe-equation SST kw models,focuses on the numerical calculation of hydrodynamic forces at high angles of attack for submerged bodies,inluding the size of the computaional domain,grid division form,number of grids,turbulence mode and wall flow processing.A numerical prediction method for hydrodynamic forces at high angle of attack has been established,which is in good agreement with the experimental data.

关 键 词：流体计算 水动力 攻角 系数 

分 类 号：U661.33[交通运输工程—船舶及航道工程]