全附体潜艇模型回转运动流场数值模拟  

Numerical simulation of a fully appended submarine model in steady turn

作　　者：曹留帅[1] 朱军[1] 黄昆仑[1] 葛义军[1] 王智宇[1] 

机构地区：[1]海军工程大学舰船工程系,武汉430033

出　　处：《海军工程大学学报》2015年第4期17-20,共4页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(51179199)

摘　　要：为研究潜艇的回转运动,在RANS方程中引入旋转坐标系科氏力和艇体惯性离心力,并采用分块结构化网格技术,对全附体潜艇模型回转运动的流场进行了CFD数值模拟。首先,推导了旋转坐标系下流场计算的控制方程,给出了科氏力和艇体惯性离心力的表达式,并将其引入到动量方程中;然后,采用RNGk-ε湍流模型以及用户自定义函数方法设置了计算边界条件,数值模拟了全附体潜艇模型(DRAPA SUBOFF)的操舵定常回转运动流场;最后,分析了所计算流场的速度、压力和涡的分布及形态,分析表明计算结果符合其规律性。To investigate the turning motion of a submarine, this paper makes a numerical simulation of viscous flow past a fully-appended submarine model in steady turn by solving the Reynolds Avraged Navier-Stokes （RANS） equations. The problem of rotation is solved via the introduction of rotating coordinate system. The Coriolis force and centrifugal force obtained from computation in a body-fixed rotating frame of reference are added to the momentum equations as source terms. The whole compu- tational domain is divided into two parts： base domain and outer domain, which are both discredited by hexahedral elements. Velocities of inlets are coded to give the correct magnitude and direction as required. The RNG turbulence model is used for the numerical simulation of the steady turn motion of DRAPA SUBOFF fully-appended model. The analysis of the velocity, pressure distribution and the shedding of vortices in the computed flow field shows that the proposed method is feasible and effective.

关 键 词：潜艇 旋转流场 数值模拟 科氏力 离心力 

分 类 号：U661.33[交通运输工程—船舶及航道工程]