摘要
通过求解瞬态雷诺时均方程和网格变形方程,实现了全附体潜艇平面运动机构试验(PMM)的虚拟仿真,得到潜艇模型所受的水动力分量随时间的变化曲线,依据线性理论求取水动力系数,并与试验值以及直线拖曳试验或回转试验的数值计算结果进行对比.结果显示:PMM数值试验所求得的水动力系数与试验值吻合良好,其中,惯性类系数求解精度较高,除个别系数外,误差都在8%以内.而粘性类系数求解精度不如直线拖曳试验(ORT)或回转试验(RAT)计算精度高,个别系数的计算误差超过了30%.但从数值试验的整体效果来看,PMM数值试验计算精度达到了工程应用的要求.
The experiment of planar-motion-mechanism （PMM） was numerical simulated by solving transient RANS equation as well as mesh deformation equation, the hydrodynamics force of the sub- marine varied with time was monitored to calculate the hydrodynamics coefficients according to linear theory, and then compared with experimental data as well as the results from ORT or RAT numerical simulation. The results indicated that. hydrodynamics coefficients from the PMM numerical simula- tion fit well with the experimental data, among which, inertia coefficients were more accurate than viscous ones, except for several ones, the errors were belong 8 ~ ~ although, viscous coefficients were less accurate than that from ORT or RAT numerical simulation, several errors even reached 30%. But the whole effect of PMM numerical simulation was good enough to satisfy the engineering demands.
出处
《武汉理工大学学报（交通科学与工程版）》
2013年第2期420-424,共5页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国防科研项目资助
关键词
网格变形
潜艇操纵性
水动力系数
平面运动机构
mesh deformation
submarine maneuverability
hydrodynamics coefficient
planar-motion- mechanism
