摘要
为研究AUV从有界流场自航发射到无界流场的运动边界的扰流场,文章采用了三维动态混合网格方法进行数值模拟的策略。混合网格由三菱柱/四面体/六面体网格构成,当AUV运动时,靠近AUV的三菱柱网格随AUV运动,外层是静止的六面体网格,中部的四面体网格随AUV运动而变形或者重构。数值仿真结果给出了不同时刻AUV表面的压力分布、整个航程AUV的阻力系数变化,其值与理论结果吻合。同时研究了直径比对发射管航行的附加质量和阻力系数的影响,这为水下对接AUV提供了有效手段。
A 3-D hybrid dynamic grids method is presented to simulate moving boundary in Autonomous Underwater Vehicle（AUV） swim-out from bounded domain to unbounded domain. The 3-D hybrid grids are composed of prismatic/tetrahedral/hexahedral grids from inner to outer layer respecitvely.With AUV moving the prismatic grids move with AUV, while the hexahedral grids remain stationary. Meanwhile, the tetrahedral grids are deformed or re-meshed according to the motion of AUV. Results from the numerical simulation show that the pressure contour in AUV surface at different times,and the resistant coefficient of AUV at the whole sailing which agrees well with the theory are obtained. The relation between diameter ratio with AUV reistant coefficient and addmass coefficient in tube is also shown, which gives guide for AUV underwater docking to tube.
出处
《船舶力学》
EI
北大核心
2010年第7期717-722,共6页
Journal of Ship Mechanics
基金
机器人学国家重点实验室自主课题(RLZ200810)
作者简介
吴利红（1978-），女，博士生，研究领域：水下机器人水动力分析，多体相对运动数值仿真。
