基于STAR-CCM+的潜艇无动力低速下潜受力仿真

本文以SUBOFF AFF-8全附体潜艇模型为研究对象,对微型潜艇在执行特种任务时以3种速度、8种纵倾角姿态的组合做下潜运动的受力进行仿真。通过改变不同来流速度以模拟潜艇在不同速度下的稳态下潜,得到潜艇8种姿态下以不同速度的阻力和纵倾力矩,从而给潜艇下潜时调节首、尾压载保持受力平衡提供依据;同时进行潜艇在水下直航状态的垂向力系数和纵倾力矩系数仿真验证,结果与试验值对比误差较小。

Simulation analysis of the unpowered dive force with low speed for a submarine based on STAR-CCM+

Taking the SUBOFF AFF-8 fully appended submarine model as the research object, this paper simulates the forces of the micro-submarine when it carries out special missions with a combination of three speeds and eight trim angles.By changing different flow velocity to simulate the steady dive of submarine at different speeds, the dive resistance and trim moment of submarine at different speeds under 8 different stances are obtained, which provides the basis for adjusting ballast at bow and stern to maintain the force balance of submarine when diving;At the same time, the vertical force coefficient and trim moment coefficient of submarine in underwater direct navigation state are simulated and verified.