For the mechanics analysis of the underwater vehicle with damping plate, analyze the plate mechanics without wall and wall in unbounded flow field. Firstly, establish the expression of the force and moment of the damper on the whole body. Secondly, through the simulation, analyze the flow field around the damping plate, it is concluded that the moment of the fluid subjected to the damping plate does not show a simple linear relationship with the opening time. At last, the numerical simulation of the underwater vehicle with damping plate and without damping plate is carried out by using FLUENT software. The results show that the axial additional mass of underwater vehicle and reduces its tail flow rate. The above work provides a way for the damping plate to analyze the mechanical effects of the underwater vehicle.%为更加准确地分析阻尼板对航行体产生的力学影响,分析无界流场状态下无壁面与有壁面时的平板力学.首先建立阻尼板对航行体整体的作用力和力矩关系表达式;其次通过仿真分析阻尼板周边的流场变化,得出阻尼板受到的流体作用力矩随张开时间并不呈简单的线性关系;最后利用FLUENT软件对带阻尼板与不带阻尼板的水下航行体进行数值模拟.结果表明:阻尼板的存在会使水下航行体的轴向附加质量增加并且尾部流速降低,可为阻尼板对水下航行体的力学影响作用分析提供一种思路和方法.
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