水下航行器燃烧反应器吸液芯设计方法研究

Design method of wick in combustion reactor of unmanned underwater vehicle

为解决无人水下航行器燃烧反应器的吸液芯设计难题,该文根据燃烧理论及毛细力学理论,提出了吸液芯的设计计算方法。通过仿真计算,研究了吸液芯结构参数与通过吸液芯的热流密度的关系。结果表明,吸液芯热流密度随丝网目数增加先增大后减小,Li液上升过程中黏性压损随丝网目数增加而增大,Li液上升的有效高度随吸液芯热流密度的增加而减小。该方法可为吸液芯设计提供参考,缩短试验进程。

In order to solve the designing difficulty of the wick in the combustion reactor of the unmanned underwater vehicle,the designing method is proposed based on the theory of combustion and the capillary mechanics. The correlation between the wick structure parameters and the heat flux through the wick is obtained by simulation. The results show that the heat flux through the wick increases first and then decreases when the number of wire mesh rises. The pressure loss of the Li along the wick gets higher when the wire mesh number increases. The height of the Li in the wick declines when the heat flux through the wick gets intensive. The model is helpful for the wick design and can save the test time.