基于SST湍流模型的二维操纵面空化流场研究

Research on cavitation flow field of two dimensions control surface based on SST turbulence model

操纵面是安装在超空泡航行器尾端的关键部件,它的基本功能是提供稳定力矩和操纵力矩。文章基于k-ω模型的SST(剪切应力输运)湍流模型,对典型二维操纵面的空化流动进行数值模拟,根据空化流仿真计算的结果,得到了超空泡外形、阻力特性以及升力特性的变化规律,并与水洞实验进行对比。研究结果表明,仿真结果能够很好地与水洞实验保持一致,说明所采用的湍流模型和数值方法能够准确预报空化流问题,为进一步研究空化流问题提供了一定的参考依据。

Control surface is key component of supercavitating vehicle. Its basic function is that provides stable moment and steering moment. This paper based on SST（Shear Stress Transport）turbulence model of k-comodel, the numerical simulation of cavititation flows about two dimensions control surface. According to the simulation results of the cavitation flow, the rules between cavitation shape, drag, and lift were obtained. The results showed that the simulation result was consistent with the empirical formulas, and description of the turbulence model and numerical methods to accurately forecast flow cavitation problems, which provided the reference for further investigating the cavitation problem.