The drag reduction of riblet biomimetic non - smooth surface is given out by numerical simulation with cfx . through analysis of velocity vector field and velocity fluctuation this article probe into drag reduction mechanism of unsmooth surface . through analysis of behavior of single microbubble and turbulent kinetic energy this article indicate drag reduction mechanism of microbuble 对仿生非光滑表面减阻机理,采用流体力学分析软件cfx进行了数值模拟,通过对速度场、剪切应力、涡量的计算结果进行分析,得出了仿生非光滑表面减阻几种主要原因。
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In this paper , a theoretical investigation of the drag reduction for underwater submarine by riblet biomimetic non - smooth surface and microbubble carried out , the prime mechanism of two drag reduction technology is open out , and provide theoretical foundation for engineering , which proved efficiency of thruster 粘性摩擦阻力在低速前进时对航行器的阻力起主导作用,而在高速航行时压差阻力是主要的,因此在设计当中综合考虑了两方面因素,使表面结构具有双重减阻特性。
