旋涡哨的改进及数值模拟分析

Improvement and numerical simulation analysis of vortex whistle

文中提出一种新型旋涡哨,并对传统旋涡哨和新型旋涡哨进行模拟分析。结果表明:与传统旋涡哨相比,新型旋涡哨的流体流速、湍流强度、湍动能以及声功率密度等都有显著提高,最大声功率密度提高150%以上。

In this paper,a new type of vortex whistle is put forward. Traditional vortex whistle and the new type vortex whistle are simulated and analyzed. The results show that the fluid velocity,turbulence intensity,turbulence kinetic energy and acoustic power density of the new type vortex whistle are significantly improved compared with traditional vortex whistle,and the acoustic power density is increased by more than 150%.