旋涡哨的改进及数值模拟分析  

Improvement and numerical simulation analysis of vortex whistle

作　　者：何倩 杨芬 张明铎[1] 郑宝宁 HE Qian YANG Fen ZHANG Mingduo ZHENG Baoning(College of Physics and Information Technology, Shaanxi Key Laboratory of Uhrasonics, Shaanxi Normal University, Xi＇an 710062, China)

机构地区：[1]陕西师范大学物理学与信息技术学院/陕西省超声学重点实验室,陕西西安710062

出　　处：《西北大学学报（自然科学版）》2017年第5期654-658,共5页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(11474191)

摘　　要：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%.

关 键 词：旋涡哨 湍动能 数值模拟 

分 类 号：O426.1[理学—声学]