HU Yao-jun, WU Sheng-ju*, JING xing,XU hao
(Applied Acoustics Institute, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
Using computational fluid dynamics (CFD) software, the effect of nozzle geometry in cantilever reed whistle on parameters such as velocity and turbulence intensity are calculated. Numerical simulation results showed that the nozzle contraction angle and slit thickness have significant influence on export jet velocity, the shape of liquid piece and turbulence intensity . From 15° to 30° of angle contraction the larger jet velocity is obtained, the turbulence intensity become lesser and jet center axis isn't formed vortex. But within free boundary two strings become reverse vortex, which influence on vibration force and vibration voice.
KeyWords:
reeds whistle; jet; numerical calculation
