中文摘要：

边棱音是一种复杂的流体动力学现象，通过数值模拟研究边棱音发声系统在射流不稳定情况下的发声特性。研究了射流速度低于湍流速度的不同流速下，簧片尖端以及两侧的旋涡、压力、速度的分布和压力特性。模拟结果显示：射流具有明显的抖动特性，在簧片两侧形成涡街、压力交替分布，基于出现的现象，初步探讨了簧片振动产生边棱音的机理。

英文摘要：

Edge-tone is a complex fluid dynamic phenomenon. The paper researches the edge-tone phenomenon by numerical simulation which is conducted under the condition of the jet instability, but below turbulence. The distributions of vortex, velocity and pressure as well as the characteristics of the reed at different fluid speeds are studied. Simulation results show that the vortex street and pressure are alternately distributed on both sides of the reeds and the fluid is obviously shaking. Based on the phenomenon, the mechanism of vibrating reeds generating edge-tone is preli minarily discussed.