马赫数
喷射噪声
超音速
喷射(流体)
噪音(视频)
指向性
声学
阻力发散马赫数
物理
空气声学
机械
马赫波
跨音速
计算机科学
空气动力学
声压
电信
图像(数学)
人工智能
天线(收音机)
作者
Taku Nonomura,Kozo Fujii
标识
DOI:10.1115/fedsm2007-37539
摘要
In this study, aero-acoustic noise from super-sonic jet plume is computationally investigated. Three-dimensional Navier-Stokes equations are solved with seventh order weighted compact non-linear scheme and total validation diminishing Runge-Kutta time integration scheme. At first, the noise from Mach 2.0 ideally expanded super-sonic jet is computed and validated with the past experimental study. Then the noises from various Mach number (2.0–3.5) ideally expanded jet plumes are computed. Noise source positions, directivity and convective Mach numbers are discussed.
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