Nicolas Héron , Christophe Bailly , Sébastien Candel
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引用次数: 1
摘要
我们研究了通过添加二次同轴射流来消除超音速射流辐射的马赫波。噪声预测是基于湍流模型封闭的RANS (Reynolds average Navier-Stokes)方程的数值解和声源的统计描述。这种方法使我们能够在数值上重现最近实验中获得的结果，这些实验的目的是找到使声辐射最小化的平均流配置。
Modélisation du rayonnement acoustique de jets coaxiaux supersoniques
We examine the elimination of the Mach waves radiated by a supersonic jet by the addition of a secondary coaxial jet. The noise prediction is based on a numerical solution of the RANS (Reynolds Averaged Navier–Stokes) equations closed by a turbulence model, and a statistical description of acoustic sources. This method allows us to numerically reproduce results obtained in recent experiments where the aim was to find the mean flow configuration that minimizes acoustic radiation.
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