Computation of noise radiated by a mixing layer using the linearized Euler equations

被引：1

作者：

Bogey, C ^{[1
]}

Bailly, C ^{[1
]}

Juvé, D ^{[1
]}

机构：

[1] Ecole Cent Lyon, UMR CNRS 5509, LMFA, F-69131 Ecully, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE B-MECANIQUE PHYSIQUE ASTRONOMIE | 2000年 / 328卷 / 04期

关键词：

computational aeroacoustics (CAA); linearized Euler's equations (LEE); acoustic source terms; mixing layer;

D O I：

10.1016/S1287-4620(00)00130-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The noise radiated by a mixing layer is computed by an hybrid approach using linearized Euler's equations (LEE) as a wave operator. The acoustic source terms are obtained by substituting the aerodynamic fluctuating velocity field computed by the Large Eddy Simulation (LES) method into the right-hand side of the LEE. The radiated sound field as calculated in this way is in good agreement with the direct calculation obtained by LES. This study provides support to the validity of the acoustic analogy based on the LEE, both for the noise source terms and the mean flow effects on sound propagation. (C) 2000 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

引用

页码：341 / 347

页数：7

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