NAVIER-STOKES COMPUTATIONS OF CAVITY AEROACOUSTICS WITH SUPPRESSION DEVICES

被引：22

作者：

BAYSAL, O

YEN, GW

FOULADI, K

机构：

[1] School of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA

来源：

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 1994年 / 116卷 / 01期

关键词：

Cavitation - Compressible flow - Computer simulation - Fluid dynamics - Mathematical models - Transonic flow - Turbulent flow - Unsteady flow - Vortex flow;

D O I：

10.1115/1.2930385

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Effectiveness of two devices to suppress the cavity acoustics was computationally investigated. Two dimensional, computational simulations were performed for the transonic, turbulent flows past a cavity, which was first equipped with a rear face ramp and then with a spoiler. The Reynolds-averaged, unsteady, compressible, full Navier-Stokes equations were solved time accurately by a second-order accurate, implicit, upwind, finite-volume method The effect of turbulence was included through the Baldwin-Lomax model with modifications for the multiple-wall effects and for the highly vortical flow with a shear layer. The results included instantaneous and time-averaged flow properties, and time-series analyses of the pressure inside the cavity, which compared favorably with the available experimental data. These results were also contrasted with the computed aeroacoustics of the same cavity (length-to-depth ratio of 4.5), but without a device, to demonstrate the suppression effectiveness.

引用

页码：105 / 112

页数：8

共 25 条

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