RANS and DES Turbulence Model Predictions of Noise on the M219 Cavity at M=0.85

Abstract

Two rectangular cavity configurations, with and without bay doors, at Mach 0.85 are investigated with the objective of assessing the ability of 3D CFD with advanced turbulence modelling to predict narrowband and broadband flow noise. A non-linear, two-equation, eddy-viscosity model run in unsteady mode (URANS) is compared with Detached Eddy Simulation (DES) on a cavity with a L/D ratio of 5. In a thorough evaluation, comparisons are made between DES variants published in the literature, namely Spalart-Allmaras, k-ε and k-ω-SST. We also assess the effect on the noise spectra of using different CFD prediction time-samples of approximately 100 flow passes compared with 250 flow passes. Detailed experimental data for both cavity configurations provide a valuable opportunity to compare the predicted spectra at many points along the cavity ceiling and band-limited amplitude along the cavity length. We conclude that for such cavity flows, all DES models perform similarly well and are superior to unsteady RANS due to their inherent ability to resolve broadband structures.

Get full access to this article

View all access options for this article.

References

Henderson

Babcock

and Richards

B. E.

, “Subsonic and transonic transitional cavity flows”, AIAA-2000-1966, June 2000, 6^th AIAA/CEAS Aeroacoustics Conference and Exhibit.

Inagaki

Murata

Kondoh

Abe

, “Numerical Prediction of Fluid-Resonant Oscillation at Low Mach Number”, AIAA Journal Vol.40, No.9, pp1823–1908.

Rossiter

J. E.

, “Wind Tunnel Experiments on the Flow over Rectangular Cavities at Subsonic and Transonic Speeds,” Aeronautical Research Council, Reports and Memoranda 3438, London, 1964.

Shieh

C. M.

and Morris

P. J.

, “Parallel Computational Aeroacoustic Simulation of Turbulent Subsonic Cavity Flow”, AIAA-2000-1914, June 2000, 6^th AIAA/CEAS Aeroacoustics Conference and Exhibit.

Rizzetta

D.P.

and Miguel

R. V.

, “Large Eddy Simulation of Supersonic Cavity Flowfields Including Flow Control”, AIAA-2002-2853, June 2002, 8^th AIAA/CEAS Aeroacoustics Conference and Exhibit.

Mendonça

Allen

de Charentenay

Lewis

, “Towards Understanding LES and DES for Industrial Aeroacoustics Predictions”, International Workshop on LES for Acoustics, DLR Göttingen, Germany, 7–8^th October 2002.

Spalart

P.R.

Jou

W.H.

Strelets

and Allmaras

S.R.

, “Comments on the Feasibility of LES for Wings, and on a Hybrid RANS/LES Approach”, First AFOSR International Conference on DNA/LES.

Henshaw

M.J de C.

, “M219 Cavity case in Verification and Validation Data for Computational Unsteady Aerodynamics”, RTO-TR-26, AC/323(AVT)TP/19, October 2000.

Ross

J.A.

, Private Communications, QinetiQ, Bedford, MK41 6AE, UK.

10.

Travin

Shur

Strelets

Spalart

, “Physical and Numerical Upgrades in the Detached-Eddy Simulation of Complex Turbulent Flows”, published in Advances in LES of Complex Flows, pp239–254, eds. Friedrich

and Rodi

11.

Mendonça

Allen

de Charentenay

Kirkham

, “CFD Prediction of Narrowband and Broadband Cavity Acoustics at M=0.85”, AIAA-2003-3033, May 2003, 9^th AIAA/CEAS Aeroacoustics Conference and Exhibit.

12.

The pro-am User Manual, January 2003, adapco, New York.

13.

STAR-CD Version 3.15, User Guide and Methodology Manuals, 2001, Computational Dynamics Limited, London, UK.

14.

Issa

R. I.

Gosman

A.D.

Watkins

A.P.

, “The Computation of Compressible and Incompressible Recirculating Flows by a Non-Iterative Implicit Scheme”, J.Comp.Phys. No.62, pp.66–82.

15.

Comte-Bellot

Corrsin

, “Simple Eulerian time-correlation of full- and narrowband velocity signals in grid-generated ‘isotropic’ turbulence”, J. Fluid Mech. 48(2), pp273–337.

16.

Allen

Mendonça

, “DES Validations of Cavity Acoustics over the Subsonic to Supersonic Range”, AIAA-2004-2862, May 2004, 10^th AIAA/CEAS Aeroacoustics Conference and Exhibit.