Suppression Effect of Jet Flow on Aerodynamic Noise of 3D Cavity

Abstract:

The structure of cavity flow field with high mach number is very complex, in which pressure and velocity pulsate seriously, leading a seriously noise about almost 170dB. The noise poses a great threaten to the safety of the missile in the cavity and the structure of the cavity. The active control method (jet flow) by applying the CFD technology based on Scale-Adaptive Simulation (SAS) model developed from two-equation SST turbulent model is used to simulate the changing of the dynamic noise in the standard cavity M219(the ratio of the length to the depth is 5), and studied the flow character, flow field structure and noise mechanism. First, the accuracy of the noise prediction method is validated. Base on above-mentioned method, the suppression effect on the noise in the cavity of jet flow is analyzed and the conclusion is that jet flow has a great influence on the aerodynamic noise suppression in the cavity.

• Periodical: Applied Mechanics and Materials (Volumes 444-445)
• Pages: 588-595
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.444-445.588
• Online since: October 2013
• Authors: Pei Xun Yu, Jun Qiang Bai, Bo Zhi Guo, Xiao Han, Shan Shan Han
• Keywords: Aerodynamic Noise, Jet Flow, M219 Cavity, Scale-Adaptive Simulation Model

References

[1] N Taborda, D Bray, Passive Control of Cavity Resonances in Tandern Configurations. AIAA-2001-2770.

[2] X Zhang and A Rona, An Observation of Pressure Wave around a Shallow Cavity, Journal of Sound and Vibration, 1998, 214(4): 771-778.

DOI: 10.1006/jsvi.1998.1635

[3] Lai H X, A Conceptual Study of Cavity Aeroacoustics Control Using Porous Media Inserts, Flow Turbulence Combust, 2008, 80: 375-391.

DOI: 10.1007/s10494-007-9129-8

[4] Rowley C W, Cavity Flow Control Simulations and Experiments, AIAA-2005-0292.

[5] F. R. Menter. Y. Egorov, The Scale-Adaptive Simulation Method for Unsteady Turbulent Flow Predictions. Flow Turbulence Combust, 2010, 85: 113-138.

DOI: 10.1007/s10494-010-9264-5

[6] Xiaoxian Chen, Neil D. Sandham, Cavity Flow Noise Predictions for MSTARR DARP, (2007).

[7] Werner Haase, DESider - A European Effort on Hybrid RANS-LES Modelling, Results of the European-Union Funded Project, 2004-(2007).

[8] Chang K S, Hybrid RANS/LES Simulation of Deep Cavity Flow, AIAA-2004-53.

[9] Rubio G, Numerical Study of Noise Generation Mechanisms in Rectangular Cavities, Proceedings of the Euromech Colloquium 467 Turbulent Flow and Noise Generation, (2005).

[10] Rowley C W, Control of Forced and Self-sustained Oscillations in the Flow Past a Cavity, AIAA-2003-0008.

[11] Hamed A, Numerical Simulation of Fluidic Control for Transonic Cavity Flows, AIAA-2004-429.