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http://dx.doi.org/10.5050/KSNVN.2009.19.10.1053

Numerical Study of Sound Generation Mechanism by a Blast Wave  

Bin, Jong-Hoon (플로리다 주립대학 수학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.19, no.10, 2009 , pp. 1053-1061 More about this Journal
Abstract
The goal of this paper is to investigate the generation characteristics of the main impulsive noise sources generated by the supersonic flow discharging from a muzzle. For this, this paper investigates two fundamental mechanisms to sound generation in shocked flows: shock motion and shock deformation. Shock motion is modeled numerically by examining the interaction of a sound wave with a shock. The numerical approach is validated by comparison with results obtained by linear theory for a small disturbance case. Shock deformations are modeled numerically by examining the interaction of a vortex ring with a blast wave. A numerical approach of a dispersion-relation-preserving(DRP) scheme is used to investigate the sound generation and propagation by their interactions in near-field.
Keywords
Impulsive Noise; Blast Wave; Dispersion-relation-preserving Method; Dipole; Precursor Wave; Gun Muzzle Noise;
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Times Cited By KSCI : 2  (Citation Analysis)
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