Flow Noise Calculation With the Viscous Acoustic Splitting Method on Curvilinear Meshes

LIU Cong-wei; WU Fang-liang; LI Huan; CHEN Can; LI Peng

doi:10.3879/j.issn.1000-0887.2016.04.003

Volume 37 Issue 4

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Article Navigation > Applied Mathematics and Mechanics > 2016 > 37(4): 352-362

LIU Cong-wei, WU Fang-liang, LI Huan, CHEN Can, LI Peng. Flow Noise Calculation With the Viscous Acoustic Splitting Method on Curvilinear Meshes[J]. Applied Mathematics and Mechanics, 2016, 37(4): 352-362. doi: 10.3879/j.issn.1000-0887.2016.04.003

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Flow Noise Calculation With the Viscous Acoustic Splitting Method on Curvilinear Meshes

doi: 10.3879/j.issn.1000-0887.2016.04.003

China Ship Development & Design Center, Wuhan 430064, P.R.China

Received Date: 2015-11-25
Rev Recd Date: 2016-01-09
Publish Date: 2016-04-15

Abstract

Abstract

The viscous acoustic splitting method on curvilinear meshes was developed for hydrodynamic noise calculation related to the interaction between a stationary cylinder and sound waves as well as vortex waves in flow field. The 7-point dispersion-relation-preserving (DRP) difference scheme coupled with the classical 4th-order Runge-Kutta scheme, was implemented to solve the governing equations for the simulation of hydroacoustic phenomena. The propagating acoustic pulse reflected by the stationary cylinder was computed and compared with the theoretical results to demonstrate the validity of the calculation strategy. The flow noise generated by the vortex in inhomogeneous water flow and the interaction beteen the vortex and the cylinder were studied to analyze the effects of the vortex core size and the incoming flow velocity on the acoustic filed. The work lays a foundation for the precise calculation of hydrodynamic noise in flow past immersed bodies.
- incompressible flow,
- curvilinear mesh,
- flow noise,
- viscous acoustic splitting method,
- hydrodynamic noise

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References(23)

References

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