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Simulation of Propagating Acoustic Wavefronts with Random Sound Speed

Published online by Cambridge University Press:  03 June 2015

Sheri L. Martinelli
Sheri L. Martinelli*
Affiliation:
Undersea Warfare Weapons, Vehicles, and Defensive Systems Department, Naval Undersea Warfare Center, Newport, Rhode Island 02841, USA
*
*Corresponding author.Email:sherimartinelli@alumni.brown.edu
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Abstract

A method for simulating acoustic wavefronts propagating under random sound speed conditions is presented. The approach applies a level set method to solve the Eikonal equation of high frequency acoustics for surfaces of constant phase, instead of tracing rays. The Lagrangian nature often makes full-field ray solutions difficult to reconstruct. The level set method captures multiple-valued solutions on a fixed grid. It is straightforward to represent other sources of uncertainty in the input data using this model, which has an advantage over Monte Carlo approaches in that it yields an expression for the solution as a function of random variables.

Keywords

60H3565M7065C20Level set methodwavefront methodshigh-frequency acoustic propagationstochastic collocation

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Type
Research Article
Information
Communications in Computational Physics , Volume 16 , Issue 4 , October 2014, pp. 1081 - 1101
Copyright
Copyright © Global Science Press Limited 2014

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