A finite difference numerical model for the propagation of finite amplitude acoustical blast waves outdoors over hard and porous surfaces

This study has concerned the propagation of finite amplitude, i.e. weakly non-linear, acoustical blast waves from explosions over hard and porous media models of outdoor ground surfaces. The nonlinear acoustic propagation effects require a numerical solution in the time domain. To model a porous ground surface, which in the frequency domain exhibits a finite impedance, the linear phenomenological porous model of Morse and Ingard was used. The phenomenological equations are solved in the time domain for coupling with the time domain propagation solution in the air.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Sparrow, Victor Ward

Contributors dc:contributor

• Franke, Steven J.

• Engineering, Electronics and Electrical
• Physics, Acoustics

Statement dc:rights

• Copyright 1990 Sparrow, Victor Ward

Language dc:language

eng

Identifier

AAI9026325
(UMI)AAI9026325

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19608