Sonic boom diffraction around buildings using a finite difference time domain approach

Sang I. Cho, Victor W. Sparrow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A finite difference time domain (FDTD) approach is used to model the temporally and spatially dependent pressure loading on a rigid structure due to an incident N-wave sonic boom. Because of the low amplitude of the incident sonic boom at the ground level, linear acoustic theory can be applied in modeling the boom-structure interaction. Analytically one expects strong diffraction due to building corners and pressure doubling near rigid walls, and these phenomena have been confirmed in the simulation. The dimensions of a residential building have been used in the FDTD model. It is intended that this work will be extended in the future by using more realistic geometrical models. Matching geometries in the future should enable a quantitative validation by a direct comparison of the simulation results to experimental data obtained during NASA flight testing at Edwards, CA during the summers of 2006 and 2007.

Original languageEnglish (US)
Title of host publicationInstitute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
Pages583-590
Number of pages8
StatePublished - Dec 1 2008
Event23rd National Conference on Noise Control Engineering, NOISE-CON 2008 and 3rd Sound Quality Symposium, SQS 2008 - Dearborn, MI, United States
Duration: Jul 28 2008Jul 31 2008

Publication series

NameInstitute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
Volume2

Other

Other23rd National Conference on Noise Control Engineering, NOISE-CON 2008 and 3rd Sound Quality Symposium, SQS 2008
CountryUnited States
CityDearborn, MI
Period7/28/087/31/08

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All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Cho, S. I., & Sparrow, V. W. (2008). Sonic boom diffraction around buildings using a finite difference time domain approach. In Institute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08 (pp. 583-590). (Institute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08; Vol. 2).