TY - GEN
T1 - Sonic boom diffraction around buildings using a finite difference time domain approach
AU - Cho, Sang I.
AU - Sparrow, Victor W.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84870047400
SN - 9781605605401
T3 - Institute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
SP - 583
EP - 590
BT - Institute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
T2 - 23rd National Conference on Noise Control Engineering, NOISE-CON 2008 and 3rd Sound Quality Symposium, SQS 2008
Y2 - 28 July 2008 through 31 July 2008
ER -