NONLINEAR PROPAGATION OF SPHERICALLY DIVERGENT WAVES IN RELAXING MEDIUM: EXPERIMENT AND THEORETICAL MODELING (original) (raw)
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Journal of The Acoustical Society of America, 2002
In previous papers, we have shown that model experiments are successful in simulating the propagation of sonic booms through the atmospheric turbulent boundary layer. The results from the model experiment, pressure wave forms of spark-produced N waves and turbulence characteristics of the plane jet, are used to test various sonic boom models for propagation through turbulence. Both wave form distortion models and rise time prediction models are tested. Pierce's model ͓A. D. Pierce, ''Statistical theory of atmospheric turbulence effects on sonic boom rise times,'' J. Acoust. Soc. Am. 49, 906 -924 ͑1971͔͒ based on the wave front folding mechanism at a caustic yields an accurate prediction for the rise time of the mean wave form after propagation through the turbulence.
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