Shock Wave Reflections in Pseudo-Steady Flows

Ben‐Dor, G.

doi:10.1007/978-1-4757-4279-4_2

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2015

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“…2, which indicates a merging of the direct and reflected waves consistent with Mach stem formation. 17 This is also the case at 152 m, which is not shown. For our purposes, the creation of a Mach stem in the far field appears to approximately double the peak pressure; further analysis is beyond the scope of this Letter.…”

Section: Results and Analysismentioning

confidence: 82%

Outdoor measurements of spherical acoustic shock decay

Young

Gee

Neilsen

et al. 2015

The Journal of the Acoustical Society of America

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Prior anechoic measurements of a small acetylene-oxygen balloon explosion were used to study spherical weak-shock decay over short ranges [Muhlestein et al., J. Acoust. Soc. Am. 131, 2422–2430 (2012)]. Here, longer-range measurements conducted at the Bonneville Salt Flats with a larger balloon are described. Waveform and spectral characteristics and comparisons of the peak pressure decay with an analytical weak-shock model are presented. Weak shocks persist to at least 305 m, with an amplitude decay that is predicted reasonably well using the model. Deviations are discussed in the context of atmospheric effects and nonlinear ground reflections.

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Section: Results and Analysismentioning

confidence: 82%