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Experimental studies and simple numerical modeling of underwater electric discharges

Abstract : At present, underwater electric pulsed discharges are used in a wide range of modern applications. During the development of a system for generating underwater acoustic pressure pulses, a numerical model is an essential tool for guiding the design and interpreting the data. Developing a complex one-dimensional numerical code, like those presented in the literature, requires a substantial dedicated effort. Unfortunately, previous work trying to use simple and elegant theoretical models developed many decades ago reported a fundamental issue, apparently related to the input data. The present work performs a detailed analysis of the real meaning of the voltage measured across an underwater discharge and clarifies the correct way the power input to a simple two-phase model should be calculated. Based on accurate measurements, a phenomenological methodology to obtain the input data is demonstrated, with theoretical predictions obtained from the simple two-phase model being successfully compared with the experimental evidence obtained from both the present work as well as from other reliable data presented in the literature.
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https://hal-univ-pau.archives-ouvertes.fr/hal-03653532
Contributor : Antoine SILVESTRE de FERRON Connect in order to contact the contributor
Submitted on : Wednesday, April 27, 2022 - 7:19:57 PM
Last modification on : Thursday, May 12, 2022 - 12:55:31 PM

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Thanasi Frost, Bucur Novac, Peter Senior, Laurent Pecastaing, Thierry Reess. Experimental studies and simple numerical modeling of underwater electric discharges. Journal of the Acoustical Society of America, Acoustical Society of America, 2022, 151 (5), pp.2844-2855. ⟨10.1121/10.0010288⟩. ⟨hal-03653532⟩

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