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Modified numerical model for simulating fluid-filled structure response to underwater explosion with cavitation

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Abstract

In this paper, a numerical method is established to analyze the response of fluid-filled structure to underwater explosion with cavitation and the validation of the method is illustrated. In the present implementation, the second-order doubly asymptotic approximation (DAA2) other than curved wave approximation (CWA) is used to simulate non-reflecting boundary. Based on the method, the difference between DAA2 non-reflecting boundary and CWA non-reflecting boundary is investigated; then, the influence of internal fluid volume and the influence of cavitation on dynamic response of spherical shell are analyzed. Compared with CWA non-reflecting boundary, DAA2 non-reflecting boundary treats added mass effects better. When the internal fluid is full, the displacement and velocity of spherical shell decrease, but, when the internal fluid is half, the displacement and velocity of spherical shell increase. The effect of cavitation is more obvious at the trailing point than at the leading point of spherical shell.

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Authors and Affiliations

  1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin, 150001, China

    Wei Xiao  (肖 巍) & A-man Zhang  (张阿漫)

  2. Unit 92857 of PLA, Beijing, 100161, China

    Yu Wang  (汪 玉)

Authors
  1. Wei Xiao  (肖 巍)
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  2. A-man Zhang  (张阿漫)
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  3. Yu Wang  (汪 玉)
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Corresponding author

Correspondence to A-man Zhang  (张阿漫).

Additional information

Foundation item: the National Security Major Basic Research Program of China (No. 613157), the Outstanding Youth Fund of China (No. 51222904), and the National Natural Science Foundation of China (No. 51279038)

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Xiao, W., Zhang, Am. & Wang, Y. Modified numerical model for simulating fluid-filled structure response to underwater explosion with cavitation. J. Shanghai Jiaotong Univ. (Sci.) 19, 346–353 (2014). https://doi.org/10.1007/s12204-014-1508-4

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  • DOI: https://doi.org/10.1007/s12204-014-1508-4

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