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.
XIAO Wei1 (肖巍), ZHANG A-man1* (张阿漫), WANG Yu2 (汪玉)
. Modified Numerical Model for Simulating Fluid-Filled Structure Response to Underwater Explosion with Cavitation[J]. Journal of Shanghai Jiaotong University(Science), 2014
, 19(3)
: 346
-353
.
DOI: 10.1007/s12204-014-1508-4
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