Explosion simulation including a coupled fluid-structure interaction problem using Smoothed Particle Hydrodynamics

Wataru Kobashi; Akiko Matsuo; Kenji Murata; Hirohisa Noguchi; Yukio Kato

Explosion simulation including a coupled fluid-structure interaction problem using Smoothed Particle Hydrodynamics

Wataru Kobashi, Akiko Matsuo, Kenji Murata, Hirohisa Noguchi, Yukio Kato

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

The Smoothed Particle Hydrodynamics (SPH) method is used to simulate the dynamics of the underwater explosion (UNDEX) within the steel vessel. Three kinds of simulations, the propagation of underwater shock wave generated by the experimental data, underwater shock wave-metal interaction, and detonation gas-water interaction are performed and are compared with the experiment to provide confidence in numerical modeling. These simulations clarified that the interaction between steel vessel and water is well simulated, but the reproduction of expansions of water and detonation gas are difficult to simulate because the quick increase of volume per one particle cause the oscillation at detonation gas-water interface. As a result, the simulated deformation of steel vessel caused by UNDEX becomes smaller than that of the experiment. The present simulations clarify the advantages and difficulties of SPH method reproducing the damage of explosion including the coupled fluid-structure interaction.

Original language	English
Title of host publication	Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
Pages	2301-2309
Number of pages	9
Publication status	Published - 2006 Dec 1
Event	44th AIAA Aerospace Sciences Meeting 2006 - Reno, NV, United States Duration: 2006 Jan 9 → 2006 Jan 12

Publication series

Name	Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
Volume	4

Other

Other	44th AIAA Aerospace Sciences Meeting 2006
Country	United States
City	Reno, NV
Period	06/1/9 → 06/1/12

ASJC Scopus subject areas

Space and Planetary Science
Aerospace Engineering

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Explosion simulation including a coupled fluid-structure interaction problem using Smoothed Particle Hydrodynamics. / Kobashi, Wataru; Matsuo, Akiko; Murata, Kenji; Noguchi, Hirohisa; Kato, Yukio.

Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. 2006. p. 2301-2309 (Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting; Vol. 4).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kobashi, W, Matsuo, A, Murata, K, Noguchi, H & Kato, Y 2006, Explosion simulation including a coupled fluid-structure interaction problem using Smoothed Particle Hydrodynamics. in Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting, vol. 4, pp. 2301-2309, 44th AIAA Aerospace Sciences Meeting 2006, Reno, NV, United States, 06/1/9.

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abstract = "The Smoothed Particle Hydrodynamics (SPH) method is used to simulate the dynamics of the underwater explosion (UNDEX) within the steel vessel. Three kinds of simulations, the propagation of underwater shock wave generated by the experimental data, underwater shock wave-metal interaction, and detonation gas-water interaction are performed and are compared with the experiment to provide confidence in numerical modeling. These simulations clarified that the interaction between steel vessel and water is well simulated, but the reproduction of expansions of water and detonation gas are difficult to simulate because the quick increase of volume per one particle cause the oscillation at detonation gas-water interface. As a result, the simulated deformation of steel vessel caused by UNDEX becomes smaller than that of the experiment. The present simulations clarify the advantages and difficulties of SPH method reproducing the damage of explosion including the coupled fluid-structure interaction.",

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