Behavior of Underwater Explosion Bubble

Juha Virtanen, Kalle Vehviläinen, Markku Juntunen, Turkka Jäppinen

    Research output: Contribution to conferenceConference articleScientific

    Abstract

    Behaviour of an underwater explosion bubble was studied in this paper. Study includes both model scale UNDEX tests and simulations. In the experimental part of the study charges with sizes from 0,5 g to 4,0 g were detonated in a test tank with free surface while detonation moment and water pressures were measured. In addition, behaviour of the gas bubble was filmed with two high-speed digital cameras. Cases corresponding the tests were modelled using Eulerian element formulation with Abaqus/Explicit software. Water and air were modelled with equation of state material models. An overpressure excitation was used for introducing the appropriate charge excitation. Geers-Hunter explosion model was used for calculating the initial pressure for the charge. Detonation products were also modelled by using ideal gas equation of state material model. Simulated pressure history, bubble oscillation, migration and radiuses were studied and compared to measurements and both empirical and Geers-Hunter explosion model results.
    Original languageEnglish
    Number of pages23
    Publication statusPublished - 2008
    MoE publication typeNot Eligible
    Event79th Shock and Vibration Symposium - Orlando, United States
    Duration: 26 Oct 200830 Oct 2008

    Conference

    Conference79th Shock and Vibration Symposium
    CountryUnited States
    CityOrlando
    Period26/10/0830/10/08

    Keywords

    • explosion
    • bubble
    • migration
    • eulerian
    • abaqus

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  • Cite this

    Virtanen, J., Vehviläinen, K., Juntunen, M., & Jäppinen, T. (2008). Behavior of Underwater Explosion Bubble. Paper presented at 79th Shock and Vibration Symposium, Orlando, United States.