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

Fingerprint

underwater explosions
bubbles
detonation
explosions
equations of state
water pressure
overpressure
high speed cameras
digital cameras
scale models
ideal gas
excitation
histories
computer programs
moments
formulations
oscillations
air
products
gases

Keywords

  • explosion
  • bubble
  • migration
  • eulerian
  • abaqus

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.
Virtanen, Juha ; Vehviläinen, Kalle ; Juntunen, Markku ; Jäppinen, Turkka. / Behavior of Underwater Explosion Bubble. Paper presented at 79th Shock and Vibration Symposium, Orlando, United States.23 p.
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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, 26/10/08 - 30/10/08, .

Behavior of Underwater Explosion Bubble. / Virtanen, Juha; Vehviläinen, Kalle; Juntunen, Markku; Jäppinen, Turkka.

2008. Paper presented at 79th Shock and Vibration Symposium, Orlando, United States.

Research output: Contribution to conferenceConference articleScientific

TY - CONF

T1 - Behavior of Underwater Explosion Bubble

AU - Virtanen, Juha

AU - Vehviläinen, Kalle

AU - Juntunen, Markku

AU - Jäppinen, Turkka

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

KW - explosion

KW - bubble

KW - migration

KW - eulerian

KW - abaqus

M3 - Conference article

ER -

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