Shock-induced collapse of a cylindrical air cavity in water: a Free-Lagrange simulation
Ball, G.J., Howell, B.P., Leighton, T.G. and Schofield, M.J. (2000) Shock-induced collapse of a cylindrical air cavity in water: a Free-Lagrange simulation. Shock Waves, 10, (4), 265-276. (doi:10.1007/s001930000060).
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A Free-Lagrange CFD code is used to simulate the collapse of a cylindrical air cavity in water by a 1.9 GPa incident shock. The Lagrangian treatment allows the air/water interface to be tracked throughout the interaction. The incident shock is partially transmitted into the cavity, within which it experiences multiple reflections.
The upstream cavity wall involutes to form a high-speed jet which, on impact with the far cavity wall, produces an intense blast wave. Heating of the gas within the cavity is highly non-isentropic, and is dominated by shock heating. The predicted final gas temperature is of order 12000 K, although the modelling assumptions used here lead to over-prediction of temperature during the later stages of collapse.
|Keywords:||free-lagrange method, bubble collapse, detonation initiation, cavitation, jetting, shock heating|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences
University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Fluid Dynamics and Acoustics
|Date Deposited:||19 Jul 2006|
|Last Modified:||01 Jun 2011 01:52|
|Contributors:||Ball, G.J. (Author)
Howell, B.P. (Author)
Leighton, T.G. (Author)
Schofield, M.J. (Author)
|Contact Email Address:||email@example.com|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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