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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Description/Abstract
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.
| Item Type: | Article |
|---|---|
| ISSNs: | 0938-1287 (print) |
| Related URLs: | |
| 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 |
| Item ID: | 21322 |
| 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) |
| Date: | 2000 |
| Status: | Published |
| Contact Email Address: | gjb1@soton.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/21322 |
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