Numerical and experimental study of shock-driven cavity collapse

9th International Symposium on Cavitation

Betney, M.R.^1 ; Anderson, P.A.^1 ; Doyle, H.^2 ; Tully, B.^2 ; Hawker, N.A.^2 ; Ventikos, Y.^3

Department of Engineering Science, University of Oxford, Parks Road, Oxford

OX1 3PJ, United Kingdom^1

First Light Fusion Ltd., Begbroke Science Park, Begbroke, Oxfordshire

OX5 1PF, United Kingdom^2

Department of Mechanical Engineering, University College London, London

WC1E 7JE, United Kingdom^3

关键词: Driven cavity;    Eulerian grids;    Experimental investigations;    Front tracking approaches;    Hyper-surfaces;    Numerical and experimental study;    Simulated results;    Temporally resolved measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012011/pdf
DOI  :  10.1088/1742-6596/656/1/012011

来源: IOP

【 摘 要 】

A study is presented of the interaction of a shock wave with gas cavities cast in a hydrogel. Simulations are conducted using a front-tracking approach, whereby Lagrangian hypersurfaces are used to model the interface between materials. These 'fronts' are overlaid on an Eulerian grid which is used to model the bulk flow. Results are compared to an experimental investigation, in which a light gas gun is used to create ∼600 MPa shock waves in hydrogel blocks, within which air cavities have been cast. Experimental results are presented, including temporally resolved measurements of light emission. Comparison between experimental and simulated results shows good agreement.