Abstract
The dynamic underwater explosion bubble process is a complex phenomenon with many facets to consider. After detonation, the shockwave quickly strikes nearby structures. The bubble oscillation may then substantially damage the structures, even if the bubble pulse is not large. This is because other effects, such as whipping or water jet impact, often accompany the bubble pulse. This study applied the Eulerian Technique using ABAQUS software to simulate the process of underwater bubble explosion, pulsation and collapse. This approach allows many materials to be used in an Eulerian element and manages with large deformation of materials such as flows and gases. The simulated bubble is equivalent to a bubble generated by 55g of TNT. Although boundary conditions simplify the model, the method is feasible for simulating bubble dynamics and provides acceptably accurate results on bubble migration in water, pressure pulse, water jet formation, and flow field velocity surrounding the bubble. Future research can use this method to study bubbles, including their interaction with free surfaces and the submerged structures or floating structures.
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