Abstract
A finite volume method with five-equation model for multi-fluid is implemented in a three-dimensional unstructured vertex centered code, FEFLO. Air, water, and high explosive (HE) material are considered as compressible fluids in the numerical model. The equations of state of the considered fluids are written in a general formulation. First, one-dimensional detonation to copper plate is given to verify that the presented method works correctly with complex equations of state. Second, TNT ignition in water is given to provide initial condition for underwater explosions. Third, explosion near a rigid cylinder is studied to compare with the results from literature. Eventually, underwater explosions near a rigid cylinder in a tank partially filled with water is studied.
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