![]() ![]() the Concorde accident), and Defence (military aircraft, unmanned vehicle systems) aircraft industries. Selection and/or peer-review under responsibility of the Asia-Oceania Association for Fire Science and Technology. The design of fuel tanks with a reduced vulnerability with respect to hydrodynamic ram pressure (HRAM) effects is of an increasing need in the Civil (e.g. The air cavity growth is fed by the inflow of atmospheric air from outside the containment. The evolution of the growth of the air cavity (diameter) in the water phase is a main result of this study. (B) Differences of the processes with and without the containment.Ī central requirement for this paper, is to adapt ANSYS/AUTODYN-3D solvers capabilities to compute the hypervelocity impact induced flow of the three material aggregates a) solid (aluminium, polycarbonate) b) liquid (water) c) gaseous (air) in the computational model, to bring up the gaseous cavity behind the penetrating hollow sphere. (A) Numerical investigation of the unsteady, kinetic energy penetration induced flow field inside the containment. Hydrodynamic ram (HRAM) refers to the damage process due to high pressures generated when a high-velocity projectile penetrates a compartment or vessel. ![]() The paper focuses on the following subject: By considering both hydrodynamic pressure and ram pressure effects on flow through a porous wheel, we construct here a predictive model for calculating the. In the scenarios with a relative velocity of 500 km s-1, the amount decreases to nearly 70 in the case with the highest surrounding gas density. This paper presents two numerical simulations of hypervelocity impacts of a spherical hollow aluminium projectile ( V 0 = 2940 m/s) onto a hollow, cylindrical containment with water filling, serving as representative filling substance for fluids. ![]()
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