Mathematical Modeling of Propagation of Explosion Waves and Their Effect on Various Objects
S. A. Valger1,2, N. N. Fedorova1,2, A. V. Fedorov1,2
1Novosibirsk State University of Architecture and Civil Engineering, Novosibirsk, 630008 Russia
2Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: взрыв, ударно-волновые воздействия, программные комплексы, ANSYS, AUTODYN, explosion, shock wave action, software packages
Abstract
Results of modeling propagation of a shock wave formed by an explosion of a spherical charge of a high explosive in a semi-infinite space bounded by a plane substrate are reported. Problems of the action of such a wave on objects rigidly fixed on the substrate (single prism and a set of prisms simulating an urban area) are considered. The computations are performed in a three-dimensional inviscid formulation with the use of the AUTODYN module of the commercial software package ANSYS. These numerical predictions are compared with experimental data on the static pressure in sensors mounted on the prism walls. A possibility of providing an adequate description of the unsteady flow pattern formed around the obstacles mounted on the substrate is demonstrated. Based on these numerical data, the intensity of the shock wave action on various objects is estimated.
|
