Труды Института механики им. Р.Р. Мавлютова

ISSN 2542–0380

Электронный научный журнал | Electronic Scientific Journal

Proceedings of the Mavlyutov Institute of Mechanics

Bolotnova R.Kh., Gainullina E.F. Investigation of axisymmetric wave flows under interaction of a spherical impact pulse with a barrier of aqueous foam Proceedings of the Mavlyutov Institute of Mechanics. 2017. 12(2). 238–243.

2017. Vol. 12. Issue 2, Pp. 238–243
URL: http://proc.uimech.org/uim2017.2.036
DOI: 10.21662/uim2017.2.036

Investigation of axisymmetric wave flows under interaction of a spherical impact pulse with a barrier of aqueous foam

Bolotnova R.Kh.^∗, Gainullina E.F.^∗,∗∗

^∗Mavlyutov Institute of Mechanics, Ufa
^∗∗Ufa State Aviation Technical University, Ufa

Abstract

The problem of spherical explosion in the gas region with a protective foam layer is solved in a two-dimensional axisymmetric formulation using a two-phase model of a gas-liquid mixture that includes the laws of conservation of mass, momentum and energy of the mixture and the equation for the dynamics of the volume content of phases. The numerical implementation of the model was carried out by modifying the standard solver of the compressibleMultiphaseInterFoam of the open package OpenFOAM. The results of computer modeling are visualized using the ParaView graphical platform.

Keywords

spherical shock wave,
aqueous foam layer,
numerical modeling,
OpenFOAM package

Article outline

Problem: Numerical investigation of axisymmetric wave flows in the interaction of a spherical impact pulse with a barrier of aqueous foam

Methods: Numerical simulation was performed using the standard solver of the OpenFOAM package compressibleMultiphaseInterFoam, modified in accordance with the conditions of the problem.

As a result of analysis of wave flows dynamics in the interaction of a spherical shock pulse with a barrier of aqueous foam, it is shown that the ”redirection“ of a shock pulse along the boundary of a frothy barrier leads to blocking of the passing of shock wave into the foam and is accompanied by the formation of a toroidal vortex in the gas.