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Abstract <p>This paper presents the results of an experimental and numerical investigation of the interaction between shock waves and highly porous, gas-permeable barriers having both homogeneous and heterogeneous spatial structures. The experiments are performed in a shock tube over a range of shock wave Mach numbers M = 1.2–1.8. The barriers used in the experiments consist of mesh stacks with triangular cells and layers of cellular-porous nickel. The shock wave interaction with the barriers is numerically simulated on the basis of the solution to the Reynolds-averaged Navier–Stokes equations, employing a toroidal skeletal model of the porous material. The study demonstrates that minimal shock wave reflection is achieved using combined barriers. These barriers comprise a series of mesh stacks with successively decreasing cell sizes, closed by a layer of cellular-porous material with minimal pore size.</p>

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Reflection of Shock Waves from Highly Porous Barriers with Heterogeneous Structure

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • S. G. Mironov,
  • T. V. Poplavskaya,
  • S. V. Kirilovskii,
  • I. S. Tsyryul’nikov

摘要

Abstract

This paper presents the results of an experimental and numerical investigation of the interaction between shock waves and highly porous, gas-permeable barriers having both homogeneous and heterogeneous spatial structures. The experiments are performed in a shock tube over a range of shock wave Mach numbers M = 1.2–1.8. The barriers used in the experiments consist of mesh stacks with triangular cells and layers of cellular-porous nickel. The shock wave interaction with the barriers is numerically simulated on the basis of the solution to the Reynolds-averaged Navier–Stokes equations, employing a toroidal skeletal model of the porous material. The study demonstrates that minimal shock wave reflection is achieved using combined barriers. These barriers comprise a series of mesh stacks with successively decreasing cell sizes, closed by a layer of cellular-porous material with minimal pore size.