Interaction of a Shock Wave with an Increased-Density Gas Bubble in the Neighborhood of the Wall
| Autor: | O. G. Sutyrin, R. R. Khabibullin |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Fluid Flow and Transfer Processes Shock wave Physics Plane (geometry) Mechanical Engineering Bubble Plane symmetry General Physics and Astronomy Mechanics 01 natural sciences 010305 fluids & plasmas Pulse (physics) Physics::Fluid Dynamics Transverse plane symbols.namesake Mach number 0103 physical sciences Reflection (physics) symbols |
| Zdroj: | Fluid Dynamics. 56:228-235 |
| ISSN: | 1573-8507 0015-4628 |
| Popis: | The problem of the interaction of a shock wave with an increased-density gas bubble in the neighborhood of the wall is investigated on the basis of numerical simulation of Euler’s equations in the two-dimensional plane formulation. The process of shock wave refraction and focusing, namely, reflection of transverse shocks from the plane of symmetry of flow and the wall, is described. It is found that qualitatively different flow regimes, in which the wave is focused in the plane of symmetry before or after the beginning of wave reflection from the wall, can be implemented depending on the constitutive parameters of the problem. It is shown that the presence of a heavy bubble in the neighborhood of the wall strengthens multiply the pulse shock-wave loading on the wall. The maximum pressure reached on the wall is found as a function of the impinging wave Mach number, the bubble gas density, and the initial distance between the bubble and the wall. In some cases such a dependence is essentially nonmonotonic with respect to the bubble gas density and the distance between bubble and wall. |
| Databáze: | OpenAIRE |
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