Shock Focusing upon Interaction with Heavy Gas Bubble of Different Density. (December 2018)

• Record Type: Journal Article
• Authors: Georgievskiy, Pavel; Levin, Vladimir; Sutyrin, Oleg
• Is Part Of: Journal of physics. Volume 1141(2019)
• Publication Date: 2018-12
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1141/1/012084
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Interaction of a shock with round area of heavy gas is simulated using two-dimensional plane and axisymmetrical Euler's equations. Plane formulation describes interaction of a shock with heavy gas cylinder and axisymmetrical models interaction with heavy gas bubble. Incident shock refraction and focusing processes are described including two different interaction patterns – external and internal. Three consecutive pressure peaks are found to occur at symmetry axis (or plane) inside and outside of the shocked inhomogeneity. A dependence of peak pressure values on initial gas density in the inhomogeneity is determined for three different shock Mach numbers. The highest pressure for plane and axisymmetric cases is shown to be reached in different interaction patterns.