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Refraction of Oblique Shock Wave on a Tangential Discontinuity
Version 1
: Received: 22 June 2021 / Approved: 22 June 2021 / Online: 22 June 2021 (14:26:45 CEST)
A peer-reviewed article of this Preprint also exists.
Bulat, P.; Melnikova, A.; Upyrev, V.; Volkov, K. Refraction of Oblique Shock Wave on a Tangential Discontinuity. Fluids 2021, 6, 301. Bulat, P.; Melnikova, A.; Upyrev, V.; Volkov, K. Refraction of Oblique Shock Wave on a Tangential Discontinuity. Fluids 2021, 6, 301.
Abstract
Refraction of an oblique shock wave on a tangential discontinuity dividing two gas flows with different properties is considered. It is shown that its partial reflection occurs excepting of geometrical diffraction of an oblique shock. Another oblique shock, expansion wave or weak discontinuity that coincides with Mach line, can act as a reflected disturbance. This study focuses on relationships which define the type of reflected discontinuity and its parameters. Domains of existence of various shock-wave structures with reflected disturbances of two types and boundaries between them are defined. The domains of parameters with one or two solutions exist for the characteristic refraction. Conditions of the regular refraction and the Mach refraction are formulated, and boundaries between those two refraction types are defined for various types of gases. Refraction phenomena in various engineering problems (hydrocarbon gaseous fuel and its combustion products, diatomic gas, fuel mixture of oxygen and hydrogen etc.) are discussed.
Keywords
shock wave process; shock-wave structure; refraction; domain of existence
Subject
Physical Sciences, Acoustics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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