The wall-jetting effect in Mach reflection: A numerical investigation

G. Ben-Dor, E. I. Vasilev, L. F. Henderson, T. Elperin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The jetting effect often appears in the Mach reflection of a shock and in more complicated irregular shock reflections. It is studied numerically using a W-modification of the second order Godunov scheme, to integrate the system of Euler equations. It is shown that there is no correspondence between the shock reflection patterns and the occurrence of jetting. Furthermore there are two kinds of jetting: strong which occurs when there is a stagnation point on the ramp surface where the streamlines divide into an upstream moving jet and a downstream moving slug; and weak which has no stagnation point and may occur at small and large values of the ramp angle. The width of the jet for Mach reflections is determined by the angle of the Mach stem at the shock triple point (the Mach node).
Original languageEnglish GB
Title of host publicationShock Waves
PublisherSpringer
Pages461-466
ISBN (Print)978-3-540-22497-6
DOIs
StatePublished - 2010

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