First Trace for Irregular Shock Wave Process in Weak Mach Reflection

Siegenthaler, A. (2007). First Trace for Irregular Shock Wave Process in Weak Mach Reflection. In: Peter Jacobs, Tim McIntyre, Matthew Cleary, David Buttsworth, David Mee, Rose Clements, Richard Morgan and Charles Lemckert, 16th Australasian Fluid Mechanics Conference (AFMC). 16th Australasian Fluid Mechanics Conference (AFMC), Gold Coast, Queensland, Australia, (211-216). 3-7 December, 2007.

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Author Siegenthaler, A.
Title of paper First Trace for Irregular Shock Wave Process in Weak Mach Reflection
Conference name 16th Australasian Fluid Mechanics Conference (AFMC)
Conference location Gold Coast, Queensland, Australia
Conference dates 3-7 December, 2007
Proceedings title 16th Australasian Fluid Mechanics Conference (AFMC)
Place of Publication Brisbane, Australia
Publisher School of Engineering, The University of Queensland
Publication Year 2007
Year available 2007
Sub-type Fully published paper
ISBN 978-1-864998-94-8
Editor Peter Jacobs
Tim McIntyre
Matthew Cleary
David Buttsworth
David Mee
Rose Clements
Richard Morgan
Charles Lemckert
Start page 211
End page 216
Total pages 6
Collection year 2007
Language eng
Abstract/Summary Referring to von Neumann's words, transition from a two- to a three-shock reflection configuration in the weak domain presents some very considerable theoretical difficulties. It nonetheless remains an observed fact that such a transition does indeed occur in the real world. This paper describes the novel experimental technique and the results which for the first time did yield a "footprint" that something quite out-of-the-ordinary is taking place within the base of the reflected wave where the latter butts the point of shock confluence. The results of the work presented here remained puzzling initially, for they seemed to contradict some preconceived outcome. It was only years later that the specific detail which was first considered to be misleading could be interpreted. It disclosed that the flow through the reflected shock is being forced to deviate from the classic Rankine-Hugoniot shock transformation process. This departure then enables the unyielding boundary conditions to be fulfilled and three-shock reflection to get established. This occurs with some lag past detachment of RR, this interval being required for the properties to adjust to the imposed conditions. The hypothesis of the departure from classic shock theory has been verified in the wind tunnel and was confirmed.
Subjects 290501 Mechanical Engineering
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: 16th Australasian Fluid Mechanics Conference
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Created: Tue, 18 Dec 2007, 15:36:35 EST by Laura McTaggart on behalf of School of Engineering