Near Resonantly Enhanced Schlieren for Wake Flow Visualisation in Shock Tunnels

Hruschka, R., O’Byrne, S. and Kleine, H. (2007). Near Resonantly Enhanced Schlieren for Wake Flow Visualisation in Shock Tunnels. 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, (456-460). 3-7 December, 2007.

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Author Hruschka, R.
O’Byrne, S.
Kleine, H.
Title of paper Near Resonantly Enhanced Schlieren for Wake Flow Visualisation in Shock Tunnels
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 456
End page 460
Total pages 5
Collection year 2007
Language eng
Abstract/Summary A new variant of the resonantly enhanced schlieren or shadowgraph technique has been developed for visualising flows with small density gradients using seeded lithium metal as the resonant species. The novelty of the technique lies in the use of a diode laser as the light source for the visualisation rather than systems based upon solid-state-pumped dye lasers or spectral lamps. We present time-resolved visualisations of near-wake flows around a cylinder in a hypersonic freestream in a shock tunnel, showing flow structures that cannot be resolved using a conventional standard schlieren system. Furthermore, a method of removing, at least partially, the limitation related to line-ofsight visualisation is demonstrated.
Subjects 290501 Mechanical Engineering
290800 Civil Engineering
290200 Aerospace 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: Wed, 19 Dec 2007, 11:15:23 EST by Laura McTaggart on behalf of School of Engineering