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Visualization of turbulent spots and unsteady wake-induced boundary-layer transition with thermochromic liquid crystals

Abstract:

A method of using thermochromic liquid crystals has been developed to visualize the thermal footprints of turbulent spots convecting downstream in an otherwise laminar boundary layer over a heated surface. This technique has been employed to visualize the development of turbulent spots under the influence of adverse pressure gradients. It has also been used to visualize the transitional events that occur during unsteady wake-induced boundary layer transition typically of those occurring in mu...

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Authors


Kittichaikan, C More by this author
Hodson, HP More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Engineering Science
Publisher:
Elsevier Science Ltd
Journal:
Optics and Laser Technology
Volume:
31
Issue:
1
Pages:
33-39
Publication date:
1999-02-05
DOI:
ISSN:
0030-3992
URN:
uuid:afdfe1f6-2128-45d3-8013-ee78409a3bca
Source identifiers:
399307
Local pid:
pubs:399307
Language:
English

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