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Dry-surface coating method for visualization of separation on a bluff bodyA simple and relatively accurate dry-surface coating method for visualization of the flow separation on a circular cylinder (or any bluff body) during wind tunnel tests is described. The technique consists of (1) application of a thin coating composed of an indicator and a paint carrier; (2) drying of the film; (3) conditioning of the coating with an acidic solution to ensure a suitable color reaction; (4) release into the body wake of a gas able to produce a base through chemical reaction with the solvent of the conditioning solution; and (5) color reaction according to pH.
Document ID
19810054640
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sadeh, W. Z.
(Colorado State Univ. Fort Collins, CO, United States)
Brauer, H. J.
(Colorado State Univ. Fort Collins, CO, United States)
Durgin, J. R.
(Colorado State University Fort Collins, CO, United States)
Date Acquired
August 11, 2013
Publication Date
July 1, 1981
Publication Information
Publication: AIAA Journal
Volume: 19
Subject Category
Instrumentation And Photography
Accession Number
81A39044
Funding Number(s)
CONTRACT_GRANT: NSG-3127
Distribution Limits
Public
Copyright
Other

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