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Thermocouple Boundary Layer RakeApparatus and method for providing a velocity flow profile near a reference surface. A measuring device utilizes a plurality of thermojunction pairs to provide the velocity flow profile in accordance with behavior of a gas relative to a constant thickness strut which stands vertically from the reference surface such that the span is normal to the surface, and the chord is parallel to the surface along the initial flow direction. Each thermojunction is carried on either side of a heater formed on a measuring surface in a constant thickness portion of a strut. Additionally, each thermojunction of a given pair is located at a predetermined height from the reference surface. Gas velocity data obtained from temperature differentials from one side of the heater to the other at each successive height is utilized to generate the velocity and turbulence level profiles.
Document ID
20020060115
Acquisition Source
Glenn Research Center
Document Type
Other - Patent
External Source(s)
LEW-16999-1
Authors
Danny P Hwang
(Glenn Research Center Cleveland, United States)
Herbert A Will
(Glenn Research Center Cleveland, United States)
Gustave C Fralick ORCID
(Glenn Research Center Cleveland, United States)
Date Acquired
August 20, 2013
Publication Date
May 7, 2002
Publication Information
Publisher: United States Patent and Trademark Office
Subject Category
Fluid Mechanics And Thermodynamics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-6,382,024
Patent Application
US-Patent-Appl-SN-613052
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