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Technique for measuring convective heat transfer at rough surfaces

Abstract:
A new method has been developed for measuring local heat transfer coefficients at rough surfaces. The technique was applied to an idealised section of a large scaled model of a turbine blade cooling passage to assess the effect of surface irregularities which result from the blade manufacturing process. The experimental method is described in full and the results are presented for tests on an isolated pin-fin situated in fully developed channel flow. The effect of the thermal conductivity of the roughness elements is discussed.

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Institution:
University of Oxford
Department:
Oxford, MPLS, Engineering Science
Publisher:
Publ by ASME
Journal:
American Society of Mechanical Engineers (Paper)
Publication date:
1990
ISSN:
0402-1215
URN:
uuid:3170b12f-45fe-4184-95eb-c4eb9d064240
Source identifiers:
399330
Local pid:
pubs:399330
Language:
English

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