Title

Temperature Measurements Of Porous Media For Transpiration Studies

Abstract

A method of measuring the local temperature of a porous wall is discussed. Measurements are taken with temperature sensitive paint applied in thin coats to the wall. This technique was validated on a 40PPI, 7% relative density aluminum porous coupon. Measurements of discharge coefficients as well as downstream effectiveness data are included to verify the flow through the porous wall was unaltered by applying the paint. A maximum deviation in film-cooling effectiveness of 9% between the two cases with the majority of data falling within 4% was found, very similar to the experimental uncertainty of the rig. This excellent agreement between the repeated tests showed that by applying thermal paint to a wall of such porosity does not significantly affect the flow exiting the wall and hence the measurement technique can readily be applied to transpiration cooling studies at this scale. Methods of filtering the temperature sensitive paint on the porous wall are presented.

Publication Date

1-1-2010

Publication Title

46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

Volume

2010-January

Number of Pages

1-10

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2010-6950

Socpus ID

85010903492 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85010903492

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