Measurement of convective heat-transfer coefficients on a wind tunnel model by passive and stimulated infrared thermograpy

Daniel L. Balageas; Daniel M. Boscher; Alain A. Deom

doi:10.1117/12.23107

1 November 1990 Measurement of convective heat-transfer coefficients on a wind tunnel model by passive and stimulated infrared thermograpy

Daniel L. Balageas, Daniel M. Boscher, Alain A. Deom

Author Affiliations +

Proceedings Volume 1341, Infrared Technology XVI; (1990) https://doi.org/10.1117/12.23107
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

Research conducted at ONERA to make quantitative infrared thermography operational and applicable to any 3D model is discussed. The problems of precise thermometry using this technique are considered, and the methodological and hardware choices made to obtain quantitative thermograms are described. The problem of determining the convective flows once the unsteady temperatures are known is addressed for two kinds of methods: classical passive thermography, in which only the heating due to convection is used, and active, or stimulated, thermography, in which the heat-transfer coefficients are calculated directly from the additional heating of the model by a radiation source, applied for short periods during the test.

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Daniel L. Balageas, Daniel M. Boscher, and Alain A. Deom "Measurement of convective heat-transfer coefficients on a wind tunnel model by passive and stimulated infrared thermograpy", Proc. SPIE 1341, Infrared Technology XVI, (1 November 1990); https://doi.org/10.1117/12.23107

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