Thermographic heat transfer measurements in separated flows |
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Authors: | V. Scherer S. Wittig G. Bittlinger A. Pfeiffer |
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Affiliation: | (1) Institut für Thermische Strömungsmaschinen, Universität Karlsruhe, W-7500 Karlsruhe, Germany;(2) Present address: ABB Corporate Research, Heidelberg, Germany |
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Abstract: | A measurement technique to determine the surface heat transfer distribution in complex turbulent flows is described. For this purpose, a constant wall heat flux test surface has been designed. To measure the surface temperature of the test plate, an infrared camera was used. The instrumentation allows the determination of the heat transfer with high accuracy and detailed spatial resolution. In examining combustor-type separated flow, the capabilities of the technique are demonstrated and its accuracy is verified by appropriate conventional techniques. |
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