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A Novel Measuring Technique Utilizing Temperature Sensitive Paint - Measurement Procedure, Validation, Application, and Comparison With Infrared Thermography

A Novel Measuring Technique Utilizing Temperature Sensitive Paint - Measurement Procedure, Validation, Application, and Comparison With Infrared Thermography
Autor:

Lorenz,M.
Horbach,T.
Schulz,A.
Bauer,H.-J.

Quelle:

Journal of Turbomachinery
May 2013, Vol. 135
doi: 10.1115/1.4006638

Abstract

 A novel method for surface temperature measurement using temperature sensitive paint (TSP) is presented. Precalibration of the TSP is shown and a semi in situ calibration technique using thermocouples is provided for high accuracy measurement. The method presented is applied to a film cooling experiment with a maximum surface temperature of 430 K and compared to highly reliable infrared thermography measurements that serve as benchmark results. The in situ calibration technique shows a maximum deviation of 0.5 K from the thermocouple readings. The comparison of laterally average temperature duistributions of TSP and infrared measurements shows excellent agreement.