Acquisition and Processing Considerations for Infrared Images of Rotating Turbine Blades

Knisely, Brian F.; Berdanier, Reid A.; Thole, Karen A.; Haldeman, Charles W.; Markham, James R.; Cosgrove, Joseph E.; Carlson, Andrew E.; Scire, James J.

doi:10.1115/1.4050143

Acquisition and Processing Considerations for Infrared Images of Rotating Turbine Blades

Journal Article · 24 March 2021 · Journal of Turbomachinery

DOI:https://doi.org/10.1115/1.4050143· OSTI ID:1849153

Knisely, Brian F. ^[1]; Berdanier, Reid A. ^[2]; Thole, Karen A. ^[3]; Haldeman, Charles W. ^[4]; Markham, James R. ^[5]; Cosgrove, Joseph E. ^[5]; Carlson, Andrew E. ^[5]; Scire, James J. ^[6]

Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16801; OSTI
Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16801
Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802
Pratt & Whitney, East Hartford, CT 06108
Advanced Fuel Research, Inc., East Hartford, CT 06108
New York Institute of Technology, Old Westbury, NY 11568

Abstract

As designers aim to increase efficiency in gas turbines for aircraft propulsion and power generation, spatially resolved experimental measurements are needed to validate computational models and compare improvement gains of new cooling designs. Infrared (IR) thermography is one such method for obtaining spatially resolved temperature measurements. As technological advances in thermal detectors enable faster integration times, surface temperature measurements of rotating turbine blades become possible to capture including the smallest features. This paper outlines opportunities enabled by the latest IR detector technologies for capturing spatially resolved rotating blade temperatures, while also addressing some of the challenges of implementing IR for turbine rigs such as the one in the Steady Thermal Aero Research Turbine (START) Laboratory. This paper documents critical steps in achieving accurate measurements including calibration, integration times, spatial noise, and motion blur. From these results, recommendations are provided for achieving accurate IR measurements collected in a rotating turbine facility to study film cooling.

Research Organization:: Pennsylvania State Univ., University Park, PA (United States)

Sponsoring Organization:: USDOE Office of Fossil Energy (FE)

DOE Contract Number:: FE0025011;

OSTI ID:: 1849153

Journal Information:: Journal of Turbomachinery, Journal Name: Journal of Turbomachinery Journal Issue: 4 Vol. 143; ISSN 0889-504X

Publisher:: ASME

Country of Publication:: United States

Language:: English

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