To design cooled gas turbine blades, heat transfer coefficients around its surface are required. The calculated heat transfer data under operating conditions in the turbine are often inaccurate and require experimental verification. A method is presented here to determine the heat transfer coefficients around the blade surface and in the coolant channels. This requires measurements of the main stream and coolant temperatures together with the outer surface temperature distribution at varying mass flows. In order to conduct these tests in a gas turbine, test blades have to be specially prepared allowing the variation and measurement of coolant mass flow.
Determination of Heat Transfer Coefficients Around a Blade Surface From Temperature Measurements
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Mukherjee, DK. "Determination of Heat Transfer Coefficients Around a Blade Surface From Temperature Measurements." Proceedings of the ASME 1979 International Gas Turbine Conference and Exhibit and Solar Energy Conference. Volume 1A: Gas Turbines. San Diego, California, USA. March 12–15, 1979. V01AT01A028. ASME. https://doi.org/10.1115/79-GT-28
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