Waveforms of Time-Resolved Film-Cooling Parameters on a Leading-Edge Model
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Abstract
It is necessary to understand how film cooling both reduces the adiabatic wall temperature and influences the heat transfer coefficient in order to predict its benefit to a gas turbine hot gas path component. Although a great number of studies have considered steady film-cooling flows, unsteadiness has only recently been considered. Unsteadiness in the freestream flow or the coolant flow can cause fluctuations in both the adiabatic effectiveness and heat transfer coefficient, the dynamics of which have been difficult to measure.
This paper has been withdrawn.