Task 3 Interaction of a hot streak temperature gradient with the endwall

Initial experiments have been completed whereby coolant, which was nominally 1% of the core flow, was injected through discrete film-cooling holes placed in the combustor liner walls. Adiabatic wall temperatures were measured for this case as a benchmark to compare against slot cooling with the same cooling injection. These preliminary measurements were made with a flat temperature profile upstream of the film-cooling injection. The final measurements will be made by injecting coolant from a two-dimensional slot upstream of the vane.

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