SUMMARYCommercially available elements of a composite consisting of a plastic sheet coated with liquid crystal, another sheet with a thin layer of a conducting material (gold or carbon), and copper bus bar strips were evaluated and found to provide a simple, convenient, accurate, and low-cost measuring device for use in heat transfer research. The particular feature of the composite is its ability to obtain local heat transfer coefficients and isotherm patterns that provide visual evaluation of the thermal performances of turbine blade cooling configurations. Examples of the use of the composite are presentee.

Calculations were made of the film cooling provided by rows of holes around the circumference of a cylinder in crossflow and the results were compared

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This paper summarizes the work conducted at the NASA Lewis Research Center to evolve and eval-