Abstract
The present paper describes the behavior of the cooling jet on the flat surface in the lateral injection in film-cooling. Simultaneous velocity and temperature measurements were made by the double-wire probe. The test surface was also covered with an encapsulated temperature-sensitive liquid crystal. The surface temperature distributions were obtained by the image-processing system of the liquid crystal. The tests were conducted at three mass flux ratios. The laterally injected jet has an asymmetric structure with a large scale of vortex motion on one side caused by the interaction with the primary stream. Asymmetry is promoted with increase of the mass flux ratio, resulting in low film-cooling effectiveness.
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