Abstract
A computational and experimental investigation of three-dimensional mean flow field resulting due to the free stream turbulence on film cooling performance has been reported in this present paper. A row of square jet with L/D ratio of 2.5 as a reference case has been employed. The free stream turbulence intensity of 8% and the blowing ratio of 0.5 are investigated to check the impact of jet velocity on the cooling performance. The objective of the present work was to carry out a detailed investigation of the mean flow field and flow structure. Numerical simulations were performed using the commercial code FLUENT 6.2.16 based on the finite volume method with two different models, namely, k-ε, RSM models. The results of the preliminary computational analysis show that the flow field produced by the free stream provides a serious impact on the film cooling performance.
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