Numerical Simulations on Film Cooling Effectiveness from Two Staggered Rows of Coolant Jets
This paper reports numerical simulations of the film cooling performance and flow structure from two staggered rows of coolant jets. The RANS modeling is conducted for the cases that are validated by and matched to the measurements of Sinha et al. (J Turbomach 113:442, 1991) . The cooling effectiveness of two rows of jets is calculated for blowing ratios of 0.5 and 1.0. It is found that the interaction of counter-rotating vortex pairs (CRVPs) generated by two rows of jets enhances the cooling effectiveness significantly. Moreover, the calculations quantify the contribution from each row of coolant jets to the overall cooling performance and find that the second row makes more contribution than does the first row.
KeywordsJet in crossflow Film cooling RANS
The support of National Key Research and Development Program of China (No.: 2016YFB0600605) is gratefully acknowledged.
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