Nian Wang, Mingjie Zhang, Sulaiman Alsaleem, Lesley M. Wright, Je-Chin Han*
Frontiers in Heat and Mass Transfer, Vol.13, pp. 1-13, 2019, DOI:10.5098/hmt.13.9
Abstract This study investigates turbine blade, leading edge cooling from normal or tangential impinging jets. These jets impinging on a semi-cylindrical,
inner surface are constrained to discharge in a single direction. The downstream jets are affected by the crossflow originating from the upstream jets.
To understand the thermal flow physics, numerical simulations are performed using the realizable k- turbulence model. Both the experimental and
numerical results show crossflow is more detrimental to normal impinging jets than the tangential jets. Furthermore, with a significant temperature
drop across the jet plate, designers must correctly interpret jet impingement results. More >
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