Open Access
ARTICLE
TURBINE BLADE LEADING EDGE IMPINGEMENT COOLING FROM NORMAL OR TANGENTIAL JETS WITH CROSSFLOW EFFECT
Nian Wang, Mingjie Zhang, Sulaiman Alsaleem, Lesley M. Wright, Je-Chin Han*
Turbine Heat Transfer Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, Texas, 77843, USA
* Corresponding Author: Email:
Frontiers in Heat and Mass Transfer 2019, 13, 1-13. https://doi.org/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.
Keywords
Cite This Article
Wang, N., Zhang, M., Alsaleem, S., Wright, L. M., Han, J. (2019). TURBINE BLADE LEADING EDGE IMPINGEMENT COOLING FROM NORMAL OR TANGENTIAL JETS WITH CROSSFLOW EFFECT.
Frontiers in Heat and Mass Transfer, 13(1), 1–13. https://doi.org/10.5098/hmt.13.9