Large-Eddy Simulation of the Turbulent Flow and Heat Transfer in a Turbine Vane Model Cooled by Jet Impingement
Abstract
Wall-resolved Large-Eddy Simulation (LES) is assessed in predicting the heat transfer and the flow dynamics within a semi-industrial configuration of a turbine vane cooled by jet impingement. The geometry features 39 jet holes with an average Reynolds number of 10 000 in each hole. Two jet-to-target distances are involved, corresponding to H/D = 6.4 for the leading edge jets and H/D = 2 for the downstream jets impinging a flat plate. In parallel to LES, RANS simulations using the kω Shear Stress Transport (SST) model and the Elliptic Blending Reynolds-Stress Model (EB-RSM) are also performed to provide representative boundary conditions as well as a reference of RANS performance on such a configuration. Numerical results are compared with previously conducted experimental Particle Image Velocimetry (PIV) and infrared (IR) thermography measurements. The overall flow complex topology is discussed and the LES shows a good agreement with PIV. Regarding heat transfer, the kω SST and EB-RSM RANS models exhibit high discrepancies with IR measurements. In contrast, the LES achieves significantly better accuracy. Local heat transfer rates vary with both jet-to-target spacing and mass flow rates. The LES database, validated against experimental measurements, thus offers a reliable reference for turbulence features in multi-jet impingement configurations.
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BibTeX
@article{mazaleyrat2026largeeddy,
title = {{Large-Eddy Simulation of the Turbulent Flow and Heat Transfer in a Turbine Vane Model Cooled by Jet Impingement}},
author = {Jules Mazaleyrat and Emmanuel Laroche and Remi Manceau and Thomas Grosnickel and Yohan Smith and Guillaume Bonneau},
journal = {Journal of Turbomachinery},
year = {2026},
month = sep,
url = {https://inria.hal.science/hal-05728182v1},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - Large-Eddy Simulation of the Turbulent Flow and Heat Transfer in a Turbine Vane Model Cooled by Jet Impingement
AU - Jules Mazaleyrat
AU - Emmanuel Laroche
AU - Remi Manceau
AU - Thomas Grosnickel
AU - Yohan Smith
AU - Guillaume Bonneau
PY - 2026
DA - 2026/09/07
JO - Journal of Turbomachinery
UR - https://inria.hal.science/hal-05728182v1
AB - Wall-resolved Large-Eddy Simulation (LES) is assessed in predicting the heat transfer and the flow dynamics within a semi-industrial configuration of a turbine vane cooled by jet impingement. The geometry features 39 jet holes with an average Reynolds number of 10 000 in each hole. Two jet-to-target distances are involved, corresponding to H/D = 6.4 for the leading edge jets and H/D = 2 for the downstream jets impinging a flat plate. In parallel to LES, RANS simulations using the kω Shear Stress Transport (SST) model and the Elliptic Blending Reynolds-Stress Model (EB-RSM) are also performed to provide representative boundary conditions as well as a reference of RANS performance on such a configuration. Numerical results are compared with previously conducted experimental Particle Image Velocimetry (PIV) and infrared (IR) thermography measurements. The overall flow complex topology is discussed and the LES shows a good agreement with PIV. Regarding heat transfer, the kω SST and EB-RSM RANS models exhibit high discrepancies with IR measurements. In contrast, the LES achieves significantly better accuracy. Local heat transfer rates vary with both jet-to-target spacing and mass flow rates. The LES database, validated against experimental measurements, thus offers a reliable reference for turbulence features in multi-jet impingement configurations.
SN - 0889-504X
ER -