This study investigates the performance of several existing turbulence models for the prediction of film coolant jet in a crossflow. Two-equation models employing k–ε and k–ω closures, broadly categorized as high-Reynolds-number formulations, low-Reynolds-number formulations, DNS-based formulation, and nonlinear formulations have been used to simulate the flow. In all, seven different turbulence models have been tested. Predictions with different models have been compared with experimental results of Ajersch et al. (1995) and with each other to critically evaluate model performance. The assessment of models has been done keeping in mind that all models have been formulated for wall-bounded flows and may not be well suited for the jet-in-a-crossflow situation. Close agreement with experimental results was obtained at the jet exit and far downstream of the jet injection region, but all models typically overpredicted the magnitude of the velocities in the wake region behind the jet. The present study clearly underscores the deficiencies of the current models, and demonstrates the need for improvements. [S0889-504X(00)03002-6]
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July 2000
Technical Papers
Predictions of a Film Coolant Jet in Crossflow With Different Turbulence Models
Asif Hoda,
Asif Hoda
Mechanical Engineering Department, Louisiana State University, Baton Rouge, LA 70803
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Sumanta Acharya
Sumanta Acharya
Mechanical Engineering Department, Louisiana State University, Baton Rouge, LA 70803
Search for other works by this author on:
Asif Hoda
Mechanical Engineering Department, Louisiana State University, Baton Rouge, LA 70803
Sumanta Acharya
Mechanical Engineering Department, Louisiana State University, Baton Rouge, LA 70803
Contributed by the International Gas Turbine Institute and presented at the 44th International Gas Turbine and Aeroengine Congress and Exhibition, Indianapolis, Indiana, June 7–10, 1999. Manuscript received by the International Gas Turbine Institute February 1999. Paper No. 99-GT-124. Review Chair: D. C. Wisler.
J. Turbomach. Jul 2000, 122(3): 558-569 (12 pages)
Published Online: February 1, 1999
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Received:
February 1, 1999
Citation
Hoda , A., and Acharya, S. (February 1, 1999). "Predictions of a Film Coolant Jet in Crossflow With Different Turbulence Models ." ASME. J. Turbomach. July 2000; 122(3): 558–569. https://doi.org/10.1115/1.1302322
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