A feature-based jet model has been proposed for use in 3D CFD prediction of turbine blade film cooling. The goal of the model is to be able to perform computationally efficient flow prediction and optimization of film-cooled turbine blades. The model reproduces in the near hole region the macro flow features of a coolant jet within a Reynolds-Averaged Navier Stokes (RANS) framework. Numerical predictions of the 3D flow through a linear transonic film-cooled turbine cascade are carried out with the model, with a low computational overhead. Different cooling holes arrangement are computed and the prediction accuracy is evaluated versus experimental data. It shown that the present model provides a reasonably good prediction of the adiabatic film-cooling effectiveness and Nusselt number around the blade. A numerical analysis of the interaction of coolant jets issuing from different rows of holes on the blade pressure side is carried out. It is shown that the upward radial migration of the flow due to the passage secondary flow structure has an impact on the spreading of the coolant and the film cooling effectiveness on the blade surface. Based on this result, a new arrangement of the cooling holes for the present case is proposed that leads to a better spanwise covering of the coolant on the blade pressure side surface.
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ASME Turbo Expo 2006: Power for Land, Sea, and Air
May 8–11, 2006
Barcelona, Spain
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-4238-X
PROCEEDINGS PAPER
3D Flow Prediction and Improvement of Holes Arrangement of a Film-Cooled Turbine Blade Using a Feature-Based Jet Model
Andre´ Burdet,
Andre´ Burdet
Swiss Federal Institute of Technology, Zu¨rich, Switzerland
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Reza S. Abhari
Reza S. Abhari
Swiss Federal Institute of Technology, Zu¨rich, Switzerland
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Andre´ Burdet
Swiss Federal Institute of Technology, Zu¨rich, Switzerland
Reza S. Abhari
Swiss Federal Institute of Technology, Zu¨rich, Switzerland
Paper No:
GT2006-91073, pp. 849-863; 15 pages
Published Online:
September 19, 2008
Citation
Burdet, A, & Abhari, RS. "3D Flow Prediction and Improvement of Holes Arrangement of a Film-Cooled Turbine Blade Using a Feature-Based Jet Model." Proceedings of the ASME Turbo Expo 2006: Power for Land, Sea, and Air. Volume 3: Heat Transfer, Parts A and B. Barcelona, Spain. May 8–11, 2006. pp. 849-863. ASME. https://doi.org/10.1115/GT2006-91073
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