Numerical simulations coupled with laser Doppler velocimetry (LDV) experiments were carried out to investigate a slot jet issued into a cross flow, which is relevant in the film cooling of gas turbine combustors. The film-cooling fluid injection from slots or holes into a cross flow produces highly complicated flow fields. In this paper, the time-averaged Navier-Stokes equations were solved on a collocated body-fitted grid system with the shear stress transport , V2F , and stress- turbulence models. The fluid flow and turbulent Reynolds stress fields were compared to the LDV experiments for three jet angles, namely, 30, 60, and 90 deg, and the jet blowing ratio is ranging from 2 to 9. Good agreement was obtained. Therefore, the present solution procedure was also adopted to calculations of 15 and 40 deg jets. In addition, the temperature fields were computed with a simple eddy diffusivity model to obtain the film-cooling effectiveness, which, in turn, was used for evaluation of the various jet cross-flow arrangements. The results show that a recirculation bubble downstream of the jet exists for jet angles larger than 40 deg, but it vanishes when the angle is , which is in good accordance with the experiments. The blowing ratio has a large effect on the size of the recirculation bubble and, consequently, on the film cooling effectiveness. In addition, the influence of boundary conditions for the jet and cross flow are also addressed in the paper.
Skip Nav Destination
e-mail: bengt.sunden@vok.lth.se
Article navigation
July 2005
Technical Papers
A Numerical and Experimental Investigation of the Slot Film-Cooling Jet With Various Angles
Rongguang Jia,
Rongguang Jia
Division of Heat Transfer,
Lund Institute of Technology
, Lund 22100, Sweden
Search for other works by this author on:
Bengt Sundén,
Bengt Sundén
Division of Heat Transfer,
e-mail: bengt.sunden@vok.lth.se
Lund Institute of Technology
, Lund 22100, Sweden
Search for other works by this author on:
Petre Miron,
Petre Miron
LARA, Laboratoire Aquitain de Recherche en Aérothermique,
Université de Pau
, c/o Turbomeca, Boredes Cedex 64511, France
Search for other works by this author on:
Bruno Léger
Bruno Léger
LARA, Laboratoire Aquitain de Recherche en Aérothermique,
Université de Pau
, c/o Turbomeca, Boredes Cedex 64511, France
Search for other works by this author on:
Rongguang Jia
Division of Heat Transfer,
Lund Institute of Technology
, Lund 22100, Sweden
Bengt Sundén
Division of Heat Transfer,
Lund Institute of Technology
, Lund 22100, Swedene-mail: bengt.sunden@vok.lth.se
Petre Miron
LARA, Laboratoire Aquitain de Recherche en Aérothermique,
Université de Pau
, c/o Turbomeca, Boredes Cedex 64511, France
Bruno Léger
LARA, Laboratoire Aquitain de Recherche en Aérothermique,
Université de Pau
, c/o Turbomeca, Boredes Cedex 64511, FranceJ. Turbomach. Jul 2005, 127(3): 635-645 (11 pages)
Published Online: January 14, 2005
Article history
Received:
February 16, 2004
Revised:
January 14, 2005
Citation
Jia, R., Sundén, B., Miron, P., and Léger, B. (January 14, 2005). "A Numerical and Experimental Investigation of the Slot Film-Cooling Jet With Various Angles." ASME. J. Turbomach. July 2005; 127(3): 635–645. https://doi.org/10.1115/1.1929821
Download citation file:
Get Email Alerts
Related Articles
A Detailed Analysis of Film Cooling Physics: Part III— Streamwise Injection With Shaped Holes
J. Turbomach (January,2000)
Three Component Velocity Field Measurements in the Stagnation Region of a Film Cooled Turbine Vane
J. Turbomach (July,2002)
A Detailed Analysis of Film Cooling Physics: Part IV— Compound-Angle Injection With Shaped Holes
J. Turbomach (January,2000)
A Detailed Analysis of Film-Cooling Physics: Part I—Streamwise Injection With Cylindrical Holes
J. Turbomach (January,2000)
Related Proceedings Papers
Related Chapters
Cavitating Structures at Inception in Turbulent Shear Flow
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Introduction
Design and Analysis of Centrifugal Compressors
Extended Surfaces
Thermal Management of Microelectronic Equipment