This experiment investigated the effects of free-stream turbulence intensity, length scale, Reynolds number, and leading-edge velocity gradient on stagnation-region heat transfer. Heat transfer was measured in the stagnation region of four models with elliptical leading edges downstream of five turbulence-generating grids. Stagnation-region heat transfer augmentation increased with decreasing length scale but ann optimum scale was not found. A correlation was developed that fit heat transfer data for isotropic turbulence to within ±4 percent but did not predict data for anisotropic turbulence. Stagnation heat transfer augmentation caused by turbulence was unaffected by the velocity gradient. The data of other researchers compared well with the correlation. A method of predicting heat transfer downstream of the stagnation point was developed.
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Influence of Turbulence Parameters, Reynolds Number, and Body Shape on Stagnation-Region Heat Transfer
G. J. Van Fossen,
G. J. Van Fossen
NASA Lewis Research Center, Cleveland, OH 44135
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R. J. Simoneau,
R. J. Simoneau
NASA Lewis Research Center, Cleveland, OH 44135
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C. Y. Ching
C. Y. Ching
Syracuse University, Syracuse, NY
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G. J. Van Fossen
NASA Lewis Research Center, Cleveland, OH 44135
R. J. Simoneau
NASA Lewis Research Center, Cleveland, OH 44135
C. Y. Ching
Syracuse University, Syracuse, NY
J. Heat Transfer. Aug 1995, 117(3): 597-603 (7 pages)
Published Online: August 1, 1995
Article history
Received:
April 1, 1994
Revised:
November 1, 1994
Online:
December 5, 2007
Citation
Van Fossen, G. J., Simoneau, R. J., and Ching, C. Y. (August 1, 1995). "Influence of Turbulence Parameters, Reynolds Number, and Body Shape on Stagnation-Region Heat Transfer." ASME. J. Heat Transfer. August 1995; 117(3): 597–603. https://doi.org/10.1115/1.2822619
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