A variable property correction is given for turbulent boundary layers that are film-cooled using staggered rows of injection holes inclined at 35 deg. With the correction, a relation is provided between the adiabatic film cooling effectiveness for constant property flow and heat transfer coefficients for variable property flow, which are based on the difference between the freestream recovery temperature and wall temperature. The variable property correction was determined from heat transfer measurements for a range of injection parameters at different values of the nondimensional coolant temperature and from results in the literature. Because the flow is compressible, the importance of the injection mass flux ratio, momentum flux ratio, and velocity ratio are considered in the determination of effectiveness.
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Research Papers
Adiabatic Film Cooling Effectiveness From Heat Transfer Measurements in Compressible, Variable-Property Flow
P. M. Ligrani
,
P. M. Ligrani
Von Karman Institute for Fluid Dynamics, Chausse´e de Waterloo, 72 B-1640 Rhode-St.-Genese, Belgium
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C. Camci
C. Camci
Von Karman Institute for Fluid Dynamics, Chausse´e de Waterloo, 72 B-1640 Rhode-St.-Genese, Belgium
Search for other works by this author on:
P. M. Ligrani
Von Karman Institute for Fluid Dynamics, Chausse´e de Waterloo, 72 B-1640 Rhode-St.-Genese, Belgium
C. Camci
Von Karman Institute for Fluid Dynamics, Chausse´e de Waterloo, 72 B-1640 Rhode-St.-Genese, Belgium
J. Heat Transfer. May 1985, 107(2): 313-320 (8 pages)
Published Online: May 1, 1985
Article history
Received:
June 6, 1983
Online:
October 20, 2009
Citation
Ligrani, P. M., and Camci, C. (May 1, 1985). "Adiabatic Film Cooling Effectiveness From Heat Transfer Measurements in Compressible, Variable-Property Flow." ASME. J. Heat Transfer. May 1985; 107(2): 313–320. https://doi.org/10.1115/1.3247416
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