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Effect on Gaseous Film Cooling of Coolant Injection Through Angled Slots and Normal HolesA study was made to determine the effect of coolant injection angularity on gaseous film-cooling effectiveness. In the correlation of experimental data an effective injection angle was defined by a vector summation of the coolant and mainstream gas flows. The cosine of this angle was used as a parameter to empirically develop a corrective term to qualify a correlating equation presented in Technical Note D-130 that was limited to tangential injection of the coolant. Data were also obtained for coolant injection through rows of holes normal to the test plate. The slot correlating equation was adapted to fit these data by the definition of an effective slot height. An additional corrective term was then determined to correlate these data.
Document ID
19980231068
Acquisition Source
Headquarters
Document Type
Other - NASA Technical Note (TN)
Authors
Papell, S. Stephen
(NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1960
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
E-689
NASA-TN-D-299
Report Number: E-689
Report Number: NASA-TN-D-299
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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