Skin Friction at Very High Reynolds Numbers in the National Transonic Facility
作者： John B. Anders , Ralph D. Watson , Robert M. Hall
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摘要: Abstract …………………………………………………………………...…………………………. 1Symbols ………………………………………………………………………..……………………. 1Introduction ………...……………………………………………………………..………………… 4Experiment Design Considerations ……………………...…………………………..….……….….. 5 Flat Plate Skin Friction Methods …………………………..…….…………………...…..…….… 6 Initial Finite-difference Calculations …………………………………....………..…..………….. 8 Existing High Reynolds Number Data …………………….………………….…… Factors Affecting Measurements: ………………………...………………………... 9 Compressibility Effects …………………………………………………………..…………….. Pressure Gradient ………………………………………..………………..….……...…. Heat Transfer …………………………………………………………..…..…..……… 10 Transverse Curvature ……………….……...………………………….……….…..…. Surface Roughness …………………….………………………….…….…….….……. 11 Spanwise Nonuniformity ………..….…………………………………..…….……..... Errors Due to Above …………..……..……...…...………...……….……………...…. 12Facility, Model, Instrumentation, Reduction, and Instrumentation Measurement .. 12 Facility ………………..……………………………………………………….……………....… Model ………………………………………………………….…………………………………. ………..……………...……………………………………………….…..…..… 14 Reduction ……………………………………………………………………………...….. 15 Calculation of Real Gas Flow Properties ………….……….……………………………......… Preston Tube …………………….……….…………………………….…...... 16 Boundary Layer Profile ………………..………………………..…….…...… ……………...………………………….………..…… 18Results And Discussion ………………………………………..…….…………………….……..... 19 Local Conditions ……………………………..……………………………………....……. Alignment ……………………………………………...………………………….…….... Pressures Temperatures …………………………………………………….….....….. Rake ……………………………….………………….…….….………... 20 ………………………………………..……………………….……...….….. 21 Balance ……………………………………………….………………………….…..…..…. Comparison ……………..………………………………….…. 22
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