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Type of Document	Dissertation
Author	Richmond, Ronald L.
URN	etd-08242004-093622
Persistent URL	http://resolver.caltech.edu/CaltechETD:etd-08242004-093622
Title	Experimental investigation of thick axially symmetric boundary layers on cylinders at subsonic and hypersonic speeds
Degree	PhD
Option	Aeronautics
Advisory Committee	Advisor Name Title Donald Coles Committee Chair
Keywords	none
Date of Defense	1957-01-01
Availability	unrestricted
Abstract An experimental investigation of the transverse curvature effect on laminar and turbulent axially symmetric boundary layers was conducted in two subsonic wind tunnels and in the GALCIT 5 x 5 inch hypersonic wind tunnel. Subsonic turbulent skin friction coefficients were estimated from velocity profiles with axial flow on a 0.024 inch diameter cylinder and a 1.00 inch diameter cylinder. A considerable increase over the flat plate skin friction coefficient at the same momentum thickness Reynolds number was found. Hypersonic laminar and turbulent skin friction coefficients with axial flow on an insulated 0.250 inch diameter cylinder were measured by the floating element technique and indicated, respectively, several times and 1.5 times the laminar and turbulent flat plate skin friction coefficients at the same momentum thickness Reynolds numbers. Turbulent skin friction coefficients were estimated from pitot profiles with axial flow on a 0.064 inch diameter cylinder and on a 0.024 inch diameter cylinder at M1 = 5.8 and indicate double the value to be found for an insulated flat plate at the same momentum thickness Reynolds number.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    Richmond_rl_1957.pdf 2.89 Mb 00:13:23 00:06:53 00:06:01 00:03:00 00:00:15