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Experimental investigation of thick axially symmetric boundary layers on cylinders at subsonic and hypersonic speeds

Citation

Richmond, Ronald L. (1957) Experimental investigation of thick axially symmetric boundary layers on cylinders at subsonic and hypersonic speeds. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-08242004-093622

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.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Coles, Donald Earl
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1957
Record Number:CaltechETD:etd-08242004-093622
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-08242004-093622
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3213
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:24 Aug 2004
Last Modified:26 Dec 2012 02:58

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