Correlation of Theoretical Turbulent Skin Friction with Preston-tube Measurements on a Subsonic Cone
Author : Amir Nassirharand
Publisher :
Page : 248 pages
File Size : 40,24 MB
Release : 1981
Category :
ISBN :
Author : Amir Nassirharand
Publisher :
Page : 248 pages
File Size : 40,24 MB
Release : 1981
Category :
ISBN :
Author : Amir Nassirharand
Publisher : LAP Lambert Academic Publishing
Page : 128 pages
File Size : 38,32 MB
Release : 2010-04
Category :
ISBN : 9783838339054
This publication develops the first correlation equation between the theoretical turbulent skin friction with Preston-tube measurements on a subsonic cone. Lecturers, scientists, and practicing engineers in the field of fluid dynamics should be interested in this development. The goals of this NASA sponsored research are in two fold: (1) to develop a new procedure which could be used to develop a correlation equation for correlating Preston-tube pressure measurements within turbulent boundary layers with the corresponding theoretical values of skin friction coefficient, and (2) to apply the procedure to a ten-degree cone in order to obtain the said correlation equation. The boundary layer conservation of mass, momentum, and energy equations are numerically solved. The inviscid pressure distribution is also numerically determined in order to specify the boundary conditions along the outer edge of the boundary layer. Finally, the Preston- tube pressure measurements are correlated to the corresponding theoretical skin friction coefficient values by means of a least-squares technique.
Author :
Publisher :
Page : 660 pages
File Size : 46,6 MB
Release : 1982
Category : Aeronautics
ISBN :
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author : Ingo Rechenberg
Publisher :
Page : 21 pages
File Size : 33,56 MB
Release : 1964
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ISBN :
Author : J. C. Westkaemper
Publisher :
Page : 13 pages
File Size : 31,57 MB
Release : 1964
Category : Skin friction (Aerodynamics)
ISBN :
This report summarizes work done on the use of the surface impact probe, or Preston tube, method of measuring skin friction in turbulent, compressible boundary layers. The theory for incompressible flow was extended to the case of adiabatic, compressible flow, and the extended theory was experimentally shown to be valid. It has also been demonstrated that the extension is applicable to adiabatic flow with moderate adverse pressure gradients. Experimental and theoretical efforts to apply the impact probe method to compressible flows with moderate, aerodynamic heating were only partially successful. (Author).
Author : United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher :
Page : 966 pages
File Size : 49,84 MB
Release : 1970
Category : Aeronautics
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Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher :
Page : 956 pages
File Size : 21,97 MB
Release : 1970
Category : Science
ISBN :
Author : Kuei-Yuan Chien
Publisher :
Page : 46 pages
File Size : 22,69 MB
Release : 1973
Category : Cone
ISBN :
Turbulent skin-friction coefficients directly measured on an axisymmetric five-degree-half-angle sharp cone by two floating-element skin-friction balances at a free-stream Mach number of 7.9 are presented. Heat-transfer distributions are obtained simultaneously. These results yield directly the Reynolds analogy factor. Experimental data are used to evaluate four predictive methods. Except for the relatively low-Reynolds-number case, the directly measured sharp-cone Reynolds analogy factor is between 1.01 and 1.07, which is in good agreement with recent flat-plate measurements. Results indicate that the Stanton Number is essentially constant for one range and decreases by about 10 percent in another. (Modified author abstract).
Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher :
Page : 962 pages
File Size : 12,96 MB
Release : 1970
Category : Aeronautics
ISBN :
Author : Earl R. Keener
Publisher :
Page : 20 pages
File Size : 43,11 MB
Release : 1969
Category : Aerodynamics, Supersonic
ISBN :
Use of Preston tubes for measuring hypersonic turbulent skin friction.