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Mechanical similitude and turbulenceThis report deals with the theory of the vortex street which enables the reproduction of the mechanism of the form resistance with suitable approximation under stated conditions, although such a resistance is precluded in a fluid which is perfectly inviscid. Disregarding for the present the origination of the vortex, the stream attitude in the wake of the body may be described approximately correct by the representation of individual vortices, without transgressing the law governing the motion of such vortices in an ideal fluid. Another striking example is the theory of the induced drag of wings, which likewise shows the extent of applying the vortex equations without overstepping the bounds of the dynamics of ideal fluids.
Document ID
19930094805
Document Type
Other
Authors
Von Karman, TH
Date Acquired
September 6, 2013
Publication Date
March 1, 1931
Report/Patent Number
NACA-TM-611
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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