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Effects of unsteady free-stream velocity and free-stream turbulence at a stagnation pointThe combined effects of transient free stream velocity and turbulence at a stagnation point on a cylinder situated in a crossflow is investigated analytically, and a model is formulated for the eddy diffusivity induced by free-stream turbulence. The steepest descent method is used to integrate the governing momentum expression, and numerical solutions are given for the unsteady wall shear stress function for specific free-stream transients. It is found after correlation of the results by means of a new turbulence parameter that wall friction increases with increasing free-stream turbulence intensity, and that the friction factor increases with increasing reduced frequency of oscillation values.
Document ID
19820051784
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gorla, R. S. R.
(Cleveland State University Cleveland, OH, United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1982
Subject Category
Aerodynamics
Report/Patent Number
ASME PAPER 82-GT-69
Meeting Information
Meeting: International Gas Turbine Conference and Exhibit
Location: London
Start Date: April 18, 1982
End Date: April 22, 1982
Sponsors: American Society of Mechanical Engineers
Accession Number
82A35319
Funding Number(s)
CONTRACT_GRANT: NCC3-3
Distribution Limits
Public
Copyright
Other

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