NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 45 of 585
The production of turbulent stress in a shear flow by irrotational fluctuations
Author and Affiliation:
Gartshore, I. S.(British Columbia, University, Vancouver, Canada)
Durbin, P. A.(NASA Lewis Research Center, Cleveland, OH, United States)
Hunt, J. C. R.(Cambridge University, Cambridge, United Kingdom)
Abstract: This paper examines, both theoretically and experimentally, the effect produced by irrotational fluctuations, associated with a nearby turbulent field, in a region where the turbulence is initially very low but where there is a mean shear. Calculations are based on rapid distortion theory and experiments use linearized hot wire anemometers in an open circuit wind tunnel. Turbulent shear stress is observed to grow from zero to significant values in the interaction region. The magnitude and extent of this observed shear stress agree reasonably well with predictions of the analysis, when intermittency effects are included. It is concluded that turbulent stresses can be produced by irrotational fluctuations in a region of mean shear and that this effect can be estimated using rapid distortion theory if the overall strain ratio is not large.
Publication Date: Jan 01, 1983
Document ID:
19840035570
(Acquired Nov 28, 1995)
Accession Number: 84A18357
Subject Category: FLUID MECHANICS AND HEAT TRANSFER
Document Type: Conference Paper
Publication Information: (SEE A84-18326 06-34)
Publisher Information: Germany
Financial Sponsor: NASA; United States
Organization Source: British Columbia Univ.; Vancouver British Columbia, Canada
NASA Lewis Research Center; Cleveland, OH, United States
Cambridge Univ.; Cambridge, United Kingdom
Description: 11p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: POTENTIAL FLOW; SHEAR FLOW; SHEAR STRESS; TURBULENT FLOW; FLOW DISTORTION; HOT-WIRE ANEMOMETERS; REYNOLDS STRESS; STRESS DISTRIBUTION
Imprint And Other Notes: IN: Structure of complex turbulent shear flow; Proceedings of the Symposium, Marseille, France, August 31-September 3, 1982 (A84-18326 06-34). Berlin, Springer-Verlag, 1983, p. 388-398.
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 17, 2011
Contact Us