University of Illinois Urbana-Champaign

Counter Rotating Vortices

Gibson, Allison

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https://hdl.handle.net/2142/89972

Description

Title
Counter Rotating Vortices
Author(s)
Gibson, Allison
Contributor(s)
Chamorro, Leonardo P.
Issue Date
2016-04
Keyword(s)
  • Fluids
  • Vortices
  • Heat Transfer
  • Mechanical Science
  • MechSe
Date of Ingest
2016-04-19T16:21:20Z
Abstract
A common method to enhance convective heat transfer is to utilize vortex-generating compact slender structures. When a vortex generator is placed in the streamwise direction of a flowing fluid, a pressure drop develops between the mean flow of the fluid and the wake region immediately downstream from the vortex generator. This pressure drop gives rise to a counter-rotating vortex pair (CVP). This CVP is a primary structure within the wake that governs and enhances mixing, while improving the heat transfer coefficient. The figure on the left shows the formation of a CVP as the fluid flows over a rectangular vortex generator located at x = -50 mm. The vectors show the fluid forming two distinct circulation zones that mirror one and other. The figure on the right shows that the CVP (shown with vorticity iso-sufaces) is prevalent in the near-wake for a significant distance downstream from the vortex generator until it eventually takes a more complex form downstream. By better understanding turbulent flows and vortex behavior, the overall efficiency of heat transfer can be greatly improved. For more information about the Image of Research--Undergraduate Edition go to: http://go.library.illinois.edu/imageofresearch_uredition
Type of Resource
  • text
  • image
Genre of Resource
Photograph
Permalink
http://hdl.handle.net/2142/89972
Copyright and License Information
Copyright 2016 Allison Gibson

Owning Collections

Image of Research - Undergraduate Students PRIMARY