Visualization of large flow structures at the free-surface of an open channel flow

Woodrow N.L. Roma, John S Gulliver

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The heat produced at the water surface by infrared (IR) radiation and subsequent cooling is used as a tracer to infer characteristics of the large flow structures in an open channel flow. These large flow structures, labeled large streamwise vortices, are visualized at the free surface through the use of an IR video camera during the cooling period. The upwelling regions cool more rapidly than the downwelling regions. The location of large flow structures may be identified because of the upwelling and downwelling character of these flow structures. The length scales of the large flow structures are compared to the scales of the flow field. Copyright ASCE 2004.

Original languageEnglish (US)
Title of host publicationJoint Conference on Water Resource Engineering and Water Resources Planning and Management 2000
Subtitle of host publicationBuilding Partnerships
DOIs
StatePublished - Dec 1 2004
EventJoint Conference on Water Resource Engineering and Water Resources Planning and Management 2000 - Minneapolis, MN, United States
Duration: Jul 30 2000Aug 2 2000

Publication series

NameJoint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
Volume104

Other

OtherJoint Conference on Water Resource Engineering and Water Resources Planning and Management 2000
Country/TerritoryUnited States
CityMinneapolis, MN
Period7/30/008/2/00

Keywords

  • Flow visualization
  • Free surfaces
  • Infrared imaging
  • Large structures
  • Open channel flow
  • Videotape
  • Vortices

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