Surface renewal due to large flow structures in open channel flow

Aldo Tamburrino, John S. Gulliver

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

3 Scopus citations

Abstract

It is shown that under certain flow conditions, surface renewal cannot be understood as an exclusive result of the bursting occurring near the wall, as proposed by several authors. Flow visualization in the bulk of the fluid and at the free surface are used in conjunction with filtered turbulence measurements to identify large streamwise vortices as an important transport mechanism in the bulk of the flow. Surface photos indicate that the momentum of the upwelling of large coherent flow structures should not be discounted as an important mechanism of surface renewal through replacement and thinning of the concentration boundary layer near the free surface.

Original languageEnglish (US)
Title of host publicationAir-Water Mass Transfer
PublisherPubl by ASCE
Pages126-139
Number of pages14
ISBN (Print)0872628469
StatePublished - Jan 1 1991
Event2nd International Symposium on Gas Transfer at Water Surfaces - Minneapolis, MN, USA
Duration: Sep 11 1990Sep 14 1990

Other

Other2nd International Symposium on Gas Transfer at Water Surfaces
CityMinneapolis, MN, USA
Period9/11/909/14/90

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