Mixed layer growth and heat transfer in a stratified fluid heated from below

R. Viskanta, Masud Behnia

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

Abstract

Unsteady natural convection in a nonuniformly stratified, finite depth, layer of water heated from below has been studied. Laboratory experiments were preformed using the Mach-Zehnder interferometer as diagnostic tool for measuring temperature. A shadowgraph technique was used for flow visualization. A simple thermal model is used to predict the dynamics of mixed layer ;which develops when the thermally stratified fluid is heated from below. The model predictions for the mixed layer height agreed to within 5 percent and the mixed layer temperature to within 15 percent of the experimental data obtained in controlled laboratory experiments. The turbulent entrainment processes at the interface between the mixed layer and the stable region must be better understood for more realistic modelling of turbulent natural convection in stratified fluids. (A)

Original languageEnglish
Title of host publicationCondensation heat transfer
Subtitle of host publicationpresented at the 18th National Heat Transfer Conference, San Diego, CA, August 6-8 1979
EditorsP. J. Marto, Peter G. Kroeger
PublisherAmerican Society of Mechanical Engineers (ASME)
Publication statusPublished - 1979
Externally publishedYes
Event18th National Heat Transfer Conference - San Diego, California, United States
Duration: 6 Aug 19798 Aug 1979
Conference number: 18

Conference

Conference18th National Heat Transfer Conference
Abbreviated titleASME 79-HT
CountryUnited States
CitySan Diego, California
Period6/08/798/08/79

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