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 language | English |
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Title of host publication | Condensation heat transfer |
Subtitle of host publication | presented at the 18th National Heat Transfer Conference, San Diego, CA, August 6-8 1979 |
Editors | P. J. Marto, Peter G. Kroeger |
Publisher | American Society of Mechanical Engineers (ASME) |
Publication status | Published - 1979 |
Externally published | Yes |
Event | 18th National Heat Transfer Conference - San Diego, California, United States Duration: 6 Aug 1979 → 8 Aug 1979 Conference number: 18 |
Conference
Conference | 18th National Heat Transfer Conference |
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Abbreviated title | ASME 79-HT |
Country/Territory | United States |
City | San Diego, California |
Period | 6/08/79 → 8/08/79 |