Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
652671 | Experimental Thermal and Fluid Science | 2008 | 13 Pages |
Abstract
The general characteristics of unsteady natural convection flow in a reservoir model cooled from the water surface are presented in this paper. Flow visualization was carried out using thermo-chromic liquid crystals, and quantitative temperature measurements were conducted using a PIT (particle image thermometry) technique. The experimental photographs clearly show different stages of the flow development including the growth of a thermal boundary layer below the water surface, the onset of convective instabilities, and further flow development. The present results indicate that the convective motions in reservoirs induced by night-time cooling have a significant impact on water quality and transport of nutrients and pollutants.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
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Authors
Tomasz P. Bednarz, Chengwang Lei, John C. Patterson,