An experimental study of unsteady natural convection in a reservoir model cooled from the water surface
Bednarz, Tomasz P., Lei, Chengwang, and Patterson, John C. (2008) An experimental study of unsteady natural convection in a reservoir model cooled from the water surface. Experimental Thermal and Fluid Science, 32 (3). pp. 844-856.
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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.
| Item ID: | 6325 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 0894-1777 |
| Keywords: | natural convection; buoyancy; reservoirs; exchance flows; thermo-chromic liquid christals; flow visualization |
| Date Deposited: | 17 Feb 2010 06:04 |
| FoR Codes: | 09 ENGINEERING > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics @ 50% 09 ENGINEERING > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations @ 50% |
| SEO Codes: | 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100% |
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