Modeling of the Surface Convective Layer of Salt-Gradient Solar Ponds

[+] Author and Article Information
Y. S. Cha, W. T. Sha, W. W. Schertz

Argonne National Laboratory, Argonne, Ill. 60439

J. Sol. Energy Eng 104(4), 293-298 (Nov 01, 1982) (6 pages) doi:10.1115/1.3266320 History: Received July 02, 1981; Online November 11, 2009


A one-dimensional numerical model is developed to predict the diurnal variations of vertical temperature and concentration profiles in salt-gradient solar ponds. The model employs augmented thermal and mass diffusivities due to turbulent wind mixing and double-diffusive convection. Numerical results indicate that the thickness of the surface convective layer increases with wind speed (or the wavelength of the surface wave). Double-diffusive convection is, in the absence of wind, capable of sustaining a mixed layer at the surface when strong cooling occurs over the pond. In field ponds, the surface convective layer is probably maintained as a result of the combined action of wind-generated turbulent mixing and double-diffusive convection.

Copyright © 1982 by ASME
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