Radiation Induced Thermal Stratification in Surface Layers of Stagnant Water

D. M. Snider; R. Viskanta

doi:10.1115/1.3450284

Journal of Heat Transfer | Volume 97 | Issue 1 | Research Paper

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RESEARCH PAPERS

Radiation Induced Thermal Stratification in Surface Layers of Stagnant Water

D. M. Snider and R. Viskanta

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D. M. Snider, R. Viskanta

School of Mechanical Engineering, Purdue University, West Lafayette, Ind.

J. Heat Transfer 97(1), 35-40 (Feb 01, 1975) (6 pages) doi:10.1115/1.3450284 History: Received August 16, 1974; Online August 11, 2010

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Abstract

Analysis is developed for the time dependent thermal stratification in surface layers of stagnant water by solar radiation. The transient temperature distribution is obtained by solving the one-dimensional energy equation for combined conduction and radiation energy transfer using a finite difference method. Experimentally, solar heating of water is simulated using tungsten filament lamps in parabolic reflectors of known spectral characteristics. The transient temperature distribution resulting from radiant heating of pure water in a glass-walled test cell is measured with a Mach-Zehnder interferometer. Measured and predicted temperature profiles show good agreement, thus verifying the radiation and total energy transfer models in stagnant water. It is found that the boundary condition at the air-water interface and internal radiant heating rate must be correctly specified in order to properly model stratification of water by radiation.

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Snider DM, Viskanta RR. Radiation Induced Thermal Stratification in Surface Layers of Stagnant Water. ASME. J. Heat Transfer. 1975;97(1):35-40. doi:10.1115/1.3450284.

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Radiation Induced Thermal Stratification in Surface Layers of Stagnant Water

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