THE NATURE OF NATURAL CONVECTION IN BINARY GASES DUE TO HORIZONTAL TEMPERATURE AND VERTICAL CONCENTRATION GRADIENTS |
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| Authors: | J A WEAVER R VISKANTA |
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| Institution: | Heat Transfer Laboratory School of Mechanical Engineering, Purdue University , West Lafayette, Indiana, 47907 |
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| Abstract: | Abstract Results are presented that illustrate the effect of augmenting or opposing thermal and solutal body forces on the flow, temperature and concentration distributions. For augmenting buoyancy forces, the flow field is very similar to that for a single-component fluid. Multicellular flow patterns are observed for opposing buoyancy forces that depend on the buoyancy parameter. The solutal buoyancy force does not dominate the flow field for all values of opposing body forces, because the solutal gradient is vertical. The concentration gradient affects the natural convection through both the additional buoyancy force and the thermophysical properties of the gas mixture. |
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