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International Letters of Chemistry, Physics and Astronomy
Volume 55

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Some Aspects of the Three-Dimensional Double-Diffusive Natural Convection in a Parallelepipedic Tilted Solar Distiller

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Abstract:

Three-dimensional double-diffusive natural convection in a parallelepipedic solar distiller inclined with an angle is investigated in the current study. Computations are performed using a home code “NASIM” based on the finite volume method and a full multigrid technique. It is found that iso-surfaces relative to temperature field undergo a central stratification while the lower and upper gradients seem to be significantly strengthened by gradually increasing the Rayleigh number values. In terms of buoyancy ratio effects, projection of thermal and solutal isocontours at the mid plane (y=1) showed that the flow intensity is significantly enhanced by monotonously increasing N for aiding flow situation (N>0). In addition, and according to all Rayleigh number values, the variation of average Nusselt and Sherwood numbers seem to be minimum for N=-1 with weaker values for opposing flow situation. On another hand, isosurfaces of the transverse v-velocity component showed the importance of the 3-D effects that manifest within the solar distiller.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 55)
Pages:
47-58
Citation:
F. Oueslati et al., "Some Aspects of the Three-Dimensional Double-Diffusive Natural Convection in a Parallelepipedic Tilted Solar Distiller", International Letters of Chemistry, Physics and Astronomy, Vol. 55, pp. 47-58, 2015
Online since:
July 2015
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