Double Diffusive Vargination Flows

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Double diffusive convection phenomenon occurs in situations where flow is driven by solutal gradients apart from thermal gradients. Present days in industrial processes like food processing, drying, chemical vapour deposition etc. the nature of fluid flow with in the process chambers largely governs the outcome. Thus research on double diffusive convection flows in relations to various applications in many mechanical and chemical engineering industries and also in fields like oceanography, nuclear technology, renewable energy etc [1-6] became admirable. The research reported in context to double diffusive convection are as flows: Coasta et al. [7] studied the double diffusive convection in a cavity filled with moist air , they presented steady …show more content…
Jin et al.[9] examined the double diffusive convection flow in a cavity with horizontal temperature and concentration gradients . They noticed the effect of operation in different buoyancy ratio regimes on the formation of fluid cells , heat and mass distribution within the cavity. Chen et al. [10] investigated the vortex formations in a 3 dimensional cavity model whose side walls are differentially heated and salted. We et al.[11] studied the convection phenomenon in a cavity with high aspect ratio exposed to heat and moisture. Chena et al.[12] investigated double diffusive convection in a vertical annulus with opposing thermal and solutal gradients. They published the effect of buoyancy ratio and aspect ratio on the vortex formation within the enclosure. Kuznetsov et al.[13] studied double diffusive natural convection in a cubical enclosure of finite wall thickness for different Rayliegh number and conductivity ratio. In this work both convective-radiative heat exchange with the environment is considered at boundaries. Rahman et al. …show more content…
Lid driven cavity problems serves as a simple models to relate to many such industrial problems, the work done in such models is limited in the literature. Amiri et al.[20] conducted numerical experiments on double diffusive convection in a lid driven cavity with its bottom wall kept hot and salted . They observed higher heat transfer rate at low Richardson number while higher mass transfer rates at higher Lewis number. Senthil kumar et al.[21] has attempted a study on double diffusive convection in lid driven cavity model with differentially heated and salted horizontal boundaries. They presented the effect of buoyancy ratio at different Richardson number and Reynolds number on flow, thermo and solutal fields. Mahapatra et al. [22] studied the effect of buoyancy ratio in a lid driven cavity when thermal and concentration gradients are set in orthogonal to each other by maintaining one of the horizontal and vertical walls heated and salted .They observed that fluid convection reduces with increase in buoyancy ratio. A triangular solar collect model was examined and reported the influence of Lewis number at different Richardson numbers [23]. They observed no significant change in heat and fluid flow patterns at lower Richardson number. Similar type

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