2012
DOI: 10.3329/jsr.v5i1.10003
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Terminal Falling Characteristics of a Sand Grain with Dufour and Soret Effects

Abstract: The transient effect of double diffusive natural convection of flow in a differentially heated sand grain with Soret and Dufour coefficients is studied numerically. The right vertical wall has constant temperature T c . The lower inlet opening is heated uniformly with fixed temperature T h and the velocity at the inlet of the fluid domain is set to the falling velocity V i . The condition T h > T c is maintained all over the domain. The concentration in right wall is maintained higher than inlet opening (C c <… Show more

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“…In rectangular cavities at different phase ratios, Gau et al [7] conducted mixed convection with moving isothermal side walls and constant flux as a heat source on the bottom wall. Nasrin and Alim [8] numerically studied transient falling behavior of a sand grain in the presence of Dufour and Soret effects. They considered flow, temperature and concentration fields in terms of streamlines, isotherms and isoconcentration, respectively for various dimensionless times until the steady state was observed.…”
Section: Introductionmentioning
confidence: 99%
“…In rectangular cavities at different phase ratios, Gau et al [7] conducted mixed convection with moving isothermal side walls and constant flux as a heat source on the bottom wall. Nasrin and Alim [8] numerically studied transient falling behavior of a sand grain in the presence of Dufour and Soret effects. They considered flow, temperature and concentration fields in terms of streamlines, isotherms and isoconcentration, respectively for various dimensionless times until the steady state was observed.…”
Section: Introductionmentioning
confidence: 99%