Thermal Radiation and Thermodiffusion Effect on Convective Heat and Mass Transfer Flow of a Rotating Nanofluid in a Vertical Channel

2018 ◽  
pp. 73-81
Author(s):  
V. Arundhati ◽  
K. V. Chandra Sekhar ◽  
D. R. V. Prasada Rao ◽  
G. Sreedevi
Keyword(s):  
Mass Transfer ◽  
Thermal Radiation ◽  
Heat And Mass Transfer ◽  
Convective Heat ◽  
Vertical Channel ◽  
Transfer Flow

Diffusion-Thermo Effects on Free Convective Heat and Mass Transfer Flow in a Vertical Channel With Symmetric Boundary Conditions

2011 ◽  
Vol 133 (5) ◽  
Author(s):  
Basant K. Jha ◽  
Abiodun O. Ajibade
Keyword(s):  
Mass Transfer ◽  
Steady State ◽  
Heat And Mass Transfer ◽  
Convective Heat ◽  
Vertical Channel ◽  
Steady State Solution ◽  
Parallel Plates ◽  
Dufour Effect ◽  
Dufour Number ◽  
Transfer Flow

This article investigates the influence of diffusion-thermo effect on transient free convective heat and mass transfer flow in a channel bounded by two infinite vertical parallel plates. Fully developed laminar flow is considered when the boundaries are subjected to symmetric concentration and thermal input. The Dufour effect is taken into consideration. The velocity, temperature, and concentration profiles are obtained analytically using the Laplace transforms technique and used to compute the shear stress, Nusselt number, and mass flux. During the course of computation, it was found that transient solution at large time coincides with steady-state solution derived separately. Diffusion-thermo (Dufour effect) is observed to create an anomalous situation in temperature and velocity profiles for small Prandtl numbers. There is also flow reversal for a small Dufour number and negative values of the sustentation parameter (N). At steady-state, there is neither heat nor mass transfer between the fluid and the plates.

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