RADIATIVE NANOFLUID FLOW DUE TO UNSTEADY BI-DIRECTIONAL STRETCHING SURFACE WITH CONVECTIVE AND ZERO MASS FLUX BOUNDARY CONDITIONS: USING KELLER BOX SCHEME

2020 ◽  
Vol 12 (4) ◽  
pp. 361-385 ◽  
Author(s):  
Muhammad Faisal ◽  
Iftikhar Ahmad ◽  
Tariq Javed
Keyword(s):  
Boundary Conditions ◽  
Mass Flux ◽  
Stretching Surface ◽  
Nanofluid Flow ◽  
Zero Mass ◽  
Box Scheme ◽  
Flux Boundary Conditions

Three-dimensional flow of Powell–Eyring nanofluid with heat and mass flux boundary conditions

2016 ◽  
Vol 25 (7) ◽  
pp. 074701 ◽  
Author(s):  
Tasawar Hayat ◽  
Ikram Ullah ◽  
Taseer Muhammad ◽  
Ahmed Alsaedi ◽  
Sabir Ali Shehzad
Keyword(s):  
Boundary Conditions ◽  
Mass Flux ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Flux Boundary Conditions

Influences of Zero Mass Flux and Active Conditions on the Predictions of Double Dispersion and Double Diffusive Boundary Layer in Darcy/Non Darcy Nanofluid Flow

2021 ◽  
Vol 57 ◽  
pp. 49-65
Author(s):  
Amina Manel Bouaziz ◽  
M.N. Bouaziz ◽  
A. Aziz
Keyword(s):  
Porous Medium ◽  
Mass Flux ◽  
Transfer Rate ◽  
Volume Fraction ◽  
Mass Transfer Rate ◽  
Flow In Porous Media ◽  
Nanofluid Flow ◽  
Realistic Condition ◽  
Zero Mass ◽  
Flux Condition

Free convective of nanofluid inside dispersive porous medium adjacent to a vertical plate under the effects of the zero mass nanoparticles flux condition and the thermal and solutal dispersions is studied. Buongiorno's model revised is used considering Darcy and non Darcy laminar flows, and isothermal or convective flux outer the wall. Dimensionless governing equations formulated using velocity, temperature, concentration and nanoparticle volume fraction have been solved by finite difference method that implements the 3-stage Lobatto collocation formula. The numerical data obtained with semi or full dispersions cases are compared to predictions made using the non dispersive porous medium. Taking into account the dispersions, the influence of the zero mass nanoparticles flux condition is examined to test the validity of the control active nanoparticle assumption. It is found mainly that the thermal transfers can reach more than 100% in connection with the case where of a semi-dispersion of the porous medium is applied. Realistic condition, i.e. zero mass flux should be addressed for the heat transfer rate rather than the mass transfer rate, discovered markedly different to the active condition. This signifies the importance of considering the zero nanoparticles mass flux and dispersions in the performance characterization of nanofluid flow in porous media.

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