scholarly journals Mixed convection flow of Oldroyd-B nano fluid with Cattaneo-Christov heat and mass flux model with third order slip

AIP Advances ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 125023
Author(s):  
Wubshet Ibrahim ◽  
Gemechis Sisay ◽  
Dachasa Gamachu
Keyword(s):  
Mixed Convection ◽  
Mass Flux ◽  
Convection Flow ◽  
Mixed Convection Flow ◽  
Third Order ◽  
Nano Fluid ◽  
Flux Model

Nonlinear stability of mixed convection flow under non-Boussinesq conditions. Part 2. Mean flow characteristics

1999 ◽  
Vol 398 ◽  
pp. 87-108 ◽  
Author(s):  
S. A. SUSLOV ◽  
S. PAOLUCCI
Keyword(s):  
Mixed Convection ◽  
Mass Flux ◽  
Flow Characteristics ◽  
Vertical Channel ◽  
Physical Nature ◽  
Reynolds Numbers ◽  
Convection Flow ◽  
Mixed Convection Flow ◽  
Mean Flow ◽  
Wide Range

Based on amplitude expansions developed in Part 1 (Suslov & Paolucci 1999), we examine the mean flow characteristics of non-Boussinesq mixed convection flow of air in a vertical channel in the vicinity of bifurcation points for a wide range of temperature differences between the walls, and Grashof and Reynolds numbers. The constant mass flux and constant pressure gradient formulations are shown to lead to qualitatively similar, but quantitatively different, results. The physical nature of the distinct shear and buoyancy disturbances is investigated, and detailed mean flow and energy analyses are presented. The variation of the total mass of fluid in a flow domain as disturbances develop is discussed. The average Nusselt number and mass flux are estimated for supercritical regimes for a wide range of governing parameters.

Influence of Catteneo-Christov Heat Flux Model on Mixed Convection Flow of Third Grade Nanofluid over an Inclined Stretched Riga Plate

2018 ◽  
Vol 387 ◽  
pp. 121-134 ◽  
Author(s):  
Manoj Kumar Nayak ◽  
A.K. Abdul Hakeem ◽  
Oluwole Daniel Makinde
Keyword(s):  
Heat Flux ◽  
Mixed Convection ◽  
Fluid Velocity ◽  
Third Grade ◽  
Convection Flow ◽  
Mixed Convection Flow ◽  
Linear Temperature ◽  
Riga Plate ◽  
Flux Model ◽  
Heat Flux Model

Nature of the very idea of Cattaneo-Christov heat flux model and its influence on the mixed convection flow of third grade nanofluid subject to inclined stretched Riga plate has been studied. The study furthers the case for introducing temperature dependent viscosity modeled by Reynolds. A numerical solution of the transformed boundary layer equations has been accomplished by fourth order R-K and shooting methods. The study itself has pointed out that buoyancies (thermal as well as solutal) and viscosity parameters augment the fluid velocity while increase in Deborah number yields unperturbed diminishing trend of non-linear temperature profiles.

Sign in / Sign up

Export Citation Format

Share Document