Thermal radiation effects on MHD flow of a micropolar fluid over a stretching surface with variable thermal conductivity

2007 ◽  
Vol 375 (2) ◽  
pp. 401-410 ◽  
Author(s):  
Mostafa A.A. Mahmoud
Keyword(s):  
Thermal Conductivity ◽  
Thermal Radiation ◽  
Micropolar Fluid ◽  
Radiation Effects ◽  
Mhd Flow ◽  
Variable Thermal Conductivity ◽  
Stretching Surface

scholarly journals Hall Current and Thermal Radiation Effects on Heat and Mass Transfer of Unsteady MHD Flow of a Viscoelastic Micropolar Fluid through a Porous Medium

2020 ◽  
Vol 68 (1) ◽  
pp. 1-10
Author(s):  
Lavanya
Keyword(s):  
Mass Transfer ◽  
Porous Medium ◽  
Thermal Radiation ◽  
Micropolar Fluid ◽  
Radiation Effects ◽  
Hall Current ◽  
Perturbation Technique ◽  
Mhd Flow ◽  
Skin Friction Coefficient ◽  
Governing Equations

The present paper is concerned to analyze the effect of hall current on heat and thermal radiation and mass transfer of unsteady MHD flow of a viscoelastic micropolar fluid through a porous medium with chemical reaction. The governing partial differential equations are transformed to dimensionless equations using dimensionless variables. The dimensionless governing equations are then solved analytically using perturbation technique. The effects of various governing parameters on the velocity, temperature, concentration, skin-friction coefficient, Nusselt number and Sherwood number are shown in figures and tables and analyzed in detail.

Effects of Nonlinear Thermal Radiation and Thermo-Diffusion on MHD Carreau Fluid Flow Past a Stretching Surface with Slip

2017 ◽  
Vol 11 ◽  
pp. 57-71 ◽  
Author(s):  
Machireddy Gnaneswara Reddy ◽  
M.V.V.N.L. Sudha Rani ◽  
Oluwole Daniel Makinde
Keyword(s):  
Thermal Conductivity ◽  
Thermal Radiation ◽  
Variable Thermal Conductivity ◽  
Heat Transfer Analysis ◽  
Nonlinear Thermal Radiation ◽  
Stretching Surface ◽  
Flow Equations ◽  
Variable Approach ◽  
Opposite Behavior ◽  
Layer Flow

The boundary layer flow of a heat transfer analysis on Carreau hydro magnetic fluid past a convectively nonlinear stretching surface analyzed. The nonlinear radiation, variable thermal conductivity and thermo diffusion effects are included in energy and species governing equations. The set of dimensionless integrated ordinary differential equations under the boundary restrictions obtained with the help of suitable similarity variable approach. The reduced governing flow equations with the boundary conditions are resolved numerically. Comparisons present results with existing literature and yields nice agreement .The description of results has been analyzed for the flow controlling embedded pertinent parameters by utilizing the plots and tables. It is revealed that energy distribution decays for enhancing values of variable thermal conductivity parameter whereas the opposite behavior to the thermal radiation parameter. The non-dimensional concentration boosts with the ascending values of Soret number.

MHD flow and heat transfer over a stretching surface with variable thermal conductivity and partial slip

Meccanica ◽  
2013 ◽  
Vol 48 (6) ◽  
pp. 1451-1464 ◽  
Author(s):  
Mahantesh M. Nandeppanavar ◽  
K. Vajravelu ◽  
M. Subhas Abel ◽  
M. N. Siddalingappa
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Mhd Flow ◽  
Variable Thermal Conductivity ◽  
Partial Slip ◽  
Stretching Surface ◽  
Flow And Heat Transfer

scholarly journals A brief comparative examination of tangent hyperbolic hybrid nanofluid through a extending surface: numerical Keller–Box scheme

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Wasim Jamshed ◽  
M. Prakash ◽  
S. Suriya Uma Devi ◽  
Rabha W. Ibrahim ◽  
Faisal Shahzad ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Radiation ◽  
Radiation Effects ◽  
Variable Thermal Conductivity ◽  
Weissenberg Number ◽  
Hybrid Nanofluid ◽  
Shape Variation ◽  
Suction Parameter ◽  
Keller Box Method ◽  
Extended Surface

AbstractA novel hybrid nanofluid was explored in order to find an efficient heat-transmitting fluid to replace standard fluids and revolutionary nanofluids. By using tangent hyperbolic hybrid combination nanoliquid with non-Newtonian ethylene glycol (EG) as a basis fluid and a copper (Cu) and titanium dioxide (TiO2) mixture, this work aims to investigate the viscoelastic elements of the thermal transferring process. Flow and thermal facts, such as a slippery extended surface with magnetohydrodynamic (MHD), suction/injection, form factor, Joule heating, and thermal radiation effects, including changing thermal conductivity, were also integrated. The Keller–Box method was used to perform collective numerical computations of parametric analysis using governing equivalences. In the form of graphs and tables, the results of TiO2–Cu/EG hybrid nanofluid were compared to those of standard Cu/EG nanofluid in important critical physical circumstances. The entropy generation study was used to examine energy balance and usefulness for important physically impacting parameters. Detailed scrutiny on entropy development get assisted with Weissenberg number, magnetic parameter, fractional volumes, injection parameter, thermal radiation, variable thermal conductivity, Biot number, shape variation parameter, Reynolds and Brinkman number. Whereas the entropy gets resisted for slip and suction parameter. In this case, spotted entropy buildup with important parametric ranges could aid future optimization.

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