MHD thermal boundary layer flow of a Casson fluid over a penetrable stretching wedge in the existence of nonlinear radiation and convective boundary condition
| Autor: | Wasim Jamshed, Majid Hussain, Kottakkaran Sooppy Nisar, M.R. Alharthi, Azeem Shahzad, Akhtar Ali, Abdul Ghaffar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Convection
Convective heat transfer 020209 energy 02 engineering and technology 01 natural sciences 010305 fluids & plasmas law.invention Physics::Fluid Dynamics law 0103 physical sciences Heat transfer 0202 electrical engineering electronic engineering information engineering Boundary value problem Casson fluid Convective boundary condition Physics Magnetohydrodynamic generator General Engineering Mechanics Engineering (General). Civil engineering (General) Nusselt number HAM Boundary layer Drag Ohmic heating Stretching porous wedge TA1-2040 |
| Zdroj: | Alexandria Engineering Journal, Vol 60, Iss 6, Pp 5473-5483 (2021) |
| ISSN: | 1110-0168 |
| Popis: | In this paper, we discuss the solution of the magneto hydrodynamics (MHD) thermal boundary layer flow of Casson liquid over a penetrable extending wedge with ohmic heating and convective boundary condition (BC). Important applications of such flows and condition include the MHD pump, radiation therapy, MHD generator, soil mechanics, melt spinning process, thermal insulation and many others. Practical applications of convective BC are often encountered in laser damage or laser processing. The problem is non dimensionalized and computational solutions are achieved for the governing nonlinear coupled ordinary differential equations (PDEs) by using homotopy analysis method (HAM) and influence of various emerging parameters on momentum and temperature field are examined. A table containing computational data for the wall shear stress f ′ ′ ( 0 ) and local Nusselt - θ ′ ( 0 ) number is also provided. Major findings/objectives of the present study are: an increasing in Casson fluid parameter δ decreases velocity when wedge stretches faster than free stream velocity for R = 2 . However, velocity increases for R = 0.1 case. Temperature velocity decreases for R = 2 or R = 0.1 cases for δ escalations. Enhancing B i for convective heat transfer increases the momentum and thermal boundary layer thickness in the presence of suction C. Computational outcomes for velocity, drag force, temperature velocity and heat transfer rate are discussed through tables numerically. Results are verified with varied choices of suction parameter C. It is noted that the convective parameter magnified the heat transfer rate. |
| Databáze: | OpenAIRE |
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