scholarly journals Unsteady Hydromagnetic Natural Convection Flow of a Heat Absorbing Fluid within a Rotating Vertical Channel in Porous Medium with Hall Effects

2015 ◽  
Vol 8 (4) ◽  
pp. 767-779 ◽  
Author(s):  
Gauri Seth ◽  
Bidyasagar Kumbhakar ◽  
Rohit Sharma ◽  
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◽  
...  
Keyword(s):  
Porous Medium ◽  
Natural Convection ◽  
Vertical Channel ◽  
Convection Flow ◽  
Natural Convection Flow ◽  
Hall Effects

scholarly journals MHD natural convection flow of Casson fluid in an annular microchannel containing porous medium with heat generation/absorption

2020 ◽  
Vol 9 (1) ◽  
pp. 223-232 ◽  
Author(s):  
B.J. Gireesha ◽  
S. Sindhu
Keyword(s):  
Porous Medium ◽  
Natural Convection ◽  
Skin Friction ◽  
Interaction Parameter ◽  
Heat Generation ◽  
Velocity Slip ◽  
Casson Fluid ◽  
Convection Flow ◽  
Natural Convection Flow ◽  
Wall Interaction

AbstractThis study has been conducted to focus on natural convection flow of Casson fluid through an annular microchannel formed by two cylinders in the presence of magnetic field. The process of heat generation/absorption is taken into consideration. Combined effects of various parameters such as porous medium, velocity slip and temperature jump are considered. Solution of the present mathematical model is obtained numerically using fourth-fifth order Runge-Kutta-Fehlberg method. The flow velocity, thermal field, skin friction and Nusselt number are scrutinized with respect to the involved parameters of interest such as fluid wall interaction parameter, rarefaction parameter, Casson parameter and Darcy number with the aid of graphs. It is established that higher values of Casson parameter increases the skin friction coefficient. Further it is obtained that rate of heat transfer diminishes as fluid wall interaction parameter increases.

Fully developed magnetohydrodynamics natural convection flow in a vertical micro-porous-channel with Hall effects

2019 ◽  
Vol 233 (2-4) ◽  
pp. 73-85
Author(s):  
Basant Kumar Jha ◽  
Peter Bukar Malgwi ◽  
Babatunde Aina
Keyword(s):  
Natural Convection ◽  
Convection Flow ◽  
Line Graphs ◽  
Natural Convection Flow ◽  
Hall Effects ◽  
Undetermined Coefficient ◽  
Flow Directions ◽  
Secondary Velocity ◽  
Energy Equations ◽  
Asymmetric Heating

An exact solution is presented for the steady hydromagnetic fully developed natural convection flow in a vertical microporous channel due to asymmetric heating. The governing momentum and energy equations are presented in dimensionless form and solved analytically using the method of undetermined coefficient. The effects of Hall current and suction/injection parameters on the primary and secondary velocity, volume flow rates, and skin frictions are discussed with the help of line graphs and tables. It is observed that injection accelerates the flow, whereas suction retards the flow in both the primary and secondary flow directions.

scholarly journals Detailed flow development and indicators of transition in a natural convection flow in a vertical channel

2019 ◽  
Vol 143 ◽  
pp. 118502 ◽  
Author(s):  
Martin Thebault ◽  
Stéphanie Giroux-Julien ◽  
Victoria Timchenko ◽  
Christophe Ménézo ◽  
John Reizes
Keyword(s):  
Natural Convection ◽  
Vertical Channel ◽  
Convection Flow ◽  
Natural Convection Flow ◽  
Flow Development
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