scholarly journals AN UNSTEADY MHD FLOW OF CASSON FLUID PAST AN EXPONENTIALLY ACCELERATED VERTICAL PLATE

2021 ◽  
Vol 51 (4) ◽  
pp. 309-314
Author(s):  
Utpal Jyoti Das
Keyword(s):  
Vertical Plate ◽  
Soret Effect ◽  
Mhd Flow ◽  
Casson Fluid ◽  
Physical Parameters ◽  
Concentration Profiles ◽  
Governing Equations ◽  
First Order ◽  
Order Chemical Reaction ◽  
First Order Chemical Reaction

An unsteady, magnetohydrodynamic, incompressible, radiative Casson fluid flow past an infinite vertical permeable plate, which is accelerated exponentially, in presence of heat sink parameter and first-order chemical reaction taking account of Soret effect, is considered. Governing equations are solved for the profiles of velocity, temperature and concentration with the help of Laplace transform. The effects of various physical parameters on velocity, temperature and concentration profiles are discussed with the help of graphs.

scholarly journals MHD Boundary Layer Flow of Casson Fluid Past an Inclined Plate in the Presence of Soret/Dufour Effects, Heat Source and First-order Chemical Reaction

2021 ◽  
Vol 13 (3) ◽  
pp. 785-795
Author(s):  
U. J. Das
Keyword(s):  
Boundary Layer ◽  
Heat Source ◽  
Boundary Layer Flow ◽  
Casson Fluid ◽  
Inclined Plate ◽  
First Order ◽  
Order Chemical Reaction ◽  
Fluid Parameter ◽  
Layer Flow ◽  
First Order Chemical Reaction

The main objective of this study is to investigate the effects of the Casson fluid parameter on an incompressible, magnetohydrodynamic boundary layer flow of a Casson fluid past a moving porous inclined plate in the presence of heat source and first-order chemical reaction. The governing partial differential equations are converted into ordinary differential equations using similarity transformation and then are solved numerically, adopting bv4pc method. The effects of relevant parameters on the velocity, temperature and concentration profiles are analyzed graphically. Also, tabular form is used to present skin friction, heat transfer and mass transfer. This investigation reveals that the Casson fluid parameter enhances the fluid velocity, skin friction and Sherwood number, while the Nusselt number decreases.

scholarly journals Non-Coaxially Rotating Motion in Casson Martial along with Temperature and Concentration Gradients via First-Order Chemical Reaction

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7784
Author(s):  
Noman Jabbar ◽  
Muhammad Bilal Hafeez ◽  
Sameh Askar ◽  
Umar Nazir
Keyword(s):  
Thermal Radiation ◽  
Chemical Reaction ◽  
Casson Fluid ◽  
Buoyant Force ◽  
First Order ◽  
Order Chemical Reaction ◽  
Secondary Velocity ◽  
First Order Chemical Reaction ◽  
Primary Velocity ◽  
The Impact

The effect of non-coaxial rotation on the transport of mass subjected to first-order chemical reaction is studied analytically. The effects of thermal radiation, buoyancy, constructive and destructive chemical reactions along with Casson fluid in rotating frame are discussed. Time evolution of primary and secondary velocities, energy and solute particles are analyzed. The behavior of flow under the variation of intensity of magnetic field is also investigated. Evolutionary behavior of primary velocity is opposite to the evolutionary behavior of secondary velocity. The impact of buoyant force on primary velocity is opposite to the role of buoyant force on the secondary velocity. The evolutionary behavior of temperature is also examined and a remarkable enhancement in temperature is noticed. Thermal radiation causes the fluid to be cooled down as heat energy is escaped by thermal radiation. Evolutionary behavior of concentration is also analyzed and an increasing of concentration versus time is noted. Destructive chemical reaction results a remarkable reduction in the concentration and vice versa for generative chemical reaction.

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