Numerical study on ion transport and electro-convective mixing of power-law fluid in a heterogeneous micro-constrained channel

2021 ◽  
Vol 33 (12) ◽  
pp. 122014
Author(s):  
A. Haque ◽  
A. K. Nayak ◽  
S. Bhattacharyya
Keyword(s):  
Ion Transport ◽  
Power Law ◽  
Numerical Study ◽  
Power Law Fluid ◽  
Convective Mixing

scholarly journals Flow Induced By A Rotating Microchannel-A Numerical Study

2021 ◽  
Author(s):  
Kashif Ali ◽  
Shahzad Ahmad ◽  
Anique Ahmad ◽  
Faisal Ali
Keyword(s):  
Power Law ◽  
Hartmann Number ◽  
Stokes Equations ◽  
Numerical Study ◽  
Wall Slip ◽  
Future Generation ◽  
Fluid Viscosity ◽  
Power Law Fluid ◽  
Fluid Behavior ◽  
Behavior Index

Abstract In this paper, a mathematical foundation has been developed for the primary understanding of complex interaction of the wall slip with the Coriolis and Lorentz forces acting orthogonally on the Electromagnetohydrodynamic (EMHD) flow of a power-law fluid in a microchannel. Modified Navier Stokes equations are solved numerically by incorporating the fully implicit computational scheme with suitable initial and boundary conditions, which generates numerical results in excellent comparison with the literature for a certain limiting case. An extensive effort has been made to understand how the Hartmann number, fluid behavior index, rotating Reynolds number, and slip parameter affects the flow. Results show the velocity of the power-law fluid depends strongly on flow parameters. Critical Hartmann number can be obtained for the power-law fluid in presence of uniform electric and magnetic fields. As a promising phenomenon, existence of a cross over point (which depends upon the fluid behavior index) for the centerline flow velocity, has also been predicted. Reduction in the shear stress and fluid viscosity can be controlled effectively by incorporating a slippery film of lubricant on the periphery of the microchannel. This work is useful to meet the upcoming challenges of future generation, like improvement in bio-magnetic-sensor technologies as well as electrical and mechanical mechanisms.

Numerical Study on Pulsating Laminar Flow in Annular Space for Power-Law Fluid

2013 ◽  
Vol 394 ◽  
pp. 86-91
Author(s):  
Shan Bo Huang ◽  
Liang Gong ◽  
Zhao Min Li
Keyword(s):  
Laminar Flow ◽  
Power Law ◽  
Numerical Study ◽  
Simple Algorithm ◽  
Petroleum Engineering ◽  
Annular Space ◽  
Reciprocating Motion ◽  
Power Law Fluid ◽  
Liquidity Index ◽  
Axial Pressure Gradient

A mathematical model of pulsating laminar flow inside an annular space for power-law fluid was established basing on the background of petroleum engineering. The characteristic of pulsating flow was obtained by employed SIMPLE algorithm. The investigation result shows that the velocity profile and axial pressure gradient are affected by the frequency, amplitude, liquidity index and annular distance of reciprocating motion and the affection is violent near the inner wall.

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