scholarly journals Hydromagnetic peristaltic motion of a reacting and radiating couple stress fluid in an inclined asymmetric channel filled with a porous medium

2016 ◽  
Vol 55 (2) ◽  
pp. 1841-1853 ◽  
Author(s):  
M. Gnaneswara Reddy ◽  
K. Venugopal Reddy ◽  
O.D. Makinde
Keyword(s):  
Porous Medium ◽  
Couple Stress ◽  
Couple Stress Fluid ◽  
Asymmetric Channel ◽  
Peristaltic Motion ◽  
Inclined Asymmetric Channel

Hall effects on peristaltic flow of couple stress fluid in an inclined asymmetric channel

2014 ◽  
Vol 07 (05) ◽  
pp. 1450057 ◽  
Author(s):  
T. Hayat ◽  
Maryam Iqbal ◽  
Humaira Yasmin ◽  
Fuad Alsaadi
Keyword(s):  
Couple Stress ◽  
Longitudinal Velocity ◽  
Problem Formulation ◽  
Couple Stress Fluid ◽  
Closed Form Expression ◽  
Asymmetric Channel ◽  
Soret And Dufour Effects ◽  
Field Problem ◽  
Hall Effects ◽  
Inclined Asymmetric Channel

Effect of Hall current on peristaltic transport of couple stress fluid in an inclined asymmetric channel is investigated. An incompressible fluid is conducting in the presence of inclined magnetic field. Problem formulation is developed through heat and mass transfer aspects. Soret and Dufour effects are present. Long wavelength and low Reynolds number approaches are adopted. Closed form expression for longitudinal velocity, pressure gradient, temperature and concentration are presented. Important results reflecting the influence of embedded parameters in the problems have been pointed out. Pumping and trapping phenomena are especially focused.

scholarly journals Dispersion of a solute in peristaltic motion of a couple stress fluid through a porous medium

2012 ◽  
Vol 43 (4) ◽  
pp. 541-555 ◽  
Author(s):  
G. Radhakrishnamacharya ◽  
Habtu Alemayehu
Keyword(s):  
Porous Medium ◽  
Couple Stress ◽  
Reaction Rate ◽  
Dispersion Coefficient ◽  
Heterogeneous Reaction ◽  
Couple Stress Fluid ◽  
Peristaltic Motion ◽  
Rate Parameter ◽  
Effective Dispersion ◽  
Limiting Condition

The paper presents an analytical solution for dispersion of a solute in the peristaltic motion of a couple stress fluid through a porous medium in the presence of both homogeneous and heterogeneous chemical reactions. The average effective dispersion coefficient has been found using Taylor's limiting condition and long wavelength approximation. The effects of various relevant parameters on the average coefficient of dispersion have been studied. The average effective dispersion coefficient increases with permeability parameter but decreases with homogeneous chemical reaction rate parameter, couple stress parameter and heterogeneous reaction rate parameter.

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