Couple stress fluid flow with variable properties: A second law analysis

2018 ◽  
Vol 42 (1) ◽  
pp. 85-98 ◽  
Author(s):  
Srinivas Jangili ◽  
Samuel Olumide Adesanya ◽  
Hammed Abiodun Ogunseye ◽  
Ramoshweu Lebelo
Keyword(s):  
Fluid Flow ◽  
Couple Stress ◽  
Couple Stress Fluid ◽  
Second Law ◽  
Variable Properties ◽  
Second Law Analysis

scholarly journals Second law analysis for nonlinear convective flow of a reactive couple stress fluid through a vertical channel

Heliyon ◽  
2018 ◽  
Vol 4 (11) ◽  
pp. e00907 ◽  
Author(s):  
Samuel O. Adesanya ◽  
H.A. Ogunseye ◽  
R.S. Lebelo ◽  
K.C. Moloi ◽  
O.G. Adeyemi
Keyword(s):  
Convective Flow ◽  
Couple Stress ◽  
Vertical Channel ◽  
Couple Stress Fluid ◽  
Second Law ◽  
Second Law Analysis

STABILITY OF COUPLE STRESS FLUID FLOW THROUGH A HORIZONTAL POROUS LAYER

2016 ◽  
Vol 19 (5) ◽  
pp. 391-404 ◽  
Author(s):  
B. M. Shankar ◽  
I. S. Shivakumara ◽  
Chiu-On Ng
Keyword(s):  
Fluid Flow ◽  
Porous Layer ◽  
Couple Stress ◽  
Couple Stress Fluid ◽  
Flow Through

scholarly journals Couple stress fluid flow due to slow steady oscillations of a permeable sphere

2020 ◽  
Vol 9 (1) ◽  
pp. 352-360
Author(s):  
P. Aparna ◽  
P. Padmaja ◽  
N. Pothanna ◽  
J.V. Ramana Murthy
Keyword(s):  
Fluid Flow ◽  
Couple Stress ◽  
Bessel Functions ◽  
Pressure Field ◽  
Flow Region ◽  
Couple Stress Fluid ◽  
Physical Parameters ◽  
External Flows ◽  
Steady Oscillations ◽  
Permeable Sphere

AbstractThe study of oscillating flow of a Couple Stress fluid past a permeable sphere is considered. Analytical solution for the flow field in terms of stream function is obtained using modified Bessel functions. The formula for Drag acting on the sphere due external flow is evaluated. Pressure field for the flow region past and inside the sphere is obtained. Effects of physical parameters like couple stress parameter, permeability, frequency and geometric parameters on the drag due to internal and external flows are represented graphically. It is observed that the drag for viscous fluid flow will be less than the case of couple-stress fluid flow and hence couple stress fluids offer resistance for flow.

scholarly journals Second-law analysis of fluid flow over an isothermal moving wedge

2014 ◽  
Vol 53 (1) ◽  
pp. 1-9 ◽  
Author(s):  
F. Hedayati ◽  
A. Malvandi ◽  
D.D. Ganji
Keyword(s):  
Fluid Flow ◽  
Second Law ◽  
Second Law Analysis ◽  
Moving Wedge

Second Law Analysis of Magneto-Micropolar Fluid Flow Between Parallel Porous Plates

2018 ◽  
Vol 10 (4) ◽  
Author(s):  
Abbas Kosarineia ◽  
Sajad Sharhani
Keyword(s):  
Magnetic Field ◽  
Reynolds Number ◽  
Fluid Flow ◽  
Entropy Generation ◽  
Hartmann Number ◽  
Second Law ◽  
Brinkman Number ◽  
Viscosity Parameter ◽  
Micropolar Fluid Flow ◽  
Second Law Analysis

In this study, the influence of the applied magnetic field is investigated for magneto-micropolar fluid flow through an inclined channel of parallel porous plates with constant pressure gradient. The lower plate is maintained at constant temperature and the upper plate at a constant heat flux. The governing motion and energy equations are coupled while the effect of the applied magnetic field is taken into account, adding complexity to the already highly correlated set of differential equations. The governing equations are solved numerically by explicit Runge–Kutta. The velocity, microrotation, and temperature results are used to evaluate second law analysis. The effects of characteristic and dominate parameters such as Brinkman number, Hartmann Number, Reynolds number, and micropolar viscosity parameter are discussed on velocity, temperature, microrotation, entropy generation, and Bejan number in different diagrams. The results depicted that the entropy generation number rises with the increase in Brinkman number and decays with the increase in Hartmann Number, Reynolds number, and micropolar viscosity parameter. The application of the magnetic field induces resistive force acting in the opposite direction of the flow, thus causing its deceleration. Moreover, the presence of magnetic field tends to increase the contribution of fluid friction entropy generation to the overall entropy generation; in other words, the irreversibilities caused by heat transfer reduced. Therefore, to minimize entropy, Brinkman number and Hartmann Number need to be controlled.

Heat irreversibiility analysis for a couple stress fluid flow in an inclined channel with isothermal boundaries

2019 ◽  
Vol 101 ◽  
pp. 251-258 ◽  
Author(s):  
Samuel O. Adesanya ◽  
Basma Souayeh ◽  
Mohammad Rahimi-Gorji ◽  
M.N. Khan ◽  
O.G. Adeyemi
Keyword(s):  
Fluid Flow ◽  
Couple Stress ◽  
Couple Stress Fluid ◽  
Inclined Channel
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