scholarly journals Oscillatory Flow and Variable Viscosity by the Heat for the Prandtl -Eyring Fluid through Porous Channel

2021 ◽  
Vol 1999 (1) ◽  
pp. 012095
Author(s):  
Dheia G. Salih Al-Khafajy ◽  
Wedyan A.Muhi Al-Kaabi
Keyword(s):  
Oscillatory Flow ◽  
Variable Viscosity ◽  
Porous Channel

scholarly journals Influence of Temperature and Concentration on MHD Oscillatory Flow for Bingham Fluid with Variable Viscosity Through an inclined channel

2021 ◽  
Vol 26 (4) ◽  
Author(s):  
Safaa Mohammed ◽  
Dheia G. Salih Al-Khafajy
Keyword(s):  
Oscillatory Flow ◽  
Variable Viscosity ◽  
Fluid Velocity ◽  
Momentum Equation ◽  
Bingham Fluid ◽  
Porous Channel ◽  
Equation Solution ◽  
Influence Of Temperature ◽  
Inclined Channel ◽  
Fluid Concentration

In this paper aims, we found the fluid concentration after calculating the velocity and temperature of the fluid with a variable viscosity that depends on the fluid moving through an inclined porous channel. We examined the influences of certain parameters that are active on fluid velocity by analyzing the graphs obtained after we reached the momentum equation solution, and used the MATHEMATICA program for plot the velocity and temperature of the fluid for two types of flow (Poiseuille and Couette).

scholarly journals Effects of (MHD) and wall properties oscillatory flow for williamson fluid with constant viscosity through porous channel

2021 ◽  
Vol 1 (1) ◽  
pp. 94-105
Author(s):  
Zain Alabdeen A.N.ALSAFI ◽  
Ahmed A.H. Al-Aridhee ◽  
Saif Razzaq Al-Waily
Keyword(s):  
Heat Transfer ◽  
Theoretical Model ◽  
Oscillatory Flow ◽  
Porous Channel ◽  
Sinusoidal Wave ◽  
Williamson Fluid ◽  
Wall Properties ◽  
Compliant Wall ◽  
Compliant Walls ◽  
Constant Viscosity

In this research, the williamson flow with heat transfer through the tube of compliant wall properties with slip at boundaries is analyzed analytically. An approximated theoretical model is constructed of springbacked flexible compliant walls pipe, chosen to move as sinusoidal wave

scholarly journals Radiation and Mass Transfer Effects on MHD Oscillatory Flow for Carreau Fluid through an Inclined Porous Channel

2020 ◽  
pp. 1426-1432
Author(s):  
Dheia G. Salih Al-Khafajy
Keyword(s):  
Mass Transfer ◽  
Oscillatory Flow ◽  
Momentum Equation ◽  
Perturbation Series ◽  
Porous Channel ◽  
Reaction Parameter ◽  
Carreau Fluid ◽  
Slant Angle ◽  
Fluid Movement ◽  
Chemical Reaction Parameter

This paper aims to study a mathematical model showing the effects of mass transfer on MHD oscillatory flow for Carreau fluid through an inclined porous channel under the influence of temperature and concentration at a slant angle on the centre of the flow with the effect of gravity. We discussed the effects of several parameters that are effective on fluid movement by analyzing the graphs obtained after we reached the momentum equation solution using the perturbation series method and the MATHEMATICA program to find the numerical results and illustrations. We observed an increased fluid movement by increasing radiation and heat generation while fluid movement decreased by increasing the chemical reaction parameter and Froude number.   

scholarly journals Temperature and Concentration Effects on Oscillatory Flow for Variable Viscosity Carreau Fluid through an Inclined Porous Channel

2021 ◽  
pp. 45-53
Author(s):  
Dheia G. Salih Al-Khafajy ◽  
Jubran Abdulameer Labban
Keyword(s):  
Schmidt Number ◽  
Variable Viscosity ◽  
Nonlinear Partial Differential Equations ◽  
Perturbation Series ◽  
Porous Channel ◽  
Carreau Fluid ◽  
Concentration Effects ◽  
Soret Number ◽  
Number Frequency ◽  
Temperature And Concentration Effects

The aim of this paper is to study the combined effects of the concentration and the thermo-diffusion on the unsteady oscillation flow of an incompressible Carreau fluid through an inclined porous channel. The temperature is assumed to affect exponentially the fluid's viscosity. We studied fluid flow in an inclined channel under the non-slip condition at the wall. We used the perturbation series method to solve the nonlinear partial differential equations. Numerical results were obtained for velocity distribution, and through the graphs, it was found that the velocity of fluid has a direct relation with Soret number, Peclet number, and Grashof number, while it has a reverse variation with chemical reaction, Schmidt number, frequency of oscillation, and Froude number.

Unstable Forced Convection in a Plane Porous Channel With Variable-Viscosity Dissipation

2015 ◽  
Vol 138 (3) ◽  
Author(s):  
A. Barletta ◽  
M. Celli ◽  
A. V. Kuznetsov ◽  
D. A. Nield
Keyword(s):  
Forced Convection ◽  
Flow Instability ◽  
Variable Viscosity ◽  
Wave Number ◽  
Porous Channel ◽  
Temperature Dependent Viscosity ◽  
Longitudinal Modes ◽  
Small Wave Number ◽  
Dependent Viscosity ◽  
Biot Numbers

Fully developed and stationary forced convection in a plane-parallel porous channel is analyzed. The boundary walls are modeled as impermeable and subject to external heat transfer. Different Biot numbers are defined at the two boundary planes. It is shown that the combined effects of temperature-dependent viscosity and viscous heating may induce flow instability. The instability takes place at the lowest parametric singularity of the basic flow solution. The linear stability analysis is carried out analytically for the longitudinal modes and numerically for general oblique modes. It is shown that longitudinal modes with vanishingly small wave number are selected at the onset of instability.

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