Free convective Poiseuille flow through porous medium between two infinite vertical plates in slip flow regime

Pramana ◽  
2020 ◽  
Vol 94 (1) ◽  
Author(s):  
Priya Mathur ◽  
S R Mishra
Keyword(s):  
Porous Medium ◽  
Flow Regime ◽  
Poiseuille Flow ◽  
Slip Flow ◽  
Flow Through ◽  
Slip Flow Regime

scholarly journals Magneto-polar fluid flow through a porous medium of variable permeability in slip flow regime

2016 ◽  
Vol 21 (2) ◽  
pp. 323-339
Author(s):  
P.K. Gaur ◽  
A.K. Jha ◽  
R. Sharma
Keyword(s):  
Heat Transfer ◽  
Porous Medium ◽  
Flow Regime ◽  
Slip Flow ◽  
Skin Friction Coefficient ◽  
Stream Velocity ◽  
Polar Fluid ◽  
Variable Permeability ◽  
Fluid Properties ◽  
Slip Flow Regime

Abstract A theoretical study is carried out to obtain an analytical solution of free convective heat transfer for the flow of a polar fluid through a porous medium with variable permeability bounded by a semi-infinite vertical plate in a slip flow regime. A uniform magnetic field acts perpendicular to the porous surface. The free stream velocity follows an exponentially decreasing small perturbation law. Using the approximate method the expressions for the velocity, microrotation, and temperature are obtained. Further, the results of the skin friction coefficient, the couple stress coefficient and the rate of heat transfer at the wall are presented with various values of fluid properties and flow conditions.

Microscale Flow Through Channels With a Right-Angled Bend: Effect of Fillet Radius

2008 ◽  
Vol 130 (10) ◽  
Author(s):  
V. Raghavan ◽  
B. Premachandran
Keyword(s):  
Flow Regime ◽  
Knudsen Number ◽  
Pressure Ratio ◽  
Slip Flow ◽  
Flow Characteristics ◽  
Velocity Profiles ◽  
Exit Velocity ◽  
Fillet Radius ◽  
Flow Through ◽  
Slip Flow Regime

Microscale gas flow through channels with a right-angled bend has been numerically analyzed to study the effect of the fillet radius on flow characteristics. The flow is assumed to be incompressible, laminar, and hydrodynamically developing. The fillet radius has been varied from zero, representing a sharp corner, to 0.6 times the height of the channel. The Knudsen number has been varied from zero, representing no-slip at the boundary, to 0.1, which is the limiting case for the slip-flow regime. A low Reynolds number of value 1 has been considered in the present study, which makes the flow to be within the incompressible slip-flow regime. The flow characteristics in terms of velocity profiles, velocity vectors, and the pressure ratio between the inlet and outlet of the channel have been presented for several cases. Results show that for the case of the fillet radius equal to zero, the flow separation occurs after the bend and due to this, the exit velocity profile changes significantly. The highest pressure ratio between the inlet and the outlet is required to maintain a specific mass flow rate for this case. The cases with a nonzero fillet radius exhibit exit velocity profiles identical to that of a straight channel. The pressure ratio decreases when the fillet radius and the Knudsen number are increased.

Sign in / Sign up

Export Citation Format

Share Document