scholarly journals Analytical study of the Ekman angle for the isothermal flow of a viscous incompressible fluid in view of the Navier boundary condition

2020 ◽  
Author(s):  
A. V. Gorshkov ◽  
E. Yu. Prosviryakov
Keyword(s):  
Boundary Condition ◽  
Incompressible Fluid ◽  
Analytical Study ◽  
Viscous Incompressible Fluid ◽  
Isothermal Flow ◽  
Navier Boundary Condition

Flow of a viscous incompressible fluid after a sudden point impulse near a wall

2009 ◽  
Vol 629 ◽  
pp. 425-443 ◽  
Author(s):  
B. U. FELDERHOF
Keyword(s):  
Boundary Condition ◽  
Incompressible Fluid ◽  
Stokes Equations ◽  
Viscous Incompressible Fluid ◽  
Slip Boundary Condition ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Slip Boundary ◽  
Short Time ◽  
Short Times

The flow of a viscous incompressible fluid generated by a sudden impulse near a wall with no-slip boundary condition is studied on the basis of the linearized Navier–Stokes equations. It turns out that the flow differs significantly from that for the perfect slip boundary condition, except far from the wall and at short times. At short time the flow is irrotational and can be described by a potential which varies with the square root of time. Correspondingly the pressure disturbance is quite large at short times. It shows an oscillation at later times if the impulse is directed parallel to the wall and decays monotonically for impulse perpendicular to the wall.

scholarly journals Entropy generation in an inclined porous channel with suction/injection

2019 ◽  
Vol 9 (1) ◽  
pp. 94-104
Author(s):  
Basant K. Jha ◽  
Taiwo S. Yusuf
Keyword(s):  
Incompressible Fluid ◽  
Closed Form ◽  
Entropy Generation ◽  
Analytical Study ◽  
Viscous Incompressible Fluid ◽  
Porous Channel ◽  
Governing Equations ◽  
Inclined Channel ◽  
Porous Walls ◽  
Irreversibility Ratio

AbstractThe present work is concerned with an analytical study of entropy generation in viscous, incompressible fluid in an inclined channel with porous walls. The solution of the governing equations were obtained in closed form. The expression for the irreversibility ratio was also obtained and the results were presented graphically and extensively discussed for different values of the dimensionless parameters. The result indicates that wall inclination enhance entropy generation.

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