scholarly journals The Effects of Magnetic Field on the Fluid Flow through a Rotating Straight Duct with Large Aspect Ratio

2013 ◽  
Vol 56 ◽  
pp. 239-244 ◽  
Author(s):  
Md. Kamruzzaman ◽  
Mohammad Wahiduzzaman ◽  
Md. Mahmud Alam ◽  
Lyazid Djenidi
Keyword(s):  
Magnetic Field ◽  
Fluid Flow ◽  
Aspect Ratio ◽  
Large Aspect Ratio ◽  
Flow Through ◽  
Straight Duct

Numerical study of unsteady fluid flow through a tightly coiled rectangular duct of large aspect ratio

2021 ◽  
Author(s):  
Shamsun Naher Dolon ◽  
Mohammad Sanjeed Hasan ◽  
Ratan Kumar Chanda ◽  
Rabindra Nath Mondal
Keyword(s):  
Fluid Flow ◽  
Aspect Ratio ◽  
Numerical Study ◽  
Large Aspect Ratio ◽  
Rectangular Duct ◽  
Unsteady Fluid Flow ◽  
Flow Through ◽  
Unsteady Fluid

scholarly journals Chemical Entropy Generation and MHD Effects on the Unsteady Heat and Fluid Flow through a Porous Medium

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Gamal M. Abdel-Rahman Rashed
Keyword(s):  
Magnetic Field ◽  
Porous Medium ◽  
Fluid Flow ◽  
Entropy Generation ◽  
Lewis Number ◽  
Heat Transfer Fluid ◽  
Governing Equations ◽  
Flow Through ◽  
Heat And Fluid Flow ◽  
Chemical Reaction Parameter

Chemical entropy generation and magnetohydrodynamic effects on the unsteady heat and fluid flow through a porous medium have been numerically investigated. The entropy generation due to the use of a magnetic field and porous medium effects on heat transfer, fluid friction, and mass transfer have been analyzed numerically. Using a similarity transformation, the governing equations of continuity, momentum, and energy and concentration equations, of nonlinear system, were reduced to a set of ordinary differential equations and solved numerically. The effects of unsteadiness parameter, magnetic field parameter, porosity parameter, heat generation/absorption parameter, Lewis number, chemical reaction parameter, and Brinkman number parameter on the velocity, the temperature, the concentration, and the entropy generation rates profiles were investigated and the results were presented graphically.

Plasma equilibrium in toroidal l = 3 stellarators

1980 ◽  
Vol 24 (3) ◽  
pp. 453-478 ◽  
Author(s):  
P. J. Fielding ◽  
W. N. G. Hitchon
Keyword(s):  
Magnetic Field ◽  
Aspect Ratio ◽  
Plasma Pressure ◽  
Large Aspect Ratio ◽  
Plasma Equilibrium ◽  
Density Profiles ◽  
Vertical Field ◽  
Mhd Equilibrium ◽  
Vacuum Fields

The equations of MHD equilibrium are solved by including plasma pressure and current in a large aspect-ratio ordering scheme for the calculation of toroidal, l = 3 stellarator vacuum fields. The extended ordering unifies the low-beta equilibrium theory for tokamaks and l = 3 stellarators, and allows solutions to be obtained simply for arbitrarily prescribed pressure and current density profiles. Expressions are given for the equilibrium magnetic field and the equation for the flux surfaces is calculated, including the effects of l = 3 shaping and toroidal displacement. These results are used to calculate equilibria for the parameters of CLEO stellarator, and we examine the role of an externally applied vertical field in reducing pressure-induced flux surface distortion and destruction.

Flow through curved rectangular channels of large aspect ratio

AIChE Journal ◽  
1995 ◽  
Vol 41 (5) ◽  
pp. 1061-1070 ◽  
Author(s):  
Matthew J. Targett ◽  
William B. Retallick ◽  
Stuart W. Churchill
Keyword(s):  
Aspect Ratio ◽  
Large Aspect Ratio ◽  
Rectangular Channels ◽  
Flow Through
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