Transient Free Convection of a Non-Newtonian Fluid Along a Vertical Wall

1988 ◽  
Vol 110 (3) ◽  
pp. 604-607 ◽  
Author(s):  
S. Haq ◽  
C. Kleinstreuer ◽  
J. C. Mulligan
Keyword(s):  
Free Convection ◽  
Newtonian Fluid ◽  
Vertical Wall

Free convection and radiation for a vertical wall with varying temperature embedded in a porous medium

2006 ◽  
Vol 45 (5) ◽  
pp. 487-493 ◽  
Author(s):  
Irfan Anjum Badruddin ◽  
Z.A. Zainal ◽  
P.A. Aswatha Narayana ◽  
K.N. Seetharamu ◽  
Lam Weng Siew
Keyword(s):  
Porous Medium ◽  
Free Convection ◽  
Vertical Wall

Laminar Free Convection on a Curved Wall

1971 ◽  
Vol 38 (4) ◽  
pp. 1081-1083
Author(s):  
K. W. McAlister
Keyword(s):  
Heat Transfer ◽  
Free Convection ◽  
Temperature Variation ◽  
Newtonian Fluid ◽  
Numerical Solutions ◽  
Similarity Solutions ◽  
Governing Equations ◽  
Transfer Rates ◽  
Arbitrary Temperature ◽  
Free Parameters

Laminar free convection of a Newtonian fluid passing over a curved wall having arbitrary temperature variation is considered. The governing equations are presented and the method of free parameters is used to investigate the existence of similarity solutions. It is found that similarity solutions do exist when the wall inclination and temperature are required to be certain functions of the coordinate parallel to the wall. Numerical solutions to several example cases are presented which indicate that higher heat-transfer rates are possible on a wall which is concave with respect to the fluid.

scholarly journals Transient Numerical Analysis of Free Convection in Cylindrical Enclosure

2020 ◽  
Vol 307 ◽  
pp. 01029
Author(s):  
Mohamed Amine Medebber ◽  
Nourddine Retiel ◽  
belkacem Ould said ◽  
Abderrahmane Aissa ◽  
Mohammed El Ganaoui
Keyword(s):  
Free Convection ◽  
Vertical Wall ◽  
Vertical Cylinder ◽  
Geometrical Parameters ◽  
Uniform Temperature ◽  
Governing Equations ◽  
Simpler Algorithm ◽  
Prandtl Numbers ◽  
Volume Method ◽  
Rayleigh Numbers

A transient two dimensional study of free convection in a vertical cylinder partially annulus is conducted numerically. Uniform temperature is imposed cross a vertical wall, while the top and bottom walls are adiabatic. The governing equations are solved numerically by using a finite volume method. The coupling between the continuity and momentum equations is effected using the SIMPLER algorithm. Solutions have been obtained for Prandtl numbers equal to 7.0, Rayleigh numbers of 103to 106and height ratios 0.5. The influence of physical and geometrical parameters on the isotherms, velocity fields, average Nusselt has been numerically investigated.

scholarly journals Oscillatory Free Convection about a Horizontal Circular Cylinder in the Presence of Heat Generation

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Najahulfazliah Zainuddin ◽  
Muhaimin Ismoen ◽  
Rozaini Roslan ◽  
Ishak Hashim
Keyword(s):  
Circular Cylinder ◽  
Free Convection ◽  
Newtonian Fluid ◽  
Heat Generation ◽  
Surrounding Medium ◽  
Surface Shear Stress ◽  
Surface Shear ◽  
Local Skin ◽  
Local Skin Friction ◽  
Horizontal Circular Cylinder

The oscillatory free convection about a horizontal circular cylinder in a Newtonian fluid in the presence of heat generation is investigated numerically by using the finite difference method. The surface temperature of the cylinder oscillates harmonically about the temperature of the surrounding medium. Heat is generated internally within the Newtonian fluid at a rate proportional to a power of the temperature difference. It is found that the presence of heat generation significantly increases the temperature and velocity distribution. The effects of the heat generation parameter and the Prandtl number on the surface rate of heat transfer, in terms of the local Nusselt number, and the surface shear stress, in terms of the local skin friction, are shown graphically from the stagnation point of the circular cylinder.

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