scholarly journals Visualization of natural convection in a horizontal cylindrical annulus by the liquid crystal particle suspension method.

1989 ◽  
Vol 55 (509) ◽  
pp. 146-151
Author(s):  
Kouji MORITA ◽  
Yasutomi MIKl ◽  
Youichirou NAKAMURA ◽  
Tetsuya KONDOH ◽  
Kenji FUKUDA ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Natural Convection ◽  
Particle Suspension ◽  
Cylindrical Annulus ◽  
Crystal Particle

Transient natural convection in a cylindrical annulus

10.2514/3.944 ◽  
1997 ◽  
Vol 11 ◽  
pp. 595-597
Author(s):  
Young-Kil Yu ◽  
Ruey-Hung Chen ◽  
Larry Chew ◽  
K. Ramamurthi ◽  
K. Ravi
Keyword(s):  
Natural Convection ◽  
Transient Natural Convection ◽  
Cylindrical Annulus

Natural Convection in a Porous, Horizontal Cylindrical Annulus

1994 ◽  
Vol 116 (3) ◽  
pp. 621-626 ◽  
Author(s):  
J. P. Barbosa Mota ◽  
E. Saatdjian
Keyword(s):  
Natural Convection ◽  
Initial Conditions ◽  
Hysteresis Loops ◽  
Boussinesq Equations ◽  
Radius Ratio ◽  
Fine Grid ◽  
Cylindrical Annulus ◽  
Alternating Direction ◽  
Fluid Layers ◽  
Horizontal Cylinders

Natural convection in a porous medium bounded by two horizontal cylinders is studied by solving the two-dimensional Boussinesq equations numerically. An accurate second-order finite difference scheme using an alternating direction method and successive underrelaxation is applied to a very fine grid. For a radius ratio above 1.7 and for Rayleigh numbers above a critical value, a closed hysteresis loop (indicating two possible solutions depending on initial conditions) is observed. For a radius ratio below 1.7 and as the Rayleigh number is increased, the number of cells in the annulus increases without bifurcation, and no hysteresis behavior is observed. Multicellular regimes and hysteresis loops have also been reported for fluid layers of same geometry but several differences between these two cases exist.

Effect of magnetic field on natural convection in a vertical cylindrical annulus

2006 ◽  
Vol 44 (20) ◽  
pp. 1556-1570 ◽  
Author(s):  
M. Sankar ◽  
M. Venkatachalappa ◽  
I.S. Shivakumara
Keyword(s):  
Magnetic Field ◽  
Natural Convection ◽  
Cylindrical Annulus
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