Publicou 18 edições por ano
ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561
IF:
1.7
5-Year IF:
1.4
Immediacy Index:
0.6
Eigenfactor:
0.00072
JCI:
0.43
SJR:
0.318
SNIP:
0.568
CiteScore™::
3.5
H-Index:
28
Indexed in
OSCILLATORY SOLUTION OF NATURAL CONVECTION IN A HORIZONTAL ANNULUS WITH A ROTATING INNER CYLINDER
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RESUMO
An oscillatory phenomenon of natural convection in a horizontal annulus is investigated using a thermal immersed boundary–lattice Boltzmann method. Different dimensionless rotating speeds based on the characteristic velocity of convection varied from 0 to 1 are carried out in annuli. We mainly focus on describing this phenomenon and trying to explain the mechanism of it. Our results manifest the existence of oscillatory solutions in in-narrow annuli with rotating inner cylinder. Comparing with convection in a stationary inner cylinder which converges to stable results either single solution or bifurcation solutions, convection in a rotating inner cylinder oscillate between one-peak regime and two-peak regime when the rotating speed is in a special range. It is further found that the oscillatory phenomenon disappears, and the solution converges to a stable result again when the rotating speed is higher or lower than the critical value of this special range.
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