scholarly journals Unstable spectrum of a Rayleigh–Bénard system with variable viscosity

2021 ◽  
Vol 359 (9) ◽  
pp. 1165-1178
Author(s):  
Olivier Lafitte
Keyword(s):  
Variable Viscosity ◽  
Rayleigh Benard ◽  
Bénard System

Strange nonchaotic attractors in the externally modulated Rayleigh–Bénard system

2004 ◽  
Vol 20 (5) ◽  
pp. 1141-1148 ◽  
Author(s):  
E.J.Ngamga Ketchamen ◽  
L Nana ◽  
T.C Kofane
Keyword(s):  
Strange Nonchaotic Attractors ◽  
Rayleigh Benard ◽  
Bénard System

Non-linear Rayleigh-Benard Magnetoconvection in Temperature-sensitive Newtonian Liquids with Variable Heat Source

2021 ◽  
Vol 88 (1-2) ◽  
pp. 08
Author(s):  
A. S. Aruna ◽  
V. Ramachandramurthy ◽  
N. Kavitha
Keyword(s):  
Rayleigh Number ◽  
Heat Source ◽  
Variable Viscosity ◽  
Critical Rayleigh Number ◽  
Lorenz Model ◽  
Onset Of Convection ◽  
Variable Heat ◽  
Non Linear ◽  
Source Sink ◽  
Rayleigh Benard

The present paper aims at weak non-linear stability analysis followed by linear analysis of nite-amplitude Rayleigh-Benard magneto convection problem in an electrically conducting Newtonian liquid with heat source/sink. It is shown that the internal Rayleigh number, ther- morheological parameter, and the Chandrasekhar number in uence the onset of convection. The generalized Lorenz model derived for the prob- lem is essentially the classical Lorenz model but with some coecient depending on the variable heat source (sink), viscosity, and the applied magnetic eld. The result of the parameters' in uence on the critical Rayleigh number explains their in uence on the Nusselt number. It is found that an increasing strength of the magnetic eld is to stabilize the system and diminishes heat transport whereas the heat source and variable viscosity in-tandem to work system unstable and enhances heat transfer.

Sign in / Sign up

Export Citation Format

Share Document