ABSTRACT:
The paper mathematically establishes that magnetohydrodynamic triply diffusive convection, with variable viscosity and with one of the components as heat with diffusivity ?, cannot manifest itself as oscillatory motions of growing amplitude in an initially bottom heavy configuration if the two concentration Rayleigh numbers R_1 and R_2, the Lewis numbers t_1 and t_2 for the two concentrations with diffusivities ?_1 and ?_2 respectively (with no loss of generality ?> ?_(1 )> ?_2), µ_min (the minimum value of viscosity µ in the closed interval [0,1]) and the Prandtl number s satisfy the inequality R_1+R_2=(27p^4)/4 {(µ_min+((t_1+t_2 ))/s)/(1+t_1/(t_2^2 ))} provided D^2 µ is positive everywhere. It is further proved that this result is uniformly valid for any combination of rigid and/or free perfectly conducting boundaries.
Cite this article:
Jyoti Prakash, Rajeev Kumar. A Characterization Theorem in Magnetohydrodynamic Triply Diffusive Convection with Viscosity Variations. Int. J. Tech. 2016; 6(2): 81-86. doi: 10.5958/2231-3915.2016.00012.2
Cite(Electronic):
Jyoti Prakash, Rajeev Kumar. A Characterization Theorem in Magnetohydrodynamic Triply Diffusive Convection with Viscosity Variations. Int. J. Tech. 2016; 6(2): 81-86. doi: 10.5958/2231-3915.2016.00012.2 Available on: https://ijtonline.com/AbstractView.aspx?PID=2016-6-2-4