• Palle Kiran
• S.H Manjula
• Y Narasimhulu

A study of thermal instability driven by buoyancy force is carried out in an initially quiescent infinitely extended horizontal rotating fluid layer. The time periodic gravity field is considered and its effect on the system has been investigated. A weakly nonlinear stability analysis is performed for the oscillatory mode of convection, and heat transport in terms of the Nusselt number, which is governed by the complex non-autonomous Ginzburg-Landau equation, is calculated. The influence of external controlling parameters like amplitude and frequency of modulation on heat transfer has been investigated. For lower values of Pr < 1 oscillatory mode of instabilities are possible. The duel effect of rotation on the system for oscillatory mode of convection either is to stabilize or destabilize the system has been found. Further, the study establishes that the heat transport can be controlled effectively by a mechanism that is external to the system. Finally oscillatory mode of convection strengthens the heat transfer rather than stationary mode.

Oscillatory convection; Gravity modulation; Weak nonlinear stability; Rotating fluid layer.

"Oscillatory convection in a rotating fluid layer under gravity modulation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.227-242, August-2018, Available :http://www.jetir.org/papers/JETIRD006034.pdf

"Oscillatory convection in a rotating fluid layer under gravity modulation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp227-242, August-2018, Available at : http://www.jetir.org/papers/JETIRD006034.pdf