Publication Type : Journal Article
Publisher : Journal of Molecular Liquids, Elsevier
Source : Journal of Molecular Liquids, Elsevier, Volume 200, p.246 - 258 (2014)
Url : http://www.sciencedirect.com/science/article/pii/S016773221400470X
Keywords : Langevin thermostat, Nanojet, Non-equilibrium molecular dynamics
Campus : Coimbatore
School : Department of Aerospace Engineering, School of Engineering
Department : Aerospace
Year : 2014
Abstract : The behaviour of nano-scale jets emanating from a reservoir under the action of an external force is studied using Langevin dynamics simulations. The advantage of employing a Langevin thermostat to maintain the temperature of the fluid reservoir is highlighted. The effect of hydrodynamic screening introduced by the Langevin thermostat is considered. It is seen that the nature of thermostat plays a crucial role in simulating the onset of instabilities in the liquid structures. A plunger action has been chosen to initiate jet generation. Langevin dynamics is seen to be able to model the physics of nano-scale jets quite accurately. The study also shows that the Langevin dynamics simulations are capable of capturing the dynamics of nano-scale liquid jets, as the nanojet simulated by this method is found to behave in close agreement with the theoretical predictions for nano-scale jets.
Cite this Research Publication : Nandu Gopan and Sarith P. Sathian, “A Langevin Dynamics Study of Nanojets”, Journal of Molecular Liquids, vol. 200, pp. 246 - 258, 2014.