%0 Journal Article
%T The Character of Entropy Production in Rayleigh¨CB¨Śnard Convection
%A Chenxia Jia
%A Chengjun Jing
%A Jian Liu
%J Entropy
%P 4960-4973
%D 2014
%I MDPI AG
%R 10.3390/e16094960
%X In this study; the Rayleigh¨CB¨Śnard convection model was established; and a great number of B¨Śnard cells with different numbered vortexes were acquired by numerical simulation. Additionally; the B¨Śnard cell with two vortexes; which appeared in the steady B¨Śnard fluid with a different Rayleigh number (abbreviated Ra); was found to display the primary characteristics of the systemĄŻs entropy production. It was found that two entropy productions; which are calculated using either linear theory or classical thermodynamic theory; are all basically consistent when the system can form a steady B¨Śnard flow in the proper range of the Rayleigh numberĄŻs parameters. Furthermore; in a steady B¨Śnard flow; the entropy productions of the system increase alongside the Ra parameters. It was also found that the difference between the two entropy productions is the driving force to drive the system to a steady state. Otherwise; through the distribution of the local entropy production of the B¨Śnard cell; two vortexes are clearly located where there is minimum local entropy production and in the borders around the cellĄŻs areas of larger local entropy production.
%K Rayleigh¨CB¨Śnard convection
%K entropy production
%K B¨Śnard cell
%U http://www.mdpi.com/1099-4300/16/9/4960