Viscoelastic Effects on the Entropy Production in Oscillatory Flow between Parallel Plates with Convective Cooling

Entropy

Federico Vázquez¹  Miguel Ángel Olivares-Robles¹ 

[1] ¹Departamento de Fisica, Facultad de Ciencias, UAEM, Cuernavaca, Morelos, 62209, Mexico ²Seccion de Estudios de Posgrado e Investigacion, ESIME-Culhuacan, Instituto Politecnico Nacional, 04430, Mexico ³Departamento de Termociencias, Centro de Investigacion en Energia, Universidad Nacional Autonoma de Mexico, A. .P. 34, Temixco, Morelos 62580, Mexico

关键词: Entropy generation;    Optimization;    Oscillatory flows;    boundary conditions of the third type;   

DOI  :  10.3390/e11010004

来源: mdpi

【 摘 要 】

The heat transfer problem of a zero-mean oscillatory flow of a Maxwell fluid between infinite parallel plates with boundary conditions of the third kind is considered. With these conditions, the amount of heat entering or leaving the system depends on the external temperature as well as on the convective heat transfer coefficient. The local and global time-averaged entropy production are computed, and the consequences of convective cooling of the plates are also assessed. It is found that the global entropy production is a minimum for certain suitable combination of the physical parameters. For a discrete set of values of the oscillatory Reynolds number, the extracted heat from one of the plates shows maxima.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.