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

doi:10.3390/e11010004

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Entropy 2009, 11(1), 4-16; doi:10.3390/e11010004

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

Federico Vázquez¹, Miguel Ángel Olivares-Robles^2,* and Sergio Cuevas³

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

* Author to whom correspondence should be addressed.

Received: 13 November 2008 / Accepted: 22 December 2008 / Published: 28 December 2008

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Abstract: 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.

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

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MDPI and ACS Style

Vázquez, F.; Olivares-Robles, M.Á.; Cuevas, S. Viscoelastic Effects on the Entropy Production in Oscillatory Flow between Parallel Plates with Convective Cooling. Entropy 2009, 11, 4-16.

AMA Style

Vázquez F., Olivares-Robles M.Á., Cuevas S. Viscoelastic Effects on the Entropy Production in Oscillatory Flow between Parallel Plates with Convective Cooling. Entropy. 2009; 11(1):4-16.

Chicago/Turabian Style

Vázquez, Federico; Olivares-Robles, Miguel Ángel; Cuevas, Sergio. 2009. "Viscoelastic Effects on the Entropy Production in Oscillatory Flow between Parallel Plates with Convective Cooling." Entropy 11, no. 1: 4-16.

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