Entropy generation minimization (EGM) in magneto peristalsis with variable properties. (April 2020)

• Record Type: Journal Article
• Authors: Farooq, S.; Hayat, T.; Khan, M. Ijaz; Alsaedi, A.
• Is Part Of: Computer methods and programs in biomedicine. Volume 186(2020)
• Publication Date: 2020-04
• Subjects: Hydromagnetic viscous material -- Porous curved configuration -- Variable viscosity and thermal conductivity -- EGM -- Velocity and thermal slip aspects; Medicine -- Computer programs -- Periodicals; Biology -- Computer programs -- Periodicals; Computers -- Periodicals; Medicine -- Periodicals; Médecine -- Logiciels -- Périodiques; Biologie -- Logiciels -- Périodiques; Biology -- Computer programs; Medicine -- Computer programs; Periodicals; Electronic journals; 610.28
• DOI: 10.1016/j.cmpb.2019.105045
• Languages: English
• ISSNs: 0169-2607

Abstract

Highlights: Entropy generation is considered. Fluid is flowing through peristalticlly curved configuration. Porosity effects are also examined. Velocity and thermal slip aspects are taken at channel walls. Viscosity and thermal conductivity are taken temperature dependent. Abstract: Objective and background: This article featuring the peristaltic transport of viscous material with variable properties (i.e. temperature dependent viscosity and thermal conductivity) through curved configuration. Fluid saturating through porous channel walls of uniform space. Entropy generation consideration here is to analyze irreversibility aspects. Channel boundaries retain the velocity and thermal slip conditions. Method: Wave frame of reference is attained with the utilization of long wavelength and small Reynolds number approach. Solution of the simplified coupled system of dimensionless constraints is obtained numerically. Detailed analysis of important quantities of interest has been presented in discussion portion. Results: Entropy generation variation near center is very small whereas in the vicinity of the channel wall is larger. Bejan number has reverse variation as observed for entropy generation. Conclusion: Variable characteristics of viscosity has opposite impact on velocity and temperature is observed. It is also noticed small irreversibility effects are obtained for higher varying viscosity and thermal conductivity near the vicinity of the channel walls.