Viscous Dissipation Impact on Free Convection Flow of Cu-water Nanofluid in a Circular Enclosure with Porosity Considering Internal Heat Source

• Published in: Journal of applied and computational mechanics Vol. 5; no. 4; pp. 717 - 726
• Main Authors: Abdul Sattar Dogonchi, Ali J. Chamkha, Seyyed Masoud Seyyedi, Mehdi Hashemi-Tilehnoee, Davood Domiri Ganji
• Format: Journal Article
• Language: English
• Published: Shahid Chamran University of Ahvaz 01.06.2019
• Subjects: CVFEM; Free convection of nanofluid; Nusselt number; Porous circular enclosure; Viscous dissipation
• ISSN: 2383-4536; 2383-4536
• DOI: 10.22055/jacm.2019.27465.1402

In this work, free convection of Cu-water nanofluid in an enclosure by considering internally heat generated in the porous circular cavity and the impacts of viscous dissipation are numerically evaluated by control volume finite element method (CVFEM). The outer and inner sides of the circular porous enclosure are maintained at a fixed temperature while insulating the other two walls. The impacts of diverse effective parameters including the Rayleigh number, viscous dissipation, and nanofluid concentration on features of heat transfer and fluid flow are examined. Moreover, a new correlation for the average Nusselt number is developed according to the study’s active parameters. It can be deduced by the results that the maximum value of the temperature is proportional to the viscous dissipation parameter.