Mixed convective hybrid nanofluid flow in lid-driven undulated cavity: effect of MHD and Joule heating
Dublin Core
Title
Mixed convective hybrid nanofluid flow in lid-driven undulated cavity: effect of MHD and Joule heating
Subject
Hybrid nanofluid
mixed convection
MHD
Joule heating
undulated cavity
finite element
method
heat transfer
Description
A numerical analysis has been conducted to show the effects of magnetohydrodynamic (MHD) and Joule heating on heat transfer phenomenon in a lid driven triangular cavity. The heat transfer fluid (HTF) has been considered as water based hybrid nanofluid composed of equal quantities of Cu and TiO2 nanoparticles. The bottom wall of the cavity is undulated in sinusoidal pattern and cooled isothermally. The left vertical wall of the cavity is heated while the inclined side is insulated. The two dimensional governing partial differential equations of heat transfer and fluid flow with appropriate boundary conditions have been solved by using Galerkin's finite element method built in COMSOL Multyphysics. The effects of Hartmann number, Joule heating, number of undulation and Richardson number on the flow structure and heat transfer characteristics have been studied in details. The values of Prandtl number and solid volume fraction of hybrid nanoparticles have been considered as fixed. Also, the code validation has been shown. The numerical results have been presented in terms of streamlines, isotherms and average Nusselt number of the hybrid nanofluid for different values of governing parameters. The comparison of heat transfer rate by using hybrid nanofluid, Cu-water nanofluid, TiO2 -water nanofluid and clear water has been also shown. Increasing wave number from 0 to 3 enhances the heat transfer rate by 16.89%. The enhanced rate of mean Nusselt number for hybrid nanofluid is found as 4.11% compared to base fluid.
Creator
Zahan, Ishrat
Nasrin, R
Alim, M A
Source
Journal of Naval Architecture and Marine Engineering; Vol. 16 No. 2 (2019); 109-126
2070-8998
1813-8535
Publisher
Association of Naval Architects and Marine Engineers
Date
2019-12-31
Rights
Copyright (c) 2019 Journal of Naval Architecture and Marine Engineering
Relation
Format
application/pdf
Language
eng
Type
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Identifier
Citation
Ishrat Zahan, R Nasrin and M Alim A, Mixed convective hybrid nanofluid flow in lid-driven undulated cavity: effect of MHD and Joule heating, Association of Naval Architects and Marine Engineers, 2019, accessed November 22, 2024, https://igi.indrastra.com/items/show/3308