Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall

Numerical simulation of turbulent combined convective heat transfer of nanofluid flow over a two-dimensional horizontal backward-facing step (BFS) with baffle on its upper wall are carried out. The Reynolds number used in this study ranged from 7500 to 10000. The heating process corresponds to a cha...

Full description

Saved in:

Bibliographic Details
Main Author:	Mohajeri, Hossein
Format:	Thesis
Published:	2014
Subjects:	QC Physics
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.48375
record_format	uketd_dc
spelling	my-utm-ep.483752017-08-01T04:30:30Z Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall 2014 Mohajeri, Hossein QC Physics Numerical simulation of turbulent combined convective heat transfer of nanofluid flow over a two-dimensional horizontal backward-facing step (BFS) with baffle on its upper wall are carried out. The Reynolds number used in this study ranged from 7500 to 10000. The heating process corresponds to a channel heated from below at constant temperature keeping all other channel walls insulated. The momentum and energy equations were discretized by means of a finite volume technique. The SIMPLE algorithm scheme was applied to link the pressure and velocity fields inside the domain for four different types of nanoparticles, TiO2, Al2O3, CuO, and SiO2, with 3 % volume fraction and particle diameter of 20nm in a base fluid (water). In this thesis, several parameters such as Reynolds number, types of nanoparticle with different shapes( spherical, cylindrical, and plate)are investigated to identify their effects on the flow and thermal fields over BFS geometries. The numerical results indicate that nanofluids with low density nanoparticles such as SiO2withplate shape of nanoparticles has higher velocity than those with high density nanoparticles such as CuO. The two types of nanofluid achieved higher Nusselt number than other nanofluids. The result of Nusselt number shows that with using nanofluid the Nusselt number increases 16% and subsequently heat transfer increases 2014 Thesis http://eprints.utm.my/id/eprint/48375/ masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
topic	QC Physics
spellingShingle	QC Physics Mohajeri, Hossein Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall
description	Numerical simulation of turbulent combined convective heat transfer of nanofluid flow over a two-dimensional horizontal backward-facing step (BFS) with baffle on its upper wall are carried out. The Reynolds number used in this study ranged from 7500 to 10000. The heating process corresponds to a channel heated from below at constant temperature keeping all other channel walls insulated. The momentum and energy equations were discretized by means of a finite volume technique. The SIMPLE algorithm scheme was applied to link the pressure and velocity fields inside the domain for four different types of nanoparticles, TiO2, Al2O3, CuO, and SiO2, with 3 % volume fraction and particle diameter of 20nm in a base fluid (water). In this thesis, several parameters such as Reynolds number, types of nanoparticle with different shapes( spherical, cylindrical, and plate)are investigated to identify their effects on the flow and thermal fields over BFS geometries. The numerical results indicate that nanofluids with low density nanoparticles such as SiO2withplate shape of nanoparticles has higher velocity than those with high density nanoparticles such as CuO. The two types of nanofluid achieved higher Nusselt number than other nanofluids. The result of Nusselt number shows that with using nanofluid the Nusselt number increases 16% and subsequently heat transfer increases
format	Thesis
qualification_level	Master's degree
author	Mohajeri, Hossein
author_facet	Mohajeri, Hossein
author_sort	Mohajeri, Hossein
title	Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall
title_short	Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall
title_full	Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall
title_fullStr	Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall
title_full_unstemmed	Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall
title_sort	combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2014
_version_	1747817374914969600

Combined convective heat transfer of nano fluids flow over triple backward facing step having baffle on its upper wall

Similar Items