Numerical study of natural convection for cu and tio 2 nanofluids inside different enclosures

Sahar A. Abbood, Jin Wang, Zan Wu, Bengt Sundén

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

In this study, steady-state laminar natural convection of Cu and TiO 2 nanofluids inside different enclosures is numerically investigated. Natural convection is concerned due to a temperature difference between the hot and cold surfaces. The Boussinesq approximation is used to form the governing equations and the commercial software package ANSYS Fluent version 14.0 is used to numerically solve the governing equations. The temperature profiles and flow patterns at different Rayleigh numbers, i.e., 10 4 , 10 5 and 10 6 are studied and compared for the different curved geometries which are 1/8, 2/8 and 3/8 from the height of the enclosure. Heat transfer coefficients are presented for the enclosures with different nanofluid concentrations. The nanoparticles enhance the heat transfer. The heat transfer enhancement increases with increasing nanoparticle concentrations. A new curved enclosure is suggested to augment heat transfer.

Original languageEnglish
Title of host publicationProceedings of CHT-17 ICHMT International Symposium on Advances in Computational Heat Transfer, 2017
PublisherBegell House
Pages1403-1418
Number of pages16
ISBN (Print)9781567004618
Publication statusPublished - 2017
EventInternational Symposium on Advances in Computational Heat Transfer, CHT 2017 - Napoli, Italy
Duration: 2017 May 282017 Jun 1

Conference

ConferenceInternational Symposium on Advances in Computational Heat Transfer, CHT 2017
Country/TerritoryItaly
CityNapoli
Period2017/05/282017/06/01

Subject classification (UKÄ)

  • Energy Engineering

Keywords

  • Curved surface
  • Enclosures
  • Heat transfer
  • Nanoparticles
  • Natural Convection
  • Numerical

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