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Title:Conduction and convection heat transfer characteristics of water-based Au nanofluids in a square cavity with differentially heated side walls subjected to constant temperatures
Authors:ID Ternik, Primož (Author)
ID Rudolf, Rebeka (Author)
Files:.pdf Thermal_Science_2014_Ternik,_Rudolf_Conduction_and_convection_heat_transfer_characteristics_of_water-based_au_nanofluids_in_a_square_cav.pdf (834,69 KB)
MD5: 0DFB57F038620C53B2B8F42981F74726
PID: 20.500.12556/dkum/2a707c84-8996-4443-9deb-51974ae4f194
URL http://www.doiserbia.nb.rs/Article.aspx?ID=0354-98361300082T
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:The present work deals with the natural convection in a square cavity filled with the water-based Au nanofluid. The cavity is heated on the vertical and cooled from the adjacent wall, while the other two horizontal walls are adiabatic. The governing differential equations have been solved by the standard finite volume method and the hydrodynamic and thermal fields were coupled together using the Boussinesq approximation. The main objective of this study is to investigate the influence of the nanoparticles' volume fraction on the heat transfer characteristics of Au nanofluids at the given base fluid's (i.e. water) Rayleigh number. Accurate results are presented over a wide range of the base fluid Rayleigh number and the volume fraction of Au nanoparticles. It is shown that adding nanoparticles in a base fluid delays the onset of convection. Contrary to what is argued by many authors, we show by numerical simulations that the use of nanofluids can reduce the heat transfer rate instead of increasing it.
Keywords:natural convection, heat transfer, nanofluid, Nusselt number
Publication status:Published
Publication version:Version of Record
Year of publishing:2014
Number of pages:str. 189-200
Numbering:Letn. 18, suplement 1
PID:20.500.12556/DKUM-66733 New window
ISSN on article:0354-9836
COBISS.SI-ID:16968470 New window
DOI:10.2298/TSCI130604082T New window
Publication date in DKUM:07.07.2017
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Record is a part of a journal

Title:Thermal science
Shortened title:Therm. sci.
Publisher:Vinča Institute of Nuclear Sciences
COBISS.SI-ID:43417089 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:L2-4212
Name:Tehnologija izdelave Au nano-delcev


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:07.07.2017

Secondary language

Keywords:naravna konvekcija, prenos toplote, nanotekočine, Nusseltovo število


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