20.500.12556/DKUM-66733 Conduction and convection heat transfer characteristics of water-based Au nanofluids in a square cavity with differentially heated side walls subjected to constant temperatures 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. natural convection heat transfer nanofluid Nusselt number naravna konvekcija prenos toplote nanotekočine Nusseltovo število true false true Angleški jezik Slovenski jezik Znanstveno delo 2017-07-07 09:29:20 2017-07-07 09:30:48 2022-08-01 13:06:31 2019-07-11 15:57:09 2014 0 0 str. 189-200 suplement 1 Letn. 18 2014 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 0354-9836 536 43417089 16968470 10.2298/TSCI130604082T 0354-9836 URN:SI:UM:DK:M4REIVYD Thermal_Science_2014_Ternik,_Rudolf_Conduction_and_convection_heat_transfer_characteristics_of_water-based_au_nanofluids_in_a_square_cav.pdf Thermal_Science_2014_Ternik,_Rudolf_Conduction_and_convection_heat_transfer_characteristics_of_water-based_au_nanofluids_in_a_square_cav.pdf 1 0DFB57F038620C53B2B8F42981F74726 4504be212d8641cdc98b474c43b07572c8fb15b45dd8a95884215960cb092327 5fee498e-7c0e-11eb-bb7a-00155d0001ca 20.500.12556/dkum/2a707c84-8996-4443-9deb-51974ae4f194 https://dk.um.si/Dokument.php?lang=slv&id=113830 http://www.doiserbia.nb.rs/Article.aspx?ID=0354-98361300082T 1 https://dk.um.si/Dokument.php?lang=slv&id=113829 Fakulteta za strojništvo 0 0 0