Primož Ternik (Avtor), Rebeka Rudolf (Avtor)

Povzetek

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.

Ključne besede

natural convection;heat transfer;nanofluid;Nusselt number;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FS - Fakulteta za strojništvo
UDK: 536
COBISS: 16968470 Povezava se bo odprla v novem oknu
ISSN: 0354-9836
Št. ogledov: 805
Št. prenosov: 325
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: naravna konvekcija;prenos toplote;nanotekočine;Nusseltovo število;
URN: URN:SI:UM:
Vrsta dela (COBISS): Znanstveno delo
Strani: S189-S200
Letnik: ǂVol. ǂ18
Zvezek: ǂsuppl. ǂ1
Čas izdaje: 2014
DOI: 10.2298/TSCI130604082T
ID: 10847225