Velocity-vorticity formulation for 3D natural convection in an inclined enclosure by BEM

Jure Ravnik (Avtor), Leopold Škerget (Avtor), Zoran Žunič (Avtor)

Povzetek

A natural convection phenomenon is studied in cubic and parallelepipedal inclined enclosures. The simulation of coupled laminar viscous flow and heat transfer is performed using a novel algorithm based on a combination of singledomain Boundary element method (BEM) and subdomain BEM. The algorithm solves the velocity-vorticity formulation of the incompressible Navier-Stokes equations coupled with the energy equation using the Boussinesq approximation.The subdomain BEM is used to solve the kinematics equation, the vorticity transport equation and the energy equation. The boundary vorticity values, which are needed as boundary conditions for the vorticity transport equation, are calculated by singe domain BEM solution of the kinematics equation. Simulation results are compared with benchmark results for a cubic inclined enclosure for Rayleigh number values ▫$10^3

Ključne besede

podobmočna metoda robnih elementov;hitrostno-vrtinčna formulacija;laminarni tok viskozne tekočine;naravna konvekcija;nagnjena kotanja;fluid mechanics;subdomain boundary element method;velocity-vorticity formulation;laminar viscous fluid flow;natural convection;inclined enclosure;

Podatki

Jezik:	Angleški jezik
Leto izida:	2008
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FS - Fakulteta za strojništvo
UDK:	532.5:519.61/.64
COBISS:	12278550
ISSN:	0017-9310
Št. ogledov:	2328
Št. prenosov:	95
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
URN:	URN:SI:UM:
Strani:	str. 4517-4527
Letnik:	ǂVol. ǂ51
Zvezek:	ǂiss. ǂ17/18
Čas izdaje:	Aug. 2008
DOI:	10.1016/j.ijheatmasstransfer.2008.01.018
ID:	8717786