Boundary element method for thermal flows using k-[epsilon] turbulence models

Matjaž Ramšak (Avtor), Leopold Škerget (Avtor)

Povzetek

Purpose - This paper aims to develop a multidomain boundary element method (BEM) for modeling 2D complex turbulent thermal flow using low Reynolds two-equation turbulence models. Design/methodology/approach - The integral boundary domain equations are discretised using mixed boundary elements and a multidomain method also known as a subdomain technique. The resulting system matrix is an overdetermined, sparse block banded and solved using a fast iterative linear least squares solver. Findings - The simulation of a turbulent flow over a backward step is in excellent agreement with the finite volume method using the same turbulent model. A grid consisting of over 100,000 elements could be solved in the order of a few minutes using a 3.0 GhzP4 and 1 GB memory indicating good efficiency. Originality/value - The paper shows, for the first time, that the BEM is applicable to thermal flows using k-▫$\epsilon$▫.

Ključne besede

toplotni tok;prenos toplote;turbulence;metoda robnih elementov;simulacije;thermal flow;heat exchange;boundary element method;simulation;

Podatki

Jezik:	Angleški jezik
Leto izida:	2008
Tipologija:	1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija:	UM FS - Fakulteta za strojništvo
UDK:	536.5:519.61/64
COBISS:	12301846
ISSN:	0961-5539
Št. ogledov:	1259
Št. prenosov:	33
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Boundary element method for thermal flows using k-epsilon turbulence models
Sekundarne ključne besede:	toplotni tok;prenos toplote;turbulence;metoda robnih elementov;simulacije;
URN:	URN:SI:UM:
Strani:	str. 514-532
DOI:	10.1108/09615530810853709
ID:	8717789