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

Matjaž Ramšak (Author), Leopold Škerget (Author)

Abstract

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-▫$\epsilon$▫.

Keywords

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

Data

Language:	English
Year of publishing:	2008
Typology:	1.08 - Published Scientific Conference Contribution
Organization:	UM FS - Faculty of Mechanical Engineering
UDC:	536.5:519.61/64
COBISS:	12301846
ISSN:	0961-5539
Views:	1259
Downloads:	33
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Boundary element method for thermal flows using k-epsilon turbulence models
Secondary keywords:	toplotni tok;prenos toplote;turbulence;metoda robnih elementov;simulacije;
URN:	URN:SI:UM:
Pages:	str. 514-532
DOI:	10.1108/09615530810853709
ID:	8717789