ǂA ǂmultidomain boundary element method for two equation turbulence models

Matjaž Ramšak (Author), Leopold Škerget (Author)

Abstract

The paper deals with the multidomain Boundary Element Method (BEM) for modelling 2D complex turbulent flow using low Reynolds two equation turbulence models. While the BEM is widely accepted for laminar flow this is the first case, where this method is applied for complex flow problems using ▫$k-\epsilon$▫ turbulence model. The integral boundary domain equations are discretised using mixed boundary elements and a multidomain method also known as subdomain technique. The resulting system matrix is overdetermined, sparse, block banded and solved using fast iterative linear least squares solver. The simulation of turbulent flow over a backward step is in excellent agreement with the finite volume method using the same turbulent model.

Keywords

mehanika fluidov;turbulentni tok;metoda robnih elementov;nestisljiv viskozni fluid;fluid mechanics;turbulent flow;boundary element method;incompressible viscous fluid;stream function-vorticity formulation;two equation turbulence model;backward facing step flow;

Data

Language:	English
Year of publishing:	2005
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
UDC:	532.517.4:519.61/.64
COBISS:	10107670
ISSN:	0955-7997
Views:	1553
Downloads:	82
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary keywords:	mehanika fluidov;turbulentni tok;metoda robnih elementov;nestisljiv viskozni fluid;
URN:	URN:SI:UM:
Pages:	str. 1086-1103
Volume:	ǂVol. ǂ29
Issue:	ǂiss. ǂ12
Chronology:	Dec. 2005
ID:	8718363