Katarina Mramor (Author), Robert Vertnik (Author), Božidar Šarler (Author)

Abstract

The paper discusses the numerical solution of the large-eddy formulation for modelling the turbulent fluid flow with solidification in the continuous casting of steel. This industrially relevant problem is solved by a meshless method for the first time. The solid-liquid system is formulated within the continuum mixture formulation of the governing, mass momentum and energy equations. The Darcy porous media model describes the mushy region. The large-eddy formulation is based on the Smagorinsky model for sub-grid scale viscosity and the van Driest damping function. The synthetic turbulence is prescribed at the molten steel inlet. The generated turbulent fluctuations are isotopic and correlated in time through an asymmetric time filter. Explicit time discretisation, combined with meshless local radial basis function collocation method, is employed. Five-noded subdomains, non-uniform node arrangement and multiquadrics shape functions are used for solving a two-dimensional model. The sensitivity to different node arrangements, time steps, inlet temperature, and velocity boundary conditions is elaborated and successfully verified by comparison with our previously published meshless k − ε turbulence model of the same process.

Keywords

large-eddy simulation;synthetic isotropic turbulence;meshless method;local radial basis function collocation;continuous casting of steel;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 532:531.352:004.94
COBISS: 100532739 Link will open in a new window
ISSN: 0955-7997
Views: 180
Downloads: 69
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: simulacija velik vrtincev;sintetična izotropna turbulenca,;brezmrežna metoda;lokalne radialne bazne funkcije;kolokacija;kontinuirano vlivanje jekla;
Type (COBISS): Article
Pages: str. 319-338
Issue: ǂVol. ǂ138
Chronology: May 2022
DOI: 10.1016/j.enganabound.2022.03.001
ID: 14728276