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Meshless approach to the large-eddy simulation of the continuous casting process
ID Mramor, Katarina (Author), ID Vertnik, Robert (Author), ID Šarler, Božidar (Author)

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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.

Language:English
Keywords:large-eddy simulation, synthetic isotropic turbulence, meshless method, local radial basis function collocation, continuous casting of steel
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Year:2022
Number of pages:Str. 319-338
Numbering:Vol. 138
PID:20.500.12556/RUL-135409 This link opens in a new window
UDC:532:531.352:004.94
ISSN on article:0955-7997
DOI:10.1016/j.enganabound.2022.03.001 This link opens in a new window
COBISS.SI-ID:100532739 This link opens in a new window
Publication date in RUL:11.03.2022
Views:1503
Downloads:145
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Record is a part of a journal

Title:Engineering analysis with boundary elements
Shortened title:Eng. anal. bound. elem.
Publisher:Elsevier
ISSN:0955-7997
COBISS.SI-ID:5605380 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Language:Slovenian
Keywords:simulacija velikih vrtincev, sintetična izotropna turbulenca, brezmrežna metoda, lokalne radialne bazne funkcije, kolokacija, kontinuirano vlivanje jekla

Projects

Funder:ARRS - Slovenian Research Agency
Project number:L2-9246
Name:Večfizikalno in večnivojsko numerično modeliranje za konkurenčno kontinuirno ulivanje

Funder:Other - Other funder or multiple funders
Funding programme:Štore-Steel

Funder:ARRS - Slovenian Research Agency
Project number:P2-0162
Name:Večfazni sistemi

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