Meshless approach to the large-eddy simulation of the continuous casting process

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

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.

• Jezik: Angleški jezik
• Ključne besede: large-eddy simulation, synthetic isotropic turbulence, meshless method, local radial basis function collocation, continuous casting of steel
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: Str. 319-338
• Številčenje: Vol. 138
• PID: 20.500.12556/RUL-135409
• UDK: 532:531.352:004.94
• ISSN pri članku: 0955-7997
• DOI: 10.1016/j.enganabound.2022.03.001
• COBISS.SI-ID: 100532739
• Datum objave v RUL: 11.03.2022

Gradivo je del revije

• Naslov: Engineering analysis with boundary elements
• Skrajšan naslov: Eng. anal. bound. elem.
• Založnik: Elsevier
• ISSN: 0955-7997
• COBISS.SI-ID: 5605380

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: simulacija velikih vrtincev, sintetična izotropna turbulenca, brezmrežna metoda, lokalne radialne bazne funkcije, kolokacija, kontinuirano vlivanje jekla