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Multi-physics and multi-scale meshless simulation system for direct-chill casting of aluminium alloys
ID Šarler, Božidar (Author), ID Dobravec, Tadej (Author), ID Glavan, Gašper (Author), ID Hatić, Vanja (Author), ID Mavrič, Boštjan (Author), ID Vertnik, Robert (Author), ID Cvahte, Peter (Author), ID Gregor, Filip (Author), ID Jelen, Marina (Author), ID Petrovič, Marko (Author)

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Abstract
This paper represents an overview of the elements of the user-friendly simulation system, developed for computational analysis and optimization of the quality and productivity of the electromagnetically direct-chill cast semi-products from aluminium alloys. The system also allows the computational estimation of the design changes of the casting equipment. To achieve this goal, the electromagnetic and the thermofluid process parameters are coupled to the evolution of Lorentz force, temperature, velocity, concentration, strain and stress fields as well as microstructure evolution. This forms a multi-physics and multi-scale problem of great complexity, which has not been demonstrated before. The macroscopic fluid mechanics, solid mechanics, and electromagnetic solution framework is based on local strong-form meshless formulation, involving the radial basis functions and monomials as trial functions, and local collocation or weighted least squares approximation. It is coupled to the micro-scale by incorporating the point automata solution concept. The entire macro-micro solution concept does not require meshing and space integration. The solution procedure can be easily and efficiently automatically adapted in node redistribution and/or refinement sense, which is of utmost importance when coping with fields exhibiting sharp gradients, which occur in the phase-change problems. The simulation system is coded from scratch in modern Fortran. The elements of the experimental validation of the system and the demonstration of its use for round billet casting in IMPOL Aluminium Industry are shown.

Language:English
Keywords:aluminium alloys, direct-chill casting, computational mechanics, multi-scale modelling, multi-physics modelling, meshless methods
Work type:Article (dk_c)
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2019
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:Str. 658-670
Numbering:Vol. 65, no. 11/12
UDC:621.74
ISSN on article:0039-2480
DOI:10.5545/sv-jme.2019.6350 This link opens in a new window
COBISS.SI-ID:3385188 This link opens in a new window
Publication date in RUL:29.01.2020
Views:616
Downloads:380
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Language:Slovenian
Title:Večfizikalni in večnivojski brezmrežni simulacijski sistem za polkontinuirno ulivanje aluminijevih zlitin
Keywords:aluminijeve zlitine, polkontinuirno ulivanje, računalniška dinamika, večnivojsko modeliranje, večfizikalno modeliranje, brezmrežne metode

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project number:J2-7384
Name:NAPREDNO MODELIRANJE IN SIMULACIJA KAPLJEVITO-TRDNIH PROCESOV S PROSTIMI ROBOVI

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project number:L2-6775
Name:SIMULACIJA INDUSTRIJSKIH PROCESOV STRJEVANJA POD VPLIVOM ELEKROMAGNETNIH POLJ

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project number:P2-0162
Name:Tranzientni dvofazni tokovi

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