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Phase field modelling of dendritic solidification by using an adaptive meshless solution procedureDobravec, Tadej ; Mavrič, Boštjan, 1989- ; Šarler, BožidarA novel numerical procedure is developed for modelling two-dimensional dendritic solidification in dilute binary alloys. The evolution of the phases and the solute concentration is described by the ... partial differential equations, obtained from the phase field model. The meshless radial basis function-generated finite difference (RBF-FD) method is used for the spatial discretisation of the partial differential equations. The forward Euler scheme is used for the timestepping. In order to reduce the computational cost, an adaptive procedure is developed, based on the quad-tree strategy, ensuring the highest density of the computational nodes at the solidliquid interface. In the procedure, the computational domain is divided into overlapping subdomains which can be dynamically refined or coarsened. The regular or scattered node distribution with constant node density is used for discretisation of each sub-domain. The hadaptive procedure is ensured by the constant product between the area of a sub-domain and the computational node density. The accuracy and speedup in comparison to the solution on a uniform node distribution are assessed by solving the benchmark problem for dendritic solidification in dilute binary alloys. The main originality of the model represents the first use of RBF-FD method for the spatial discretisation of the PF equations in combination with adaptive solution procedure. The RBF-FD method can be used on unstructured node distributions, which is especially advantageous in the solution of PF model for dendritic growth, since the solution is very sensitive to the regularity of the node distribution. The developed spatial-temporal-adaptive numerical model represents an accurate and computationally efficient tool for the prediction of the dendrite morphology and micro-segregation during the solidification in binary alloys.Vir: MCWASP XV : International Conference on Modelling of Casting, Welding and Advanced Solidification Processes : 22-23 June 2020, Jönköping, Sweden (Vol. 861, 2020, Str. 1-7)Vrsta gradiva - prispevek na konferenciLeto - 2020Jezik - angleškiCOBISS.SI-ID - 20710147
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Dobravec, Tadej | 38848 |
Mavrič, Boštjan, 1989- | 36364 |
Šarler, Božidar | 04101 |
Vir: Osebne bibliografije
in: SICRIS
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