The purpose of this paper is to present the solution of a highly nonlinear fluid dynamics in a low Prandtl number regime, typical for metal-like materials, as defined in the call for contributions to a numerical benchmark problem for 2D columnar solidification of binary alloys. The solution of such a numerical situation represents the first step towards understanding the instabilities in a more complex case of macrosegregation. The involved temperature, velocity and pressure fields are represented through the local approximation functions which are used to evaluate the partial differential operators. The temporal discretization is performed through explicit time stepping. The performance of the method is assessed on the natural convection in a closed rectangular cavity filled with a low Prandtl fluid. Two cases are considered, one with steady state and another with oscillatory solution. It is shown that the proposed solution procedure, despite its simplicity, provides stable and convergent results with excellent computational performance. The results show good agreement with the results of the classical finite volume method and spectral finite element method. The solution procedure is formulated completely through local computational operations. Besides local numerical method, the pressure correction is performed locally also, retaining the correct temporal transient. Comment: published extended version of invited keynote lecture in form of journal paper. Paper received EMERALD publisher Best Paper Award.
E.02 International awards
COBISS.SI-ID: 2599419In the book, published in USA, recent advances in the field of meshless methods are presented by distinguished authors. Comment: The book demonstrates the integration of the project leader, which is co-editor of the book, and the project group in the global modern trends of computational mechanics.
C.01 Editorial board of a foreign/international collection of papers/book
COBISS.SI-ID: 1737723Elite international conference on numerical solution of thermofluid problems has been organized at Bled lake. The proceedings have been published by Italian publisher Gianni Editore. Two special numbers of International Journal of Numerical Methods in Heat & Fluid Flow with selected extended papers from the conference are underway.
C.01 Editorial board of a foreign/international collection of papers/book
COBISS.SI-ID: 13500443Prof. Šarler was because of resounding publications of project group in the field of industrial use of meshless methods invited to edit a special issue of international journal Engineering Analysis with Boundary Elements and Other Mesh Reduction Methods.
C.03 Guest-associated editor
COBISS.SI-ID: 3352315This paper represents the elements and the use of the upgraded simulation system, developed in the last half decade for Štore Steel billet continuous caster. The simulation system is used in the context of the state-of-the-art automation and information of the twenty five year old three strand Concast billet continuous caster for dimensions square 140 and 180 mm with the capacity of 160 000 tons/year. The simulation system is used in the off-line and on-line modes. The off-line mode is used in order to set the proper process parameters and to calculate the temperature field, macrosegregation, and grain structure of the billet. It is also used to calculate the changes in the caster design such as the secondary cooling and the position of the SEN. The on-line model is used in automatic casting control system. The paper represents an update of our BHM publication of 2005 (Application of Continuous Casting Simulation at Štore Steel, BHM, Vol. 150, No. 9, 300–306). Comment: Paper demonstrates leading results of the project group and their impact in industry regarding physical modelling of the metallurgical processes. The numerical methods and multiphysics and multiscale models of solidification have been developed in the framework of this project.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 2761467