Large-eddy simulation of continuous casting process [Elektronski vir]
Mramor, Katarina, fizik ; Vertnik, Robert ; Šarler, Božidar
This contribution presents the large-eddy simulation applied to the 2D model of the continuous casting process. The flow of molten steel in the continuous casting process is approximated by an ...incompressible fluid flow, described with transport equations for mass, momentum, and energy.The fractional step method is used for pressure-velocity coupling, Boussinesq approximation for buoyancy, and Darcy approximation for the mushy zone. The turbulence is modelled by applying the Smagorinsky large-eddy simulation model and the Van Driest damping function. Large-eddy simulation model enables to model eddies at higher accuracy than with the RANS type of models and with a much lower computational cost than with the DNS model. The strong form meshless method, structured with multiquadric radial basis functions, is used locally on five-nodded subdomains to solve the governing equations. Explicit time-stepping is used. The time-averaged flow field of the large-eddy simulation solution is in good agreement with the steady-state solution obtained by the previously implemented and thoroughly tested RANS model.
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