First order phase transition in 3D printer – numerical experiments

  • 1 Institute of Mathematics and Informatics, Sofia, Bulgaria
  • 2 Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre „Acad. Angel Balevski“ Sofia, Bulgaria


A methodology for analyzing and evaluating macroscopic level of first-order phase transition in 3D printer technology is proposed. A classic Stefan-Schwarz task was used. A 3D mathematical model of the Stefan-Schwarz problem is made. The finite element method for numerical solution is applied.
A numerical experiment was evaluated. A geometric drop (flow) model in 3D printer technology is proposed. The idea of filling a “flow” drop by smaller droplets than a “flow” has been investigated numerically. The temperature field at filling in the flow as hereditary was investigated.



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