Seminár z kvalitatívnej teórie diferenciálnych rovníc - Peter Guba (10.12.2015)

vo štvrtok 10.12.2015 o 14:00 v miestnosti M/223


19. 11. 2015 09.27 hod.
Od: Pavol Quittner

Prednášajúci: doc. RNDr. Peter Guba, PhD.

Názov prednášky: Nonlinear convection in ternary mushy layers

Termín: 10.12.2015, 14:00 hod., M/223


Abstrakt:
We consider a model for convection and primary solidification of a ternary alloy.
A previous linear theory identified, for the case of vanishing latent heat,
solute rejection and background solidification, a direct mode of convective instability
when all the fields (thermal and two solutal) were individually statically stable.
A weakly nonlinear development of this instability is examined in detail.
A phase-change-induced double-diffusive mechanism of pattern selection is identified.

Stránka seminára