Hydrodynamic Instabilities in Czochralski Process of Crystal Growth

This paper deals with axisymmmetry breaking instabilities in Czochralski process of crystal growth. Numerical linear stability analysis was carried out using the axisymmetric bulk flow model. Stability diagrams of critical Grashof numbers Grc and frequencies ?c dependent on aspect ratio alpha(=height/radius), 0.4 =< alpha =< 1.0 and Prandtl...

Direct Numerical Simulation and Large-Eddy Simulation of wake vortices: Going from laboratory conditions to flight conditions

This paper aims at presenting DNS and LES as applied to the simulation of vortex wakes: in laboratory conditions (moderate to medium Reynolds numbers) and up to real aircraft conditions (high to very high Reynolds numbers). Only incompressible flows are considered. DNS and LES are able to capture complex 3-D physics provided one uses high...

Large Eddy Simulation of Bifurcating and Transitional Suddenly Expanded Flows

Implicit Large Eddy Simulation (ILES) using high-resolution methods have been employed in the investigation of bifurcation and transition of flow through three dimensional suddenly-expanded channels. ILES refers to high-resolution methods employed in spatially under-resolved simulations of turbulent flows without the need to resort to turbulence...