Unsteady nonaxisymmetric flows in the hydrodynamic Czochralski model at high Prandtl numbers

Thermal-gravitational and thermocapillary convection is numerically modeled in the axisymmetric and three-dimensional approximations for the hydrodynamic model configuration corresponding to technological regimes of oxide crystal growth and taken as the basis in an international test. The salient features of the interaction between the convection and the flow driven by crystal rotation are studied at high Prandtl numbers. The flow and temperature fields occurring upon the generation of axisymmetric oscillations and the loss of axial symmetry are studied, analyzed, and compared with the results of other authors.