Numerical and experimental modeling of VGF-type buoyant flow under traveling magnetic field


Numerical and experimental modeling of VGF-type buoyant flow under traveling magnetic field

Galindo, V.; Niemietz, K.; Pätzold, O.; Gerbeth, G.; Stelter, M.

Experimental and numerical modeling of a Vertical Gradient Freeze-type buoyant flow under a traveling magnetic field is presented. Low-temperature flow experiments were carried out using a GaInSn alloy. Radial heating and cooling of the melt leading to a double vortex buoyant flow like in typical VGF growth was introduced and systematically varied by means of a model furnace. The combined VGF-TMF flow was investigated with focus on the transition from a stationary to a time-dependent flow regime. The stability threshold was found to be significantly influenced by the mutual interaction of electromagnetically driven and buoyant flows.

Keywords: crystal growth; traveling magnetic field; vertical gradient freeze

  • Contribution to proceedings
    8th International pamir Conference on Fundamental and Applied MHD, 05.-09.09.2011, Borgo, Corsica, France
    Proceedings of the 8th International pamir Conference on Fundamental and Applied MHD, 193-197
  • Lecture (Conference)
    8th International pamir Conference on Fundamental and Applied MHD, 05.-09.09.2011, Borgo, Corsica, France

Permalink: https://www.hzdr.de/publications/Publ-16022
Publ.-Id: 16022