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Article citations


Crnogorac, N. and Wilke, H. (2009) Measurement of Physical Properties of DyScO3 Melt. Crystal Research and Tech- nology, 44, 581-589.

has been cited by the following article:

  • TITLE: Radiative Heat Transfer and Thermocapillary Effects on the Structure of the Flow during Czochralski Growth of Oxide Crystals

    AUTHORS: Reza Faiez, Yazdan Rezaei

    KEYWORDS: Numerical Simulation, Fluid Flow, Radiative Heat Transfer, Thermocapillary Forces, Czochralski Method, Oxides

    JOURNAL NAME: Advances in Chemical Engineering and Science, Vol.5 No.3, July 28, 2015

    ABSTRACT: A numerical study was carried out to describe the flow field structure of an oxide melt under 1) the effect of internal radiation through the melt (and the crystal), and 2) the impact of surface tension-driven forces during Czochralski growth process. Throughout the present Finite Volume Method calculations, the melt is a Boussinnesq fluid of Prandtl number 4.69 and the flow is assumed to be in a steady, axisymmetric state. Particular attention is paid to an undulating structure of buoyancy-driven flow that appears in optically thick oxide melts and persists over against forced convection flow caused by the externally imposed rotation of the crystal. In a such wavy pattern of the flow, particularly for a relatively higher Rayleigh number , a small secondary vortex appears nearby the crucible bottom. The structure of the vortex which has been observed experimentally is studied in some details. The present model analysis discloses that, though both of the mechanisms 1) and 2) end up in smearing out the undulating structure of the flow, the effect of thermocapillary forces on the flow pattern is distinguishably different. It is shown that for a given dynamic Bond number, the behavior of the melt is largely modified. The transition corresponds to a jump discontinuity in the magnitude of the flow stream function.