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1、 Outline of the Presentation 1. Introduction 2. Global simulation tool 3. Simulation examples 4. Discussion FEMAGSoft © 2011 4. Discussion Main issue: modeling of the Open Melting Front (OMF Physical problem: the flow of the molten silicon along the OMF and the angle at which the melt-gas inter
2、face detaches from the OMF require accurate modeling in view of their direct impact on the radiation transfer to the OMF and on the melt-gas interface shape Numerical problem: the coupled solution of a problem with 4 interfaces (solidification front, melting front, melt-gas interface, and OMF and 3
3、tri-junctions represents a difficult problem of computational geometry. FEMAGSoft © 2011 4. Discussion (contd Other key issues: Species transport (dopant and impurities: the problem is similar to species transport in Cz growth, but much more difficult since almost no turbulent mixing is present in FZ growth Oscillations of the crystal rotation rate: this technique is often used to better mix the melt and can be simulated by use of a quasidynamic model 3D effects: non-axisymmetric effects are generated by the inductor shape and possibly by the use of non-ali
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