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Second Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2001, KTH, Stockholm, Sweden

DOI: 10.1615/TSFP2

MODELING OF TURBULENT MELT CONVECTION DURING CZOCHRALSKI BULK CRYSTAL GROWTH

pages 381-386
DOI: 10.1615/TSFP2.2270
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ABSTRACT

We present the results of numerical simulation of 3D unsteady turbulent melt convection during Czochralski (CZ) silicon crystal growth. A model combining the Large Eddy Simulation (LES) and Reynolds-averaged approaches has been developed to predict the contribution of unresolved turbulent motion. The model is examined for different growth conditions in an industrial CZ configuration. Data illustrating instantaneous and time-averaged behavior of the melt are presented and compared to experimental observations. Thermal fluctuations in the melt are analyzed with respect to spectral characteristics and compared to the temperature measurements performed by thermocouples and an optical sensor.

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