Summary
Turbulent convection of a Si-melt in an idealized Czochralski crystal growth configuration was simulated with a three-dimensional, time-dependent Navier-Stokes solver. The analysis of the flow data focuses on the influence that thermocapillar forces and rotation of crystal and crucible have on the flow structures, the heat transport and the development of velocity and temperature fluctuations. Thermocapillarity is found to be insignificant for the bulk flow structure and overall heat transfer. It is important though if intensities of the velocity field or the fluctuating flow field are of interest. Introducing rotation of the crystal and crucible creates a complex flow with three recirculation zones, the dynamics of which is controlled by centrifugal forces counteracting buoyancy and surface tension effects. Temperature and velocity fluctuations are enhanced by up to one order of magnitude due to rotation. The maximum values are located in a thin layer underneath the edge of the crystal within the cristalization zone.
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© 1997 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden
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Wagner, C., Friedrich, R. (1997). Turbulent flow in idealized Czochralski crystal growth configurations. In: Körner, H., Hilbig, R. (eds) New Results in Numerical and Experimental Fluid Mechanics. Notes on Numerical Fluid Mechanics (NNFM), vol 60. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-322-86573-1_47
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DOI: https://doi.org/10.1007/978-3-322-86573-1_47
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
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