Title: Semi–Direct Numerical Simulation of a Czochralski Melt Flow on High–Performance Computers
Authors: Enger, Sven
Schäfer, Frank
Breuer, Michael 
Durst, Franz
Language: eng
Subject (DDC): 000 Informatik, Information & Wissen, allgemeine Werke
500 Naturwissenschaften
600 Technik
Issue Date: 2002
Publisher: Springer
Document Type: Book Part
Source: Enger, S., Schäfer, F., Breuer, M., Durst, F. (2002). Semi-Direct Numerical Simulation of a Czochralski Melt Flow on High-Performance Computers. In: Breuer, M., Durst, F., Zenger, C. (eds) High Performance Scientific And Engineering Computing. Lecture Notes in Computational Science and Engineering, vol 21. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55919-8_22
Journal / Series / Working Paper (HSU): Lecture Notes in Computational Science and Engineering
Volume: 21
Page Start: 201
Page End: 212
Published in (Book): High Performance Scientific And Engineering Computing
Publisher Place: Berlin
Conference: 3rd Int. FORTWIHR Conf. 2001, High–Performance Scientific and Engineering Computing; Methods, Developmemts, and Applications, Erlangen, Germany, March 12–14, 2001
The three-dimensional and time-dependent turbulent flow field and heat transfer of the melt in a Czochralski crystal growth process were predicted using an efficient block-structured finite-volume Navier-Stokes solver. From semi-direct numerical simulations, detailed information of instantaneous and time-averaged quantities were obtained. Two different crucible rotation rates were considered,,f2c = ---2 rpm and ---5 rpm, whereas the crystal rotation was kept constant at,f29 = 20 rpm. Exact boundary conditions for the temperature were obtained from experiments. The time-averaged results are discussed and it is shown that, due to velocity and temperature fluctuations underneath the crystal, the growth conditions are superior at higher crucible rotation rates. The main reason for this is the stabilizing effect of the centrifugal forces. Furthermore, it is shown that the boundary layer below the crystal is very thin, so that the influence on the bulk flow is negligible. Rotation will mainly maintain the circular shape of the crystal and ensure the homogeneous distribution of dopants.
Organization Units (connected with the publication): Strömungsmechanik 
ISBN: 978-3-540-42946-3
Publisher DOI: 10.1007/978-3-642-55919-8_22
Appears in Collections:6 - Bibliographic Data - Publications of the HSU Researchers (before HSU)

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