Experimental analysis of velocity and temperature fields in a system similar to the Czochralski method of single crystal growth

• Autorzy: Nowak R. , Fornalik E. , Groniak J. , Szmyd J.
• Języki publikacji: EN

Abstrakty

EN

The mixed convection phenomenon plays a very important role in the Czochralski crystal growth due to its essential influence on the heat and mass transport processes. This paper presents the experimental analysis of the natural and mixed convection in the case of a single crystal growth system by the Czochralski method. The influence of such parameters like: temperature difference, rotation of speed of the crystal and the crucible and also aspect ratios were examined. To simulate a configuration of the Czochralski method a glass cylindrical crucible was immersed in a cubic aquarium filled with water. The copper cylinder simulating the crystal (crystal dummy) was attached to the surface of working fluid. Two constant temperature baths were used to control the level of temperature difference between the crucible walls and the crystal dummy. The crucible and the crystal were rotated by the system of engines. Their movement was continuously controlled. Two main methods were applied to investigate the temperature and velocity fields - DPIT and DPIV. The liquid crystal slurry was used as the tracers in both methods. The results are presented in the from of colour temperature maps and vector velocity fields.

Słowa kluczowe

EN

Czochralski method of crystal growth; Digital Particle Image Thermometry (DPIT); Digital Particle Image Velocimetry (DPIV)

PL

cyfrowa anemometria obrazowa; cyfrowa termometria obrazowa; metoda Czochralskiego; wzrost kryształu

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2008
• Tom: Vol. 29, no. 3
• Strony: 83--102
• Opis fizyczny: Bibliogr. 15 poz.,rys., tab., wz.,

Twórcy

autor

Nowak R.

autor

Fornalik E.

autor

Groniak J.

autor

Szmyd J.

• AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Kraków, Poland,

Bibliografia

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