THERMAL RADIATION HEAT TRANSFER EFFECTS ON SOLIDIFICATION OF FINITE CONCENTRIC CYLINDRICAL MEDIUM-ENTHALPY MODEL AND P-1 APPROXIMATION

1988 ◽  
Vol 14 (4) ◽  
pp. 483-498 ◽  
Author(s):  
Kwang S. Kim ◽  
Bedru Yimer
Keyword(s):  
Heat Transfer ◽  
Thermal Radiation ◽  
Radiation Heat Transfer ◽  
Radiation Heat ◽  
Transfer Effects ◽  
Heat Transfer Effects

Numerical analysis of radiation heat transfer effects on cryogenic target temperature

2015 ◽  
Vol 27 (6) ◽  
pp. 62007
Author(s):  
殷阁媛 Yin Geyuan ◽  
厉彦忠 Li Yanzhong ◽  
郑江 Zheng Jiang ◽  
陈鹏玮 Chen Pengwei ◽  
罗怀桦 Luo Huaihua
Keyword(s):  
Heat Transfer ◽  
Numerical Analysis ◽  
Radiation Heat Transfer ◽  
Target Temperature ◽  
Radiation Heat ◽  
Transfer Effects ◽  
Cryogenic Target ◽  
Heat Transfer Effects

Analysis to Reduce Thermal Stress in Oxide Single Crystal During Czochralski Growth

2004 ◽  
Author(s):  
Shigeki Hirasawa ◽  
Hiroyuki Ishibashi ◽  
Kazuhisa Kurashige ◽  
Akihiro Gunji
Keyword(s):  
Heat Transfer ◽  
Thermal Stress ◽  
Temperature Distribution ◽  
Thermal Radiation ◽  
Single Crystal ◽  
Radiation Heat Transfer ◽  
Heat Transfer Analysis ◽  
Czochralski Growth ◽  
Radiation Heat ◽  
Radial Temperature

Temperature distributions and thermal stress distributions in a semi-transparent GSO crystal during Czochralski (CZ) single crystal growth were numerically investigated by thermal radiation heat transfer analysis and anisotropy stress analysis. As GSO has special optical properties, such as semi-transparency at a wavelength shorter than 4.5 μm, thermal radiation heat transfer was calculated by the Monte Carlo method. These calculations showed that thermal stress is caused by the radial temperature distribution on the outside of the upper part of the crystal. To reduce this temperature distribution, the following three manufacturing conditions were found to be effective: use a sharp taper angle of the crystal, install a lid to the top of the insulator, and install a ring around the tapered part of the crystal.

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