Modeling of Advanced Melting Zone for Manufacturing of Optical Fibers*

[+] Author and Article Information
Zhiyong Wei, Kok-Meng Lee

The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405

Zhi Zhou, Siu-Ping Hong

OFS Norcross, GA 30071

J. Manuf. Sci. Eng 126(4), 750-759 (Feb 04, 2005) (10 pages) doi:10.1115/1.1849032 History: Received November 01, 2002; Revised November 01, 2003; Online February 04, 2005
Copyright © 2004 by ASME
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Schematic illustrating the transient process
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Local orientation coordinate system in the 2D axi-symmetric cylindrical system
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Representative control solid angle in the local coordinate system
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Schematics illustrating the boundary conditions: (a) Gap between the two cylinders; (b) Interface of the glass rod
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Determination of the incident intensity unit vectors sf and sg
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Comparison of the FVM and the integral solutions: (a) Tg=500 K; (b) Tg=1500 K
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Effect of temperature gradient on thermal crack: (a) Radial temperature gradient at the tip of the gap; (b) Experimentally observed crack
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Comparison of radial temperature distributions: (a) Specular interface; (b) Diffuse interface
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Temperature contours in the baseline simulation (unit: K): (a) t=500 sec, Z/Lf=−0.03; (b) t=1170 sec, Z/Lf=0.16; (c) t=1700 sec, Z/Lf=0.3
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Contours of the divergence of the radiative flux ∇⋅q in the baseline simulation (unit: kw/m3 ): (a) t=500 sec, Z/Lf=−0.03; (b) t=1170 sec, Z/Lf=0.16; (c) t=1700 sec, Z/Lf=0.3
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Effect of initial joint length
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Different feeding profiles
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Comparison of radial temperature gradient at the tip of the gap



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