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TECHNICAL PAPERS: Heat Transfer in Manufacturing

Free Surface Flow in High Speed Fiber Drawing With Large-Diameter Glass Preforms

[+] 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

Serge W. Tchikanda

Sandia National Laboratories, MS 9161, 7011 East Ave, Livermore, CA 94550

Zhi Zhou, Siu-Ping Hong

OFS, Norcross, GA 30071

J. Heat Transfer 126(5), 713-722 (Nov 16, 2004) (10 pages) doi:10.1115/1.1795237 History: Received September 23, 2003; Revised May 24, 2004; Online November 16, 2004
Copyright © 2004 by ASME
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References

Paek,  U. C., and Runk,  R. B., 1978, “Physical Behavior of the Neck-Down Region During Furnace Drawing of Silica Fibers,” J. Appl. Phys., 49, pp. 4417–4422.
Homsy,  G. M., and Walker,  K., 1979, “Heat Transfer in Laser Drawing of Optical Fibers,” Glass Technol., 20(1), pp. 20–26.
Myers,  M. R., 1989, “A Model for Unsteady Analysis of Preform Drawing,” AIChE J., 35(4), pp. 592–602.
Vasiljev,  V. N., Dulnev,  G. N., and Naumchic,  V. D., 1989, “The Flow of a Highly Viscous Liquid With a Free Surface,” Glass Technol., 30(2), pp. 83–90.
Wei,  Z., and Lee,  K. M., 2003, “Effects of Radiative Transfer Modeling on Transient Temperature Distribution in Semitransparent Glass Rod,” ASME J. Heat Transfer, 125, pp. 1–7.
Lee,  S. H.-K., and Jaluria,  Y., 1997, “Simulation of the Transport Processes in the Neck-Down Region of a Furnace Drawn Optical Fiber,” Int. J. Heat Mass Transfer, 40, pp. 843–856.
Choudhury,  S. R., and Jaluria,  Y., 1998, “Thermal Transport Due to Material and Gas Flow in a Furnace for Drawing an Optical Fiber,” J. Mater. Res., 13(2), pp. 494–503.
Choudhury,  S. R., Jaluria,  Y., and Lee,  S. H.-K., 1999, “A Computational Method for Generating the Free-Surface Neck-Down Profile for Glass Flow in Optical Fiber Drawing,” Numer. Heat Transfer, Part A, 35, pp. 1–24.
Xiao, Z., and Kaminski, D. A., 1997, “Flow, Heat Transfer, and Free Surface Shape During the Optical Fiber Drawing Process,” HTD Vol. 347, National Heat Transfer Conference, ASME, New York, Vol. 9, pp. 219–229.
Yin,  Z., and Jaluria,  Y., 2000, “Neck Down and Thermally Induced Defects in High-Speed Optical Fiber Drawing,” ASME J. Heat Transfer, 122, pp. 351–362.
Cheng,  X., and Jaluria,  Y., 2002, “Effect of Draw Furnace Geometry on High-Speed Optical Fiber Manufacturing,” Numer. Heat Transfer, Part A, 41, pp. 757–781.
Viskanta,  R., and Anderson,  E. E., 1975, “Heat Transfer in Semitransparent Solids,” Adv. Heat Transfer, 11, pp. 317–441.
Schlichting, H., and Gersten, K., 1999, Boundary Layer Theory, Springer, Berlin.
Chorin, A. J., 1967, “A Numerical Method for Solving Incompressible Viscous Flow Problems,” J. Comput. Phys. 2 , pp. 12–26.
Patankar, S. V., 1980, Numerical Heat Transfer and Fluid Flow, Hemisphere Publishing, Washington, DC.
Fleming, J. D., 1964, “Fused Silica Manual,” Final Report for the U.S. Atomic Energy Commission, Oak Ridge, Tennessee, Project No. B-153.
Garner, H., 2000, “An Experimental Procedure for Measuring Furnace Temperature Profiles in Optical Fiber Drawing,” Lucent Technologies internal report.

Figures

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Schematic of free-surface flow in the furnace and postchamber
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Intensity orientation vector in the 2D axisymmetric cylindrical coordinates system
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Grid molecules for the staggered grid at the free surface a) control volume for u at the free surface b) control volume for v at the free surface
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Intermediate free-surface profiles during the outer iteration
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Comparison of results (Case 1) (a) Neck-down profiles (b) Centerline temperatures
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Effects of heat transfer coefficient h (a) Effect of h on neck-down profiles (b) Effect of h on centerline temperatures
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Radial temperature distributions
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Velocity distributions of the preform (a) Radial distribution of normalized v (b) Axial distribution of normalized v (c) Radial distribution of normalized u
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Particle flow tracking a) complete snapshots at different instants of time b) zoom in the rectangular region in a)
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Comparisons between semi-2D and full 2D models (a) Free surface profiles (b) Axial velocity distribution (c) Centerline temperature

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