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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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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