Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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COMPUTATIONAL STUDY OF GLASS FIBER DRAWING PROCESS IN A DRAW FURNACE OF OPTICAL FIBER MASS MANUFACTURING SYSTEM

광섬유 대량생산용 인출퍼니스 내 유리섬유 인출공정의 전산해석

  • Kim, K. (Dept. of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Kwak, H.S. (Dept. of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Kim, D. (Dept. of Mechanical Engineering, Kumoh National Institute of Technology)
  • 김경진 (금오공과대학교 기계시스템공학과) ;
  • 곽호상 (금오공과대학교 기계시스템공학과) ;
  • 김동주 (금오공과대학교 기계공학과)
  • Received : 2013.11.18
  • Accepted : 2013.12.09
  • Published : 2013.12.31
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Abstract

Mass manufacturing of optical fiber includes the process of very thin glass fiber drawing by heating and softening the high purity silica preform and applying the draw tension on the softened tip of preform neck-down profile in a draw furnace. In this computational study, this process is numerically modeled with simplified geometry of the draw furnace which is comprised of essential parts such as concentric graphite heater, muffle tube, and insulation surrounding the heater. The iterative computational scheme is employed between one-dimensional model of neck-down profile prediction and two-dimensional axisymmetric thermo-fluid CFD computation of radiative heating and working gas convection. The computational results show the experimentally observed neck-down profile in heated section of preform, while yielding the reasonable values of draw tension and heater wattage. Also, this study analyzes and discusses the effects of heating conditions such as heater length and temperature on several important aspects of glass fiber drawing process.

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References

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