DOI QR코드

DOI QR Code

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

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.

Keywords

References

  1. 1996, Murata, H., Handbook of Optical Fibers and Cables, Marcel Dekker, Inc., New York, USA.
  2. 1997, Makinen, M., "A Test Facility for Enhanced Fiber Drawing Process Development," in Harmer, A.L. (ed.), Communications Cabling, IOP Press, pp.65-71.
  3. 1989, Imoto, K., Sumi, M., Toda, G. and Suganuma, T., "Optical Fiber Drawing Method with Gas Flow Controlling System," Journal of Lightwave Technology, Vol.7, No.1, pp.115-121. https://doi.org/10.1109/50.17743
  4. 1999, Paek, U.C., "Free Drawing and Polymer Coating of Silica Glass Optical Fibers," Journal of Heat Transfer, Vol.121, No.4, pp.774-788. https://doi.org/10.1115/1.2826066
  5. 1978, Paek, U.C. and Runk, R.B. "Physical Behavior of the Neck Down Region during Furnace Drawing of Silica Fibers," Journal of Applied Physics, Vol.49, No.8, pp.4417-4422. https://doi.org/10.1063/1.325495
  6. 1997, Lee, S.H.-K. and Jaluria, Y., "Simulation of the Transport Processes in the Neck-Down Region of a Furnace Drawn Optical Fiber," International Journal of Heat and Mass Transfer, Vol.40, No.4, pp.843-856. https://doi.org/10.1016/0017-9310(96)00165-2
  7. 1998, Choudhury, S.R. and Jaluria, Y., "Practical Aspects in the Drawing of an Optical Fiber," Journal of Materials Research, Vol.13, No.2, pp.483-493. https://doi.org/10.1557/JMR.1998.0063
  8. 2000, Yin, Z. and Jaluria, Y., "Neck Down and Thermally Induced Defects in High-Speed Optical Fiber Drawing," Journal of Heat Transfer, Vol.122, No.2, pp.351-362. https://doi.org/10.1115/1.521488
  9. 2005, Cheng, X. and Jaluria, Y., "Optimization of a Thermal Manufacturing Process: Drawing of Optical Fibers," International Journal of Heat and Mass Transfer, Vol.48, No.17, pp.3560-3573. https://doi.org/10.1016/j.ijheatmasstransfer.2005.03.012
  10. 2006, Lee, K.-M., Wei, Z., Zhou, Z. and Hong, S.-P., "Computational Thermal Models for Design of a Modern Fiber Draw Process," IEEE Transactions on Automation Science and Engineering, Vol.3, No.1, pp.108-118. https://doi.org/10.1109/TASE.2005.859657
  11. 2012, Kim, K., Kwak, H.S. and Kim, D., "The Role of Helium/Argon Gas Flow in a Glass Fiber Drawing Furnace," Computational Thermal Sciences, Vol.4, No.2, pp.263-270. https://doi.org/10.1615/ComputThermalScien.2012004538
  12. 2012, Kim, K., "Heat Transfer Analysis of Silica Glass Fiber Drawing Process in a Draw Furnace of Optical Fiber Manufacturing System," Proceedings of the 8th International Symposium on Heat Transfer, Beijing, China.
  13. 2011, Kim, K., Kim, D. and Kwak, H.S., "Radiative Heat Transfer Analysis of Glass Fiber Drawing in Optical Fiber Manufacturing," Journal of Computational Fluids Engineering, Vol.16, No.1, pp.22-29. https://doi.org/10.6112/kscfe.2011.16.1.022