Abstract
The high-speed glass fiber drawing in a silica-based optical fiber mass manufacturing system is numerically modeled and simulated on draw furnace model to systematically examine how the use of highly expensive helium in purge gas supply greatly improves the process stability and purging of contamination particles. The numerical results found the undesirable purge gas flow phenomena such as large buoyancy driven flow recirculations and periodic or quasi-chaotic flow patterns around the preform neck-down formation, when the purge gas is made of argon only. The effects of helium contents and flowrates in purge gas supply of argon/helium mixture are extensively investigated on neck-down formation and purge gas flow patterns. In contrast, it is shown that the helium usage effectively eliminates the flow recirculation and flow instability. The optimization of purge gas supply condition is also discussed in an effort to reduce helium consumption.
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This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) (NRF-2022R1F1A1064925).
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Euntaek Lee received the B.S. degree from Chung-Ang University in 2004, M.S. degree from Korea Advanced Institute of Science and Technology in 2007 and Ph.D. degree from University of California Los Angeles in 2013, all in the academic area of mechanical engineering. He is currently the Associate Professor of Department of Mechanical System Engineering at Kumoh National Institute of Technology in Gumi, Korea. His research interests include the heat transfer and fluid flow analysis.
Joonsu Kim is pursuing the B.S. degree in mechanical system engineering from Kumoh National Institute of Technology, Gumi, Korea. Currently, he is the Production and Logistics manager in Valeo Pyeong Hwa Automotive Components (VPHC) in Daegu, Korea. His research interests are computational fluid dynamics, fluids and heat transfer.
Gia Ginelle Carandang received a B.S. degree in mechatronics from the Technological University of the Philippines, Manila, in 2015, and a B.S. and M.S. degrees in mechanical system engineering from Kumoh National Institute of Technology, Gumi, Korea, in 2019. Currently, she is a Ph.D. degree student in mechanical systems engineering at Tokyo Metropolitan University, Japan. Her research interests are computational modeling, fluids, and thermal engineering for mechanical systems.
Kyoung** Kim received the B.S. and M.S. degrees from Seoul National University in 1988 and 1990, respectively, and the Ph.D. degree from The University of Texas at Austin in 1998, all in the academic area of mechanical engineering. He is currently the Professor of Department of Mechanical System Engineering at Kumoh National Institute of Technology in Gumi, Korea. His research interests include the numerical modeling of heat transfer phenomena in materials processing and thermal plasma applications such as pyrotechnic explosive initiators.
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Lee, E., Kim, J., Carandang, G.G. et al. Analysis of helium/argon purge gas flows in industrial scale glass fiber drawing system. J Mech Sci Technol (2024). https://doi.org/10.1007/s12206-024-2103-8
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DOI: https://doi.org/10.1007/s12206-024-2103-8