TY - JOUR
T1 - Effect of draw furnace geometry on high-speed optical fiber manufacturing
AU - Cheng, Xu
AU - Jaluria, Yogesh
N1 - Funding Information:
Receievd 6 June 20;0a1ccepted 18 October 20. 01 Theauthorsacknowledgethe ®nancilasupportprovieddbytheNationalScieneFoucnd,una-tion der Grant No. DDM-9328,4an-d5th1e computing resources provided by the NatnailoComputtiaoal n Science Alliance (NCSA) and the National PratrhnpsfieroAdvd ComaputationancleIntcturrfrue as (NPACI). The parltsuppiaort by the Centr efor ComputlaDestnii(CCDgo)nat Rutagers University is alsoacknowedl.gTheedicdussions swithProfessorC.E.Polmyeropoulsoaregrallytackneowledfuge.d Adds rcoeesponrsdenrce to Yogesh Jaluria, Deptmat ofreMecnhanical and Aerospace Engieenr-ing, Rutergs University, New Brunswick, NJ 098, 0USA3.
PY - 2002/6
Y1 - 2002/6
N2 - Optimal design of the draw furnace is particularly desirable to meet the need of high-volume production in the optical fiber industry. This article investigates the thermal transport and flow in optical fiber drawing at high draw speeds in a cylindrical graphite furnace. A conjugate problem involving the glass and the purge gases is solved. The transport in the two regions is coupled through the boundary conditions at the free glass surface. The neck-down profile of the preform at steady state is determined by a force balance, using an iterative numerical scheme. To emphasize the effects of draw furnace geometry, the diameters of the preform and the fiber are kept fixed. Only the length and the diameter of the furnace are changed. For the purposes of comparison, a wide domain of draw speeds, ranging from 5 m/s to 20 m/s, is considered, and the form of the temperature distribution at the furnace surface remains unchanged. The dependence of the preform/fiber characteristics on the furnace geometry are demonstrated quantitively. Based on these numerical results, an optimal design of the draw furnace can be developed.
AB - Optimal design of the draw furnace is particularly desirable to meet the need of high-volume production in the optical fiber industry. This article investigates the thermal transport and flow in optical fiber drawing at high draw speeds in a cylindrical graphite furnace. A conjugate problem involving the glass and the purge gases is solved. The transport in the two regions is coupled through the boundary conditions at the free glass surface. The neck-down profile of the preform at steady state is determined by a force balance, using an iterative numerical scheme. To emphasize the effects of draw furnace geometry, the diameters of the preform and the fiber are kept fixed. Only the length and the diameter of the furnace are changed. For the purposes of comparison, a wide domain of draw speeds, ranging from 5 m/s to 20 m/s, is considered, and the form of the temperature distribution at the furnace surface remains unchanged. The dependence of the preform/fiber characteristics on the furnace geometry are demonstrated quantitively. Based on these numerical results, an optimal design of the draw furnace can be developed.
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U2 - 10.1080/10407780290059332
DO - 10.1080/10407780290059332
M3 - Article
AN - SCOPUS:0036603002
VL - 41
SP - 757
EP - 781
JO - Numerical Heat Transfer; Part A: Applications
JF - Numerical Heat Transfer; Part A: Applications
SN - 1040-7782
IS - 8
ER -