Thermal mode of a resistance furnace for drawing optical fiber. I. Generalized mathematical model of the heating unit
Graphite resistance furnaces are used extensively for drawing high-quality quartz optical fibers. In this paper the thermal mode of a resistance furnace is investigated and methods to assure the most favorable temperature conditions for fiber formation as well as an increase in the service life of the graphite heating element are discussed. A foundation is given for a physical and mathematical model of the furnace and the algorithm for the numerical solution of the problem formulated is considered. The heat balance equation is derived and the external heat elimination coefficient is computed. Temperature distribution throughout the furnace is modeled. The iterative algorithm, written in FORTRAN-4, converges well and permits computation of the thermal mode of heating element operation for practically any resistance furnace construction.
- Research Organization:
- Leningrad Institute of Precision Mechanics and Optics (USSR)
- OSTI ID:
- 5952081
- Journal Information:
- J. Eng. Phys. (Engl. Transl.); (United States), Vol. 54:2; Other Information: Translated from Inzh. Fiz. Zh.; 54: No. 2, 248-256 (Feb 1988)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ELECTRIC FURNACES
THERMAL EFFICIENCY
OPTICAL FIBERS
DRAWING
ALGORITHMS
COMPUTER-AIDED DESIGN
COMPUTERIZED SIMULATION
GRAPHITE
HEAT TRANSFER
ITERATIVE METHODS
MATHEMATICAL MODELS
NUMERICAL SOLUTION
OPTIMIZATION
QUARTZ
SERVICE LIFE
TEMPERATURE DISTRIBUTION
CARBON
CHALCOGENIDES
EFFICIENCY
ELEMENTAL MINERALS
ELEMENTS
ENERGY TRANSFER
FABRICATION
FIBERS
FURNACES
MATERIALS WORKING
MATHEMATICAL LOGIC
MINERALS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
SIMULATION
360601* - Other Materials- Preparation & Manufacture
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes