Numerical Analysis and Experimental Verification of Optical Fiber Composite Overhead Ground Wire (OPGW) Direct Current (DC) Ice Melting Dynamic Process Considering Gap Convection Heat Transfer DOI Creative Commons
S Wang, Long Cheng, Bo Tang

и другие.

Energies, Год журнала: 2025, Номер 18(8), С. 2090 - 2090

Опубликована: Апрель 18, 2025

An accurate analysis of the dynamic process ice melting in an optical fiber composite overhead ground wire (OPGW) is great reference significance for selection current and formulation strategy. Existing analytical models DC OPGW ignore gap convective heat transfer after formation air between layer, lack study phase transition layer. To this end, a finite element model was established by introducing mushy zone constant to consider influence gap, at same time, apparent capacity method used simulate changes physical property parameters melted The layer temperature rise during are calculated, effects half-width interval dT Am on summarized analyzed. accuracy verified conducting experiments. results show that process, convection mainly affects distribution as well location interface, width height below increases about 3 mm considering convection; interval, dT, interface modeled source, OPGW, while constant, Am, zone, region. elliptical cross-section formed experiment consistent with shape simulation results, measured curves good agreement maximum difference 3.5 K 10 min but overall trend consistent, all showing increasing first then decreasing.

Язык: Английский

Numerical Analysis and Experimental Verification of Optical Fiber Composite Overhead Ground Wire (OPGW) Direct Current (DC) Ice Melting Dynamic Process Considering Gap Convection Heat Transfer DOI Creative Commons
S Wang, Long Cheng, Bo Tang

и другие.

Energies, Год журнала: 2025, Номер 18(8), С. 2090 - 2090

Опубликована: Апрель 18, 2025

An accurate analysis of the dynamic process ice melting in an optical fiber composite overhead ground wire (OPGW) is great reference significance for selection current and formulation strategy. Existing analytical models DC OPGW ignore gap convective heat transfer after formation air between layer, lack study phase transition layer. To this end, a finite element model was established by introducing mushy zone constant to consider influence gap, at same time, apparent capacity method used simulate changes physical property parameters melted The layer temperature rise during are calculated, effects half-width interval dT Am on summarized analyzed. accuracy verified conducting experiments. results show that process, convection mainly affects distribution as well location interface, width height below increases about 3 mm considering convection; interval, dT, interface modeled source, OPGW, while constant, Am, zone, region. elliptical cross-section formed experiment consistent with shape simulation results, measured curves good agreement maximum difference 3.5 K 10 min but overall trend consistent, all showing increasing first then decreasing.

Язык: Английский

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