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자료유형
학술대회자료
저자정보
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2002년 춘계학술대회논문집
발행연도
2002.5
수록면
1,913 - 1,918 (6page)

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이 논문의 연구 히스토리 (5)

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Arcs have long been used as a light and a heat source. Modern industrial applications demand the arc
discharge to be run at a power level which has not been encountered hitherto. Because of the high power level
encountered, there is a strong interaction between the arc discharges and their surroundings. This interaction
makes quantitative prediction of industrial arc plasma systems extremely difficult. The design of such systems
is still largely based on trial and error although the situation is rapidly improving because of the available
computational power at a cost which is still rapidly coming down. The desire to predict the behavior of arc
plasma system, thus reducing the development cost, has been the motivation of arc research. The most
enormous duty of a circuit breaker is to interrupt fault current in a circuit, thereby protecting other
components from damage. This is achieved by separating the two contacts in a gas or a liquid, and an arc is
inevitably established between the contacts. The arc must be controlled during the high current phase of the
AC cycle and interrupted at an appropriate current zero. In this paper, we have simulated the flow
characteristics of high current arc and surrounding gas in a SF6 gas circuit breaker. This is based on an arc
model which takes account of the turbulence enhanced momentum and heat transfer and the radial radiation
transfer (including re-absorption at the edge of the arc). The radiation transfer in a circuit breaker is calculated
based on a monotonic radial temperature profile from the axis. The temperature, velocity, electric field as well
as the pressure can easily be visualized under arcing conditions.

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Abstract

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2. 수치해석

3. 결과 및 고찰

4. 결론

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UCI(KEPA) : I410-ECN-0101-2009-550-014201692