직류전기장이 인가된 상태에서 쌍둥이 전선을 통해 전파하는 화염들에 대한 상호작용

• Published in: 한국연소학회지 Vol. 23; no. 2; pp. 1 - 6
• Main Authors: 박순호(S. H. Park), 김희준(H. J. Kim), 권오붕(O. B. Kwon), 박정(J. Park), 정석호(S. H. Chung)
• Format: Journal Article
• Language: Korean
• Published: 한국연소학회 01.06.2018
• Subjects: 기계공학; DC electric field; Electrical wire; Flame spread rate
• ISSN: 1226-0959; 2466-2089
• DOI: 10.15231/jksc.2018.23.2.001

The effect of a direct current (DC) electric field on the characteristics of flame spread over polyethylene (PE) -insulated twin electrical wires was studied by varying wire gap (S) and voltage (VDC). The flame spread rate (FSR) for the wire with negative voltage (SF-) was larger than with positive voltage (SF+) initially and becomes the same in developed region. The FSR could be classified into two regimes; twin flame spread and single flame spread after the extinction of positive voltage (SF+). In each regime, three sub-regimes are identified depending on S and VDC. In each regime, FSR could be characterized by S and VDC The variation of FSR was explained by thermal balance mechanism with ionic wind effect. In high intensive of voltage, the flames were extinguished, at excessive voltages, an electrical short occurred. KCI Citation Count: 0