TY - JOUR
T1 - Effect of AC electric fields on flame spread over electrical wire
AU - Kim, Minkuk
AU - Chung, Suk Ho
AU - Fujita, Osamu
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by AEA Project/KAUST and by "Ground-Based Research Program for Space Utilization" by Japan Space Forum (2006-09).
PY - 2011
Y1 - 2011
N2 - The effect of electric fields on the characteristics of flame spread over insulated electrical wire has been investigated experimentally by varying AC voltage and frequency applied to the wire in the normal gravity condition. The polyethylene (PE) insulated electrical wire was placed horizontally on electrically non-conducting posts and one end of the wire was connected to the high voltage terminal. Thus, the electrical system is the single electrode configuration. The wire was ignited at one end and the flame spread rate along the wire has been measured from the images using a video camera. Two distinct regimes existed depending on the applied AC frequency. In the low frequency regime, the flame spread rate decreased with the frequency and voltage. While in the high frequency regime, it decreased initially with voltage and then increased. At high frequency, the spread rate was even over that without applying electric fields. This result implies that fire safety codes developed without considering the effect of electric fields may require modifications. © 2010 Published by Elsevier Inc. on behalf of The Combustion Institute. All rights reserved.
AB - The effect of electric fields on the characteristics of flame spread over insulated electrical wire has been investigated experimentally by varying AC voltage and frequency applied to the wire in the normal gravity condition. The polyethylene (PE) insulated electrical wire was placed horizontally on electrically non-conducting posts and one end of the wire was connected to the high voltage terminal. Thus, the electrical system is the single electrode configuration. The wire was ignited at one end and the flame spread rate along the wire has been measured from the images using a video camera. Two distinct regimes existed depending on the applied AC frequency. In the low frequency regime, the flame spread rate decreased with the frequency and voltage. While in the high frequency regime, it decreased initially with voltage and then increased. At high frequency, the spread rate was even over that without applying electric fields. This result implies that fire safety codes developed without considering the effect of electric fields may require modifications. © 2010 Published by Elsevier Inc. on behalf of The Combustion Institute. All rights reserved.
UR - http://hdl.handle.net/10754/561596
UR - https://linkinghub.elsevier.com/retrieve/pii/S1540748910003366
UR - http://www.scopus.com/inward/record.url?scp=78650877853&partnerID=8YFLogxK
U2 - 10.1016/j.proci.2010.06.155
DO - 10.1016/j.proci.2010.06.155
M3 - Article
SN - 1540-7489
VL - 33
SP - 1145
EP - 1151
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
IS - 1
ER -