| 講演抄録/キーワード |
| 講演名 |
2007-11-15 13:40
Simulation and Experimental Study of Arc Motion in a Low-Voltage Circuit Breaker Considering Wall Ablation Qiang Ma・Mingzhe Rong(Xi'an Jiaotong Univ.)・Anthony B. Murphy(CSIRO Industrial Physics)・○Yi Wu・Tiejun Xu(Xi'an Jiaotong Univ.)・Fei Yang(CSIRO Industrial Physics) EMD2007-93 |
| 抄録 |
(和) |
This paper focuses on the numerical and experimental investigations of the influence of two polymers (PA6 and POM) on the arc behavior during arc motion process. The mathematical model of 3-dimentional air arc plasma considering the ablation of lateral walls is built based on magnetic hydro-dynamics (MHD). By adopting the commercial computational fluid dynamics (CFD) package based on control-volume method, the above MHD model is solved and the distribution of temperature field, concentration field, flow field and electrical potential field in the arc chamber are calculated. The simulation results indicate that the vapor concentration behind the arc column is higher than that in front of the arc column because of the existence of “vortex” in the arc chamber. The use of polymers causes the maximal arc voltage increase 16.2% with POM and 18.9% with PA6 in this case and causes the average arc velocity increase 52.1% with POM and 59.5% with PA6 in this case. The experiments are also carried out to study the influence of polymers on arc voltage and arc root position in the arc chamber during arc motion. The experimental results prove the validity of the numerical investigation. |
| (英) |
This paper focuses on the numerical and experimental investigations of the influence of two polymers (PA6 and POM) on the arc behavior during arc motion process. The mathematical model of 3-dimentional air arc plasma considering the ablation of lateral walls is built based on magnetic hydro-dynamics (MHD). By adopting the commercial computational fluid dynamics (CFD) package based on control-volume method, the above MHD model is solved and the distribution of temperature field, concentration field, flow field and electrical potential field in the arc chamber are calculated. The simulation results indicate that the vapor concentration behind the arc column is higher than that in front of the arc column because of the existence of “vortex” in the arc chamber. The use of polymers causes the maximal arc voltage increase 16.2% with POM and 18.9% with PA6 in this case and causes the average arc velocity increase 52.1% with POM and 59.5% with PA6 in this case. The experiments are also carried out to study the influence of polymers on arc voltage and arc root position in the arc chamber during arc motion. The experimental results prove the validity of the numerical investigation. |
| キーワード |
(和) |
air arc plasma / magnetic hydro-dynamics / MHD / wall ablation / polymer / / / |
| (英) |
air arc plasma / magnetic hydro-dynamics / MHD / wall ablation / polymer / / / |
| 文献情報 |
信学技報, vol. 107, no. 309, EMD2007-93, pp. 143-148, 2007年11月. |
| 資料番号 |
EMD2007-93 |
| 発行日 |
2007-11-07 (EMD) |
| ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
| PDFダウンロード |
EMD2007-93 |