Title: |
Streamer discharges caused by highfrequency voltage leading to ignition of hydrogen/air mixtures |
| Author(s): |
Tim Langer, Detlev Markus, Frank Lienesch and Ulrich Maas |
| Journal: |
Combust. Sci. and Tech. |
| Year: |
2010 |
| Volume: |
182 |
| Pages: |
1718-1745 |
| DOI: |
10.1080/00102202.2010.497374 |
| Abstract: |
The authors investigated the ignition process of hydrogen/air mixtures by repetitive streamer
discharges due to high-frequency AC voltage in order to achieve a better comprehension
in matters of safety engineering. Therefore, the dependence of ignition on the number of
voltage cycles is examined. The location of the highest ignition probability is analysed.
The electric field strength in the test setup is calculated to explain the obtained effect of
different streamer elongation for different polarities. The streamer current is investigated.
The streamer radius and length in air are determined. Considering the impact of the
discharge as gas heating the minimum ignition energy density of different hydrogen/air
mixtures is calculated using detailed chemical kinetics. Based on this approach, the energy
deposition resulting from streamer discharges in the gas mixture is estimated. |