Ignition of high pressure lean H2 : air mixtures along the multiply channels of nanosecond surface dischargeстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 февраля 2021 г.
Аннотация:The initiation of combustion of lean H2 : air mixtures, ER = 0.5 – 0.6, by nanosecond surface dielectric barrier discharge (nSDBD) was studied experimentally at high initial pressures, P = 3–6 bar. The discharge was studied in different gas mixtures for the pressure range 1–12 bar. The ignition was initiated by two different discharge modes: streamer or filamentary nSDBD. The influence of the discharge structure and energy deposition on the ignition was demonstrated. Three regimes of multi-point ignition were observed: ignition with a few kernels, quasi-uniform ignition along the edge of high voltage electrode and ignition along the plasma channels. The velocities of flame propagation were analyzed. The minimum ignition energy of the discharge and ignition delay time of combustion have been measured and analyzed with the help of kinetic numerical modeling.