Pulse volume discharge behind shock wave in channel flow with obstacleстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 20 апреля 2022 г.
Аннотация:Action of the localized pulse energy input on the supersonic channel flow around and downstream the obstacle was studied. The pulsed volume discharge with preionization via two plasma sheets was initiated in a non-stationary gasdynamic flow in the channel with an obstacle (ledge). The discharge was initiated in different moments of a plane shock wave (and gas flow behind it) movement in the channel. The discharge electric current duration was 200 − 500 ns. The pulse volume discharge energy was redistributed in the inhomogeneous flowfield (plasma self-localization effect). Influence of the localized pulse energy input on the channel supersonic flow was analyzed: dynamics of shock (blast) waves produced by self-localized plasma in separation areas near the ledge and also discontinuities produces as a result of discontinuities breakdown at oblique shock area ionization. Initial flow configuration disturbed by the pulse volume discharge was restored in time interval up to 120 μs.