{"id":5054,"date":"2018-06-26T09:47:57","date_gmt":"2018-06-26T08:47:57","guid":{"rendered":"https:\/\/l2ep.univ-lille.fr\/?p=5054"},"modified":"2018-11-08T09:54:37","modified_gmt":"2018-11-08T08:54:37","slug":"seminaire-equipe-omn-31-aout-2018","status":"publish","type":"post","link":"https:\/\/l2ep.univ-lille.fr\/en\/seminaire-equipe-omn-31-aout-2018\/","title":{"rendered":"S\u00e9minaire Equipe OMN, Pr. Chijie ZHUANG (Tsinghua University), 31 aout 2018"},"content":{"rendered":"<h5>Le vendredi 31 aout 2018, Prof.  Chijie ZHUANG qui vient de l&rsquo;Universit\u00e9 de Tsinghua (Chine),\u00a0effectuera un s\u00e9minaire sur le th\u00e8me :<\/h5>\n<p><center><strong><span style=\"font-size: medium; color: #f07e1c;\">Shock Wave in Atmospheric Air Gap Leader Discharge: Observation and Simulation Results<\/span><\/strong><\/center><\/span><br \/>\nDate :\u00a0<strong>Lundi 2 juillet 2018 \u00e0 13h30<\/strong><br \/>\nLieu : <strong>Salle 2S53 \u00e0 Lilliad<\/strong><\/p>\n<p style=\"text-align: justify;\"><span>A leader is an electric discharge mechanism in long-air-gap discharges, which is generally described by a set of convection-diffusion equations, Poisson\u2019s equation and Navier-Stokes equations. We report the shockwave phenomenon in an air-gap leader discharge observed using a Mach-Zehnder interferometer with a time resolution of several microseconds. The continuous temporal evolution of the shock wave and the plasma channel was recorded and reproduced with a thermo-hydrodynamic model discretized by MUSCL and TVDRK schemes, with the measured current as the model input. The simulation results for the shock wave front positions and the plasma channel radius showed good consistency with the experimental measurements. Detailed thermal parameters obtained through the simulation showed that continuous energy injection by the current results in a temporary over-pressure process in the plasma channel and produces the shock wave.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le vendredi 31 aout 2018, Prof. Chijie ZHUANG qui vient de l&rsquo;Universit\u00e9 de Tsinghua (Chine),\u00a0effectuera un s\u00e9minaire sur le th\u00e8me : Shock Wave in Atmospheric Air Gap Leader Discharge: Observation and Simulation Results Date :\u00a0Lundi 2 juillet 2018 \u00e0 13h30 Lieu : Salle 2S53 \u00e0 Lilliad A leader is an electric discharge mechanism in long-air-gap [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[34,37],"tags":[],"_links":{"self":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/5054"}],"collection":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/comments?post=5054"}],"version-history":[{"count":3,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/5054\/revisions"}],"predecessor-version":[{"id":5302,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/posts\/5054\/revisions\/5302"}],"wp:attachment":[{"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/media?parent=5054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/categories?post=5054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/l2ep.univ-lille.fr\/en\/wp-json\/wp\/v2\/tags?post=5054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}