{"634754":{"#nid":"634754","#data":{"type":"event","title":"PhD Proposal by Bin Wu","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EPh.D. Thesis Proposal\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EWednesday, April 29 at 9:00 a.m.\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EBlueJeans (\u003C\/strong\u003E\u003Ca href=\u0022https:\/\/bluejeans.com\/587024806\u0022\u003Ehttps:\/\/bluejeans.com\/587024806\u003C\/a\u003E)\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EBin Wu\u003C\/strong\u003E\u003Cbr \/\u003E\r\n\u003Cem\u003E(Advisor: Prof. Wenting Sun)\u003C\/em\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EInvestigation of Ozone Assisted Ethylene Combustion at Low-Temperature: Kinetics and Dynamics\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003Cbr \/\u003E\r\nWith increasing demands on high-efficiency fuel-energy conversion at harsh environments, great attentions have been drawn by novel combustion concepts. Among many, ozone (O\u003Csub\u003E3\u003C\/sub\u003E) assisted combustion has shown great potential in active combustion enhancement and control at extreme conditions. Unlike saturated hydrocarbon, whose reaction with O\u003Csub\u003E3\u003C\/sub\u003E is virtually negligible at low temperature conditions, the reaction between O\u003Csub\u003E3\u003C\/sub\u003E and unsaturated hydrocarbon has intrinsically very low activation energy barrier and high heat release. Using non-premixed C\u003Csub\u003E2\u003C\/sub\u003EH\u003Csub\u003E4\u003C\/sub\u003E jet and O\u003Csub\u003E2\u003C\/sub\u003E\/O\u003Csub\u003E3\u003C\/sub\u003E\/N\u003Csub\u003E2\u003C\/sub\u003E co-flow configuration, continuous formation of auto-ignition kernels was observed even at room temperature and pressure, and the equivalent flame front propagation speed could be hundred times faster than the regular laminar flame speed. However, the detailed kinetics behind such auto-ignitive phenomenon is unclear. Although the mechanism of C\u003Csub\u003E2\u003C\/sub\u003EH\u003Csub\u003E4\u003C\/sub\u003E ozonolysis reaction, i.e. C\u003Csub\u003E2\u003C\/sub\u003EH\u003Csub\u003E4\u003C\/sub\u003E+O\u003Csub\u003E3\u003C\/sub\u003E, has been extensively investigated for decades among atmospheric chemistry community, studies under conditions align with combustion applications are sparse, where secondary reactions are believed to be significant.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIn this work, detailed kinetic study of C\u003Csub\u003E2\u003C\/sub\u003EH\u003Csub\u003E4\u003C\/sub\u003E\/O\u003Csub\u003E3\u003C\/sub\u003E\/O\u003Csub\u003E2\u003C\/sub\u003E reaction system is conducted experimentally at T = 298 K. Many new products and intermediates are characterized using an online fast-mixing flow reactor system coupled with synchrotron radiation VUV photoionization mass spectrometry (SRVUV-PIMS). Groups of peroxy radicals are detected in considerable abundances for the first time and might be the key to rationalize the observed auto-ignitive phenomenon from chemical kinetic point of view. In parallel, the effect of O\u003Csub\u003E3\u003C\/sub\u003E addition on flame dynamics of C\u003Csub\u003E2\u003C\/sub\u003EH\u003Csub\u003E4\u003C\/sub\u003E is investigated using non-premixed laminar lifted flame. It appears the steady lifted flame could either ascend or descend with O\u003Csub\u003E3\u003C\/sub\u003E addition, depending on the initial flame liftoff height before O\u003Csub\u003E3\u003C\/sub\u003E is added. This outcome is inconsistent with similar experiment using saturated fuel, in which only flame liftoff height decrease was observed. The corresponding kinetic\/dynamic interaction is proposed and qualitatively supported by numerical simulations.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cul\u003E\r\n\t\u003Cli\u003EProf. Wenting Sun \u0026ndash; School of Aerospace Engineering (advisor)\u003C\/li\u003E\r\n\t\u003Cli\u003EProf. Jechiel Jagoda\u0026ndash; School of Aerospace Engineering\u003C\/li\u003E\r\n\t\u003Cli\u003EProf. Lakshmi Sankar \u0026ndash; School of Aerospace Engineering\u003C\/li\u003E\r\n\u003C\/ul\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Investigation of Ozone Assisted Ethylene Combustion at Low-Temperature: Kinetics and Dynamics"}],"uid":"27707","created_gmt":"2020-04-27 18:23:17","changed_gmt":"2020-04-27 18:23:17","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2020-04-29T10:00:00-04:00","event_time_end":"2020-04-29T12:00:00-04:00","event_time_end_last":"2020-04-29T12:00:00-04:00","gmt_time_start":"2020-04-29 14:00:00","gmt_time_end":"2020-04-29 16:00:00","gmt_time_end_last":"2020-04-29 16:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"102851","name":"Phd proposal"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}