{"666986":{"#nid":"666986","#data":{"type":"event","title":"PhD Proposal by Shubham B. Karpe","body":[{"value":"\u003Cp\u003EShubham B. Karpe\u003Cbr \/\u003E\r\n(Advisor: Prof. Suresh Menon)\u003Cbr \/\u003E\r\nwill propose a doctoral thesis entitled,\u003Cbr \/\u003E\r\nRole of gas phase kinetics, turbulence-chemistry interactions, and model\u003Cbr \/\u003E\r\nsensitivities in soot observable processes\u003Cbr \/\u003E\r\nOn\u003C\/p\u003E\r\n\r\n\u003Cp\u003EAbstract\u003Cbr \/\u003E\r\nFriday, April 14 at 2:30 p.m.\u003Cbr \/\u003E\r\nMontgomery Knight Building 317\u003Cbr \/\u003E\r\nStringent government regulations regarding the emissions of non-volatile particulate matter\u003Cbr \/\u003E\r\n(nVPM) have motivated efforts to better predict soot formation and growth in a practical gas\u0026nbsp;\u003Cbr \/\u003E\r\nturbine engine. Reliable numerical methodologies can be a viable tool here but predicting soot\u0026nbsp;\u003Cbr \/\u003E\r\nnumerically is an inherently complex problem that is further aggravated by the presence of the\u0026nbsp;\u003Cbr \/\u003E\r\nmultiscale and multi-physics nature of soot-turbulence-chemistry interactions in a turbulent\u0026nbsp;\u003Cbr \/\u003E\r\nenvironment. Moreover, the current understanding of soot formation and growth is crippled with\u0026nbsp;\u003Cbr \/\u003E\r\nmajor uncertainties at each stage of soot formation and growth starting from its nucleation, and\u0026nbsp;\u003Cbr \/\u003E\r\nsurface growth, to aggregation, etc. The purpose of this research is to understand key factors\u0026nbsp;\u003Cbr \/\u003E\r\ninfluencing soot formation and growth in turbulent reacting flows in a systematic manner from\u0026nbsp;\u003Cbr \/\u003E\r\ncanonical to complex flows. First, zero-dimensional perfectly stirred reactors are used to\u0026nbsp;\u003Cbr \/\u003E\r\nestablish the role of gas phase kinetics and key model sensitivities (sizes, and concentrations of\u0026nbsp;\u003Cbr \/\u003E\r\ninception species as well as rates of coagulation and surface growth for soot particles) on global\u0026nbsp;\u003Cbr \/\u003E\r\nsoot predictions as well as soot particle size distribution functions. To simulate complex three-\u0026nbsp;\u003Cbr \/\u003E\r\ndimensional turbulent reacting flows, a multi-scale and multi-physics Linear Eddy Mixing (LEM)\u0026nbsp;\u003Cbr \/\u003E\r\nmodel, that takes into account the reaction, diffusion, and turbulent stochastic stirring at their\u0026nbsp;\u003Cbr \/\u003E\r\nrespective scales within the subgrid of Large Eddy Simulations (LES), is extended to account for\u0026nbsp;\u003Cbr \/\u003E\r\nsoot physics. It will be used to conduct simulations of the sooting turbulent bluff body stabilized\u0026nbsp;\u003Cbr \/\u003E\r\nflames of gaseous ethylene fuels for verification against the experimental data. Furthermore, this\u0026nbsp;\u003Cbr \/\u003E\r\nverified LEMLES based modeling framework will be used to assess the impact of model sensitivities\u0026nbsp;\u003Cbr \/\u003E\r\nsuch as the stages of nucleation, surface growth, and fractal evolution on a more canonical\u0026nbsp;\u003Cbr \/\u003E\r\nnon-premixed temporal mixing jet. Eventually, model simulations of soot formation and growth will\u0026nbsp;\u003Cbr \/\u003E\r\nbe shown in a more complex liquid fueled Rich-Burn-Quick-Quench-Lean-Burn (RQL) gas turbine\u0026nbsp;\u003Cbr \/\u003E\r\ncombustor while acknowledging key understandings of its sensitivities.\u003C\/p\u003E\r\n\r\n\u003Cp\u003ECommittee\u003Cbr \/\u003E\r\n\u2022 \u0026nbsp;Prof. Suresh Menon \u2013 School of Aerospace Engineering (advisor)\u003Cbr \/\u003E\r\n\u2022 \u0026nbsp;Prof. Adam Steinberg \u2013 School of Aerospace Engineering\u003Cbr \/\u003E\r\n\u2022 \u0026nbsp;Prof. Joseph Oefelein \u2013 School of Aerospace Engineering\u003Cbr \/\u003E\r\n\u2022 \u0026nbsp;Prof. Wenting Sun \u0026nbsp; \u2013 School of Aerospace Engineering\u003Cbr \/\u003E\r\n\u2022 \u0026nbsp;Prof. Michael Mueller \u2013 School of Mechanical and Aerospace Engineering, Princeton\u0026nbsp;\u003Cbr \/\u003E\r\nUniversity\u003Cbr \/\u003E\r\n\u0026nbsp;\u003C\/p\u003E\r\n","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003ERole of gas phase kinetics, turbulence-chemistry interactions, and model sensitivities in soot observable processes\u003C\/p\u003E\r\n","format":"limited_html"}],"field_summary_sentence":[{"value":"Role of gas phase kinetics, turbulence-chemistry interactions, and model sensitivities in soot observable processes"}],"uid":"27707","created_gmt":"2023-03-31 17:31:28","changed_gmt":"2023-03-31 17:31:28","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2023-04-14T14:30:25-04:00","event_time_end":"2023-04-14T16:30:25-04:00","event_time_end_last":"2023-04-14T16:30:25-04:00","gmt_time_start":"2023-04-14 18:30:25","gmt_time_end":"2023-04-14 20:30:25","gmt_time_end_last":"2023-04-14 20:30:25","rrule":null,"timezone":"America\/New_York"},"location":"Montgomery Knight Building 317","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"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}