題目：Model Development for Turbulent Reacting Flow
時間：2024年12月30日 13:30-16:00
地點：機械與動力工程學院 F201會議室
邀請人：來姝玥 副教授（航空動力研究所）
Biography
Dr?Leo?(XiaoHang)?Fang?is?an?Assistant?Professor?at?the?Schulich?School?of?Engineering,?University?of?Calgary?and?a?visiting?academic?of?the?Thermal?Propulsion?System?Research?Group?academic?of?the?Thermal?Propulsion?System?Research?Group?(TPSRG)?at?the?University?of?Oxford.?Before?his?position?in?Calgary,?he?was?an?engineering?science?lecturer?and?research?fellow?at?Oriel??Sommerville?College?and?a?researcher?at?TPSRG.?His?research?interests?include?turbulent?combustion?modeling,?high-fidelity?simulations?with?detailed?chemistry,?and?novel?computational?diagnostics?tools.?He?received?a?BASc?from?the?University?of?British?Columbia?in?Mechanical?Engineering?and?a?PhD?in?Engineering?Science?from?the?University?of?Oxford.?His?work?is?currently?supported?by?the?John?Fell?Fund,?the?University?of?Oxford,?UK?Research?and?Innovation?(UKRI),?the?Natural?Sciences?and?Engineering?Research?Council?of?Canada?(NSERC),?Alberta?Innovate,?and?the?University?of?Calgary.?He?is?currently?leading?a?center?of?excellence?in?hydrogen?combustion.
Abstract
Global?energy?demand?is?estimated?to?increase?by?a?quarter?by?2040.?While?significant?efforts?have?been?made?to?renewable?power?generation?and?the?electrification?of?ground?transportation,?for?hard-to-electrify?transportation?industries?(e.g.?rail,?marine,?and?aviation),?novel?thermal?propulsion?systems?that?can?reduce?carbon?footprint?are?also?much?needed.?Research?groups?worldwide?are?exploring?alternative?fuels,?novel?combustion?chamber?designs,?and?increased?operating?envelopes?to?promote?low?carbon?footprint?combustion?modes.?Among?these,?ultralean?operations?are?found,?within?reason,?to?be?a?promising?control?strategy?for?optimizing?systems?relying?on?combustion?by?increasing?efficiency,?reducing?pollutants,?and?minimizing?CO2?emissions.?However,?accurate?prediction?of?combustion?in?–?and?the?mechanisms?and?rates?of?formation?of?pollutants?from?–?such?systems?is?challenging?because?of?the?complex?interactions?between?turbulence?and?chemical?reactions.?In?particular,?the?presence?of?partially?premixed?flames?in?these?systems?has?demonstrated?significant?challenges?for?current?model?approaches.?Therefore,?the?development?of?novel?combustion?models?suitable?for?propulsion?systems?at?partially?premixed?conditions?is?much?needed.?In?recent?years,?moment-based?numerical?models?are?found?to?hold?the?promise?of?simulating?a?very?wide?variety?of?different?combustion?problems.?However,?most?of?the?work?conducted?is?primarily?with?simple?fuels?(e.g.?methane)?and?under?laboratory?conditions.?In?this?talk,?we?will?discuss?what?are?the?challenges?and?advantages?of?using?such?models?in?practical?engineering?systems?with?renewable?fuels?such?as?DME?and?hydrogen.?We?will?also?cover?some?recent?development?of?a?hydrogen?center?of?excellence?in?Canada.
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地址：上海市東川路800號上海交通大學閔行校區(qū)機械與動力工程學院
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Email：sjtume@sjtu.edu.cn