Effects of EGR on soot processes in n-dodecane spray combustion at high ambient temperature

Min Zhang*, Jiun Cai Ong, Kar Mun Pang, Xue-Song Bai, Jens Honore Walther

*Corresponding author for this work

Research output: Contribution to conferencePaperResearchpeer-review

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Abstract

This paper presents the numerical results of soot evolution in a constant volume chamber under different exhaust gas recirculation (EGR) levels at an ambient temperature of 1100 K by employing a two-equation soot model. The contribution and significance of each soot process on the net soot mass production are investigated. The numerical setup is able to capture the experimentally observed monotonic trend of the soot mass, in which soot mass increases with decreasing
oxygen (O2 ) level. The simulation results demonstrate that soot oxidation rates, particularly by hydroxyl radicals (OH), are the more dominating factors to the monotonic trend as compared to the inception and surface growth rates under different EGR.
Original languageEnglish
Publication date2020
Number of pages5
Publication statusPublished - 2020
EventInternational Conference on Applied Energy 2020 - Virtual event, Bangkok, Thailand
Duration: 1 Dec 202010 Dec 2020

Conference

ConferenceInternational Conference on Applied Energy 2020
LocationVirtual event
Country/TerritoryThailand
CityBangkok
Period01/12/202010/12/2020

Keywords

  • EGR
  • High ambient temperature
  • Soot formation
  • Soot oxidation

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