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Modeling wall film formation and vaporization of a gasoline surrogate fuel

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Title: Modeling wall film formation and vaporization of a gasoline surrogate fuel
Authors: Kobashi, Yoshimitsu Browse this author →KAKEN DB
Zama, Yoshio Browse this author
Kuboyama, Tatsuya Browse this author
Keywords: Gasoline direct injection engine
Wall film
Gasoline surrogate fuel
Issue Date: Feb-2020
Publisher: Elsevier
Journal Title: International journal of heat and mass transfer
Volume: 147
Start Page: 119035
Publisher DOI: 10.1016/j.ijheatmasstransfer.2019.119035
Abstract: To simulate the wall film formation and vaporization processes in gasoline direct-injection spark-ignition engines including considerations of the physical properties and vapor-liquid equilibrium of multi-component fuels, spray-wall interaction sub-models were implemented with the 3D-CFD software HINOCA which has been developed for automotive engine cylinder simulations. The models used were the Senda model for spray-wall impingement including splash, deposition, droplet-droplet interactions, and droplet-film interactions; the O'Rourke model for heat transfer and film vaporization; a simple film flow model considering momentum conservation; and Raoult's law for vapor-liquid equilibrium. First, the model validated the calculated results for a single-component fuel (iso-octane) through comparisons with experimental data in terms of wall film area and heat flux between the wall and film. Second, numerical simulations were conducted with a 5-component gasoline surrogate fuel which was designed taking into account the average octane number, aromatic content, and distillation characteristic. The results showed clear differences in the contributions of the 5 components to the wall film, and the possibility that the aromatic content with higher carbon atoms could be a source of soot formation.
Rights: © <2020>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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