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연구성과 > 금주의 우수논문

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SCI-E Article

Modeling flash boiling breakup phenomena of fuel spray from multi-hole type direct-injection spark-i
성명 박성욱()
소속 공과대학 기계공학부
캠퍼스
우수선정주 2018년 04월 4째주
Author Kim, Taehoon (Dept Mech Convergence Engn); 박성욱 (Sch Mech Engn);
Corresponding Author Info Park, S (reprint author), Hanyang Univ, Sch Mech Engn, 222 Wangsimni Ro, Seoul 04763, South Korea.
E-mail 이메일 아이콘parks@hanyang.ac.kr
Document Type Article
Source ENERGY CONVERSION AND MANAGEMENT Volume:160 Issue: Pages:165-175 Published:2018
Times Cited 0
External Information http://dx.doi.org/10.1016/j.enconman.2018.01.042
Abstract A flash breakup model was developed in this study, based on bubble dynamics. The Rayleigh-Plesset equation was used to predict bubble growth inside of a droplet. A single bubble for each droplet was assumed. When the void fraction exceeds critical value, breakup was assumed. The velocity component normal to the direction in which the droplet moved was predicted by the sum of the velocities predicted by energy conservation, the pressure difference between the inside and outside of droplet, and the bubble growth rate. The thermodynamic mechanical breakup model was formed using the flash breakup and Kelvin-Helmholtz Rayleigh-Taylor breakup models. Using the developed breakup module, the decrease in spray tip penetration, spray plume expansion, and change in spray target were predicted for single-component fuels and compared with experimental results. A gasoline flash boiling spray was modeled using various fuel vapor pressure for the Rayleigh-Plesset equation. from the comparison between the analyses with and without the flash breakup model, it was concluded that the flash breakup model should be used to predict deformations in spray structure for flash boiling sprays.
Web of Science Categories Thermodynamics; Energy & Fuels; Mechanics
Funding National Research Foundation of Korea (NRF); Korea government (MSIP) [NRF-2016R1A1A1A05919795]; Korea Institute of Energy Technology Evaluation and Planning (KETEP) from Ministry of Trade, Industry and Energy, South Korea [20164010200860]
Language English
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