Numerical Study on Spray Combustion Processes inn-Heptane and Dimethyl Ether Fueled Diesel Engines

2009 ◽  
Vol 23 (10) ◽  
pp. 4917-4930 ◽  
Author(s):  
Yongwook Yu ◽  
Sungmo Kang ◽  
Yongmo Kim ◽  
Kwan-Soo Lee
Keyword(s):  
Dimethyl Ether ◽  
Diesel Engines ◽  
Numerical Study ◽  
Spray Combustion ◽  
Combustion Processes

Scaling spray combustion processes in marine low-speed diesel engines

Fuel ◽  
2019 ◽  
Vol 258 ◽  
pp. 116133 ◽  
Author(s):  
Xinyi Zhou ◽  
Tie Li ◽  
Yijie Wei ◽  
Sichen Wu
Keyword(s):  
Diesel Engines ◽  
Spray Combustion ◽  
Low Speed ◽  
Combustion Processes

Numerical Study of Combustion Processes and Pollutant Formation in HSDI Diesel Engines

2004 ◽  
Author(s):  
Hoojoong Kim ◽  
Namil Heo ◽  
Yongmo Kim ◽  
Je-Hyung Lee ◽  
Joon Kyu Lee
Keyword(s):  
Diesel Engines ◽  
Numerical Study ◽  
Pollutant Formation ◽  
Combustion Processes

Experimental and numerical study of biomass fast pyrolysis oil spray combustion: Advanced laser diagnostics and emission spectrometry

Fuel ◽  
2019 ◽  
Vol 252 ◽  
pp. 125-134 ◽  
Author(s):  
Pál Tóth ◽  
Christian Brackmann ◽  
Yngve Ögren ◽  
Manu Naduvil Mannazhi ◽  
Johan Simonsson ◽  
...  
Keyword(s):  
Laser Diagnostics ◽  
Numerical Study ◽  
Fast Pyrolysis ◽  
Emission Spectrometry ◽  
Spray Combustion ◽  
Pyrolysis Oil ◽  
Biomass Fast Pyrolysis

A Numerical Study for the Effect of Liquid Film on Soot Formation of Impinged Spray Combustion

2021 ◽  
Author(s):  
Zhihao Zhao ◽  
Xiucheng Zhu ◽  
Le Zhao ◽  
Meng Tang ◽  
Seong-Young Lee
Keyword(s):  
Liquid Film ◽  
Soot Formation ◽  
Numerical Study ◽  
Spray Combustion

scholarly journals Ignition Process and Flame Lift-Off Characteristics of dimethyl ether (DME) Reacting Spray

2021 ◽  
Vol 7 ◽  
Author(s):  
Khanh Duc Cung ◽  
Ahmed Abdul Moiz ◽  
Xiucheng Zhu ◽  
Seong-Young Lee
Keyword(s):  
Dimethyl Ether ◽  
Alternative Fuels ◽  
Chemical Properties ◽  
Injection Pressure ◽  
High Reactivity ◽  
Combustion Characteristic ◽  
Spray Combustion ◽  
Ignition Process ◽  
Compression Ignition ◽  
Lift Off

Advanced combustion systems that utilize different combustion modes and alternative fuels have significantly improved combustion performance and emissions compared to conventional diesel or spark-ignited combustions. As an alternative fuel, dimethyl ether (DME) has been receiving much attention as it runs effectively under low-temperature combustion (LTC) modes such as homogeneous charge compression ignition (HCCI) and reactivity control combustion ignition (RCCI). Under compression-ignition (CI), DME can be injected as liquid fuel into a hot chamber, resulting in a diesel-like spray/combustion characteristic. With its high fuel reactivity and unique chemical formula, DME ignites easily but produces almost smokeless combustion. In the current study, DME spray combustion under several different conditions of ambient temperature (Tamb = 750–1100 K), ambient density (ρamb = 14.8–30 kg/m3), oxygen concentration (O2 = 15–21%), and injection pressure (Pinj = 75–150 MPa) were studied. The results from both experiments (constant-volume combustion vessel) and numerical simulations were used to develop empirical correlations for ignition and lift-off length. Compared to diesel, the established correlation of DME shows a similar Arrhenius-type expression. Sensitivity studies show that Tamb and Pinj have a stronger effect on DME's ignition and combustion than other parameters. Finally, this study provides a simplified conceptual mechanism of DME reacting spray under high reactivity ambient (high Tamb, high O2) and LTC conditions. Finally, this paper discusses engine operating strategies using a non-conventional fuel such as DME with different reactivity and chemical properties.

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