FL3-2: A Study on the Spray Combustion Characteristics of PME Mixed Diesel Oil(FL: Fuels and Lubricants,General Session Papers)

Author(s):  
Masato AOKI ◽  
Satoshi KATAOKA ◽  
Akihiko AZETSU
2006 ◽  
Vol 2006.7 (0) ◽  
pp. 203-204
Author(s):  
Tadashi MATSUDA ◽  
Karn ROMPHOL ◽  
Akihiko AZETSU ◽  
Kanit WATTANAVICHIEN

2008 ◽  
Vol 2008.3 (0) ◽  
pp. 119-120
Author(s):  
Masato AOKI ◽  
Satoshi KATAOKA ◽  
Hiroomi HAGIO ◽  
Akihiko AZETSU

Author(s):  
Qiuyu Zheng ◽  
Xu Wang ◽  
Yi Liu ◽  
Feng Jiang ◽  
Tianqi Liu

With the rapid scale expansion of the first generation of bio-liquid fuels, its impact on the prices of agricultural products, food security and the environment has begun to emerge and attracted extensive attention from governments and academia. A new multi-dimensional model of biodiesel spray combustion in an internal combustion (IC) engine is designed. Firstly, the BP neural network mining model is used to extract the spray combustion data of the IC engine. Then, based on the combustion data of biodiesel load in an internal combustion engine, burning rate and heat release, the principle of spray combustion of biodiesel is analyzed. Finally, from the two aspects of gas-phase control and liquid phase control, a multi-dimensional model of biodiesel spray combustion in IC engine is established and the spray combustion characteristics of biodiesel in IC engine are analyzed. The research results show that the model can effectively analyze the effect of load and fuel temperature on the spray combustion characteristics of biodiesel and the results of the model are almost the same as the actual data and the calculation accuracy is high. It is an effective method for studying the spray combustion characteristics of biodiesel.


Author(s):  
Wenjin Qin ◽  
Dengbiao Lu ◽  
Lihui Xu

Abstract In this research, n-dodecane and JW are selected as single and multi-component surrogate fuel of aviation kerosene to study the Jet-A spray combustion characteristics. The spray combustion phenomena are simulated using large eddy simulation coupled with detailed chemical reaction mechanism. Proper orthogonal decomposition method is applied to analyze the flow field characteristics, and the instantaneous velocity field are decomposed into four parts, namely the mean field, coherent field, transition field and turbulent field, respectively. The four subfields have their own characteristics. In terms of different fuels, JW has a higher intensity of coherent structures and local vortices than n-dodecane, which promotes the fuel-air mixing and improves the combustion characteristics, and the soot formation is significantly reduced. In addition, with the increase of initial temperature, the combustion is more intense, the ignition delay time is advanced, the flame lift-off length is reduced, and soot formation is increased accordingly.


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