Solid fuel ignition and combustion characteristics under high-speed crossflows

1990 ◽  
Author(s):  
K. KUO
2019 ◽  
Vol 797 ◽  
pp. 327-335 ◽  
Author(s):  
Mohamed E. Mostafa ◽  
Hao Tang ◽  
Jun Xu ◽  
Huan Ying Chi ◽  
Kai Xu ◽  
...  

In this work, the ignition and combustion characteristics of mixed rice straw and sewage sludge pellets in air atmosphere were investigated using a plasma combustion system. One common pellet shape (solid spherical pellet) and another new shape (hollow spherical) are used in this study. High-speed camera was used to record and observe ignition and combustion process of pellets. In case of hollow pellets, the shape and distribution of flame are found to be better compared to solid pellets. Also, it is clear that the values of volatile combustion times in case of hollow pellets are low compared to solid pellets. The overall heat transfer enhanced in case of hollow pellet due to the large area subjected to hot gases and the high surface to volume ratio. Hollow pellet consumed less time for internal ignition and volatiles char combustion compared to solid pellet. Volatiles and char combustion lasted for 63.05 and 61 s, respectively for hollow pellet while these values were found to be 72.8 and 83 s, respectively for solid pellet.


2020 ◽  
Vol 24 (1 Part A) ◽  
pp. 171-181
Author(s):  
Wei Du ◽  
Qiankun Zhang ◽  
Meng Li ◽  
Jinchi Hou

The fuel quantity and injection pressure are two essential factors to optimize the injection strategy. In this paper, we focus on the investigation for the ignition and combustion characteristics of wall-impinged kerosene (RP-3) fuel spray at different injection quantities and pressures. Experiments are conducted in a constant volume combustion vessel to simulate the Diesel engine condition, adopting a single-hole nozzle with 0.22 mm. The flame images are captured using a high-speed camera, and then the behaviors of ignition and combustion are processed and analyzed. The main emphasis is placed on the variation laws of the ignition position distance, the ignition delay time, the combustion duration, the flame area, spatially integrated natural luminosity and time integrated natural luminosity.


2021 ◽  
pp. 1-10
Author(s):  
Florin Saceleanu ◽  
Lauren LeSergent ◽  
Yiqi Zhang ◽  
Victoria Kerr ◽  
John Z. Wen ◽  
...  

2020 ◽  
Vol 34 (11) ◽  
pp. 14741-14756
Author(s):  
Sensen Xing ◽  
Guanxiong Zhai ◽  
Haijun Mo ◽  
Paul R. Medwell ◽  
Anthony C. Y. Yuen ◽  
...  

2010 ◽  
Vol 183 (3) ◽  
pp. 285-302 ◽  
Author(s):  
K. T. Sullivan ◽  
N. W. Piekiel ◽  
S. Chowdhury ◽  
C. Wu ◽  
M. R. Zachariah ◽  
...  

2017 ◽  
Vol 32 (4) ◽  
pp. 4221-4226 ◽  
Author(s):  
Zhezi Zhang ◽  
Mingming Zhu ◽  
Jianbo Li ◽  
Kai Zhang ◽  
Gang Xu ◽  
...  

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