Determining the normal flame velocity and critical extinction conditions in mixtures of hydrocarbons with chlorine

1984 ◽  
Vol 20 (6) ◽  
pp. 640-641
Author(s):  
A. V. Steblev
Keyword(s):  
Flame Velocity ◽  
Normal Flame ◽  
Critical Extinction ◽  
Normal Flame Velocity

scholarly journals Quantitative analysis of combustion process of marine dual fuel engine under the framework of iconology

2021 ◽  
Vol 9 (4B) ◽  
Author(s):  
Hongliang Yu ◽  
◽  
Weiwei Wang ◽  
Shulin Duan ◽  
Peiting Sun ◽  
...  
Keyword(s):  
Combustion Process ◽  
Image Feature ◽  
Combustion Stability ◽  
Dual Fuel ◽  
Flame Velocity ◽  
Combustion Duration ◽  
Engine Cylinder ◽  
Characteristic Values ◽  
Feature Values ◽  
Logical Mapping

The methane (CH4) burning interruption factor and the characteristic values characterizing the flame combustion state in the engine cylinder were defined. The logical mapping relationship between image feature values and combustion conditions in the framework of iconology was proposed. Results show that there are two periods of combustion instability and combustion stability during the combustion of dual fuel. The high temperature region with a cylinder temperature greater than 1800K is the largest at 17°CA after top dead center (TDC), accounting for 73.25% of the combustion chamber area. During the flame propagation, the radial flame velocity and the axial flame velocity are “unimodal” and “wavy,” respectively. During the combustion process, the CH4 burning interruption factor first increased and then decreased. The combustion duration in dual fuel mode is 21.25°CA, which is 15.5°CA shorter than the combustion duration in pure diesel mode.

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