Combustion Characteristics of Biogas Fuel Using Particularly Simplified Reaction Mechanism for HCCI Engines

To improve simulations of the flame and pressure wave propagation process and investigate the combustion characteristics of a wave rotor combustor (WRC), direct relation graphs with error propagation (DRGEP), quasi-steady-state assumption (QSSA), and sensitivity analysis were used to establish a reduced reaction mechanism comprised of 23 species and 55 elementary reactions, based on the LLNL N-Butane mechanism. The reduced reaction mechanism of ethylene was combined with an eddy dissipation concept (EDC) model to simulate the flame propagation characteristics in a simplified WRC channel. The effects of spoilers with different blockage ratios and hot-jets of different species on combustion characteristics of flame propagation and pressure rise in the WRC channel were investigated. When the heated inert air was used as hot-jet, the ignition delay time of WRC would increase, which indicated that the activity of the burned gas from the hot-jet igniter would affect the ignition delay time. The spoiler facilitates the coupling of flame and shock waves to reduce the coupling time and distance. With the blockage ratio of the spoiler increasing, the coupling time and distance would be reduced.

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Numerical investigation of the effects of volatile matter composition and chemical reaction mechanism on pulverized coal combustion characteristics

Fuel ◽

10.1016/j.fuel.2017.08.115 ◽

2017 ◽

Vol 210 ◽

pp. 695-704 ◽

Cited By ~ 18

Author(s):

Xu Wen ◽

Haiou Wang ◽

Yujuan Luo ◽

Kun Luo ◽

Jianren Fan

Keyword(s):

Reaction Mechanism ◽

Numerical Investigation ◽

Chemical Reaction ◽

Coal Combustion ◽

Volatile Matter ◽

Combustion Characteristics ◽

Pulverized Coal ◽

Pulverized Coal Combustion ◽

Chemical Reaction Mechanism

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Combustion Characteristics of Advanced Vortex Combustor Burning H2 Fuel

Volume 8A: Heat Transfer and Thermal Engineering ◽

10.1115/imece2014-37475 ◽

2014 ◽

Cited By ~ 1

Author(s):

Yangbo Deng ◽

Xi Jiang ◽

Fengmin Su

Keyword(s):

Reaction Mechanism ◽

Pressure Loss ◽

Total Pressure ◽

Equivalence Ratio ◽

Combustion Efficiency ◽

Combustion Characteristics ◽

Main Flow ◽

Total Pressure Loss ◽

Pressure Loss Coefficient ◽

Set Up

The combustion characteristics of the advanced vortex combustor (AVC) burning H2 fuel are studied numerically. First, using the 19-step reaction mechanism, the flame morphology of the pre-mixed H2/Air combustion under the different conditions, is computed. The calculation results are in agreement with experimental data from the literature. Second, a numerical model of a lean premixed H2/Air combustion is set up, based on the 19-step reaction mechanism. A numerical simulation is carried out to study the combustion characteristics of the AVC. The results show that the combustion can be steadily maintained, with the equivalence ratio of the H2/Air main flow kept at 0.45. At the same time, the total pressure loss coefficient is 2.77% and the combustion efficiency is 99.8%. The total pressure loss, vortex configuration and stability, combustion efficiency of the AVC are influenced by the equivalence ratio, total pressure and static pressure of main flow in the AVC.

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A Study on the Combustion Characteristics of Dieseline Blend in HCCI Engines

10.1007/978-981-16-4222-7_101 ◽

2021 ◽

pp. 927-933

Author(s):

P. S. Srivathsan ◽

Praveen Ramanujam ◽

K. Prasanth ◽

S. Soma Sundaram

Keyword(s):

Combustion Characteristics ◽

Hcci Engines

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Effect of Ethanol–Diesel Fuel Blends on Autoignition and Combustion Characteristics in HCCI Engines

International Conference on Aerospace Sciences and Aviation Technology ◽

10.21608/asat.2017.22370 ◽

2017 ◽

Vol 17 (AEROSPACE SCIENCES) ◽

pp. 1-15

Author(s):

Aly Elzahaby ◽

Medhat Elkelawy ◽

Hagar Bastawissi ◽

Saad El-Malla ◽

Abdel Moneim Naceb

Keyword(s):

Diesel Fuel ◽

Combustion Characteristics ◽

Fuel Blends ◽

Hcci Engines

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Arylation of enelactams using TIPSOTf: reaction scope and mechanistic insight

Organic Chemistry Frontiers ◽

10.1039/d0qo01396j ◽

2021 ◽

Author(s):

Tomasz J. Idzik ◽

Zofia M. Myk ◽

Łukasz Struk ◽

Magdalena Perużyńska ◽

Gabriela Maciejewska ◽

...

Keyword(s):

Reaction Mechanism ◽

Multinuclear Nmr ◽

Mechanistic Insight ◽

Nmr Study ◽

Wide Range

Triisopropylsilyltrifluoromethanesulfonate can be effectively used for the arylation of a wide range of enelactams. The multinuclear NMR study provided deep insights into the reaction mechanism.

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