A study of natural gas/DME combustion in HCCI engines using CFD with detailed chemical kinetics

Fuel ◽  
2007 ◽  
Vol 86 (10-11) ◽  
pp. 1483-1489 ◽  
Author(s):  
Song-Charng Kong
Keyword(s):  
Natural Gas ◽  
Chemical Kinetics ◽  
Detailed Chemical Kinetics ◽  
Hcci Engines ◽  
Detailed Chemical

The Effects of Using Formaldehyde as an Additive on the Performance of an HCCI Engine Fueled With Natural Gas

2010 ◽  
Author(s):  
Omid Jahanian ◽  
Seyed Ali Jazayeri
Keyword(s):  
Natural Gas ◽  
Chemical Kinetics ◽  
Thermodynamic Model ◽  
Fuel Mixture ◽  
Volumetric Efficiency ◽  
Detailed Chemical Kinetics ◽  
Operating Condition ◽  
Hcci Engine ◽  
Additive Content ◽  
Detailed Chemical

In this paper, the performance of a natural gas HCCI engine is studied through a thermodynamic model including detailed chemical kinetics. Then the influence of using formaldehyde as an additive on the engine characteristics has been investigated. Results show that it is possible to change engine working limits using this additive. Furthermore, there is an optimum additive content for each operating condition which leads to higher output work and power. It is also shown that the air/fuel mixture will ignite earlier using this additive so it is conceivable to reduce inlet mixture temperature resulting in better performance due to higher volumetric efficiency.

Use of Detailed Chemical Kinetics to Study HCCI Engine Combustion With Consideration of Turbulent Mixing Effects

2002 ◽  
Vol 124 (3) ◽  
pp. 702-707 ◽  
Author(s):  
S.-C. Kong ◽  
R. D. Reitz
Keyword(s):  
Chemical Kinetics ◽  
Turbulent Mixing ◽  
Combustion Process ◽  
Reaction Rates ◽  
Detailed Chemical Kinetics ◽  
Wide Range ◽  
Hcci Engines ◽  
Heavy Duty Diesel ◽  
Flame Chemistry ◽  
Detailed Chemical

Detailed chemical kinetics was used in an engine CFD code to study the combustion process in HCCI engines. The CHEMKIN code was implemented in KIVA such that the chemistry and flow solutions were coupled. The reaction mechanism consists of hundreds of reactions and species and is derived from fundamental flame chemistry. Effects of turbulent mixing on the reaction rates were also considered. The results show that the present KIVA/CHEMKIN model is able to simulate the ignition and combustion process in three different HCCI engines including a CFR engine and two modified heavy-duty diesel engines. Ignition timings were predicted correctly over a wide range of engine conditions without the need to adjust any kinetic constants. However, it was found that the use of chemical kinetics alone was not sufficient to accurately simulate the overall combustion rate. The effects of turbulent mixing on the reaction rates need to be considered to correctly simulate the combustion and heat release rates.

Fast and accurate CFD-model for NOx emission prediction during oxy-fuel combustion of natural gas using detailed chemical kinetics

Fuel ◽  
2020 ◽  
Vol 264 ◽  
pp. 116841 ◽  
Author(s):  
C. Schluckner ◽  
C. Gaber ◽  
M. Landfahrer ◽  
M. Demuth ◽  
C. Hochenauer
Keyword(s):  
Natural Gas ◽  
Chemical Kinetics ◽  
Fuel Combustion ◽  
Nox Emission ◽  
Cfd Model ◽  
Detailed Chemical Kinetics ◽  
Detailed Chemical

Numerical CFD evaluation of a flameless burner using detailed chemical kinetics

2017 ◽  
Author(s):  
Marco Antonio Nascimento ◽  
Lucilene Oliveria Rodrigues ◽  
Fagner Luis Goulart Dias
Keyword(s):  
Chemical Kinetics ◽  
Detailed Chemical Kinetics ◽  
Flameless Burner ◽  
Detailed Chemical
Sign in / Sign up

Export Citation Format

Share Document