Combustion Control Chemical-Kinetics Studies with Natural Gas in HCRI Enhanced Four-Stroke DI SI

2011 ◽  
Author(s):  
David A. Blank
Keyword(s):  
Natural Gas ◽  
Chemical Kinetics ◽  
Combustion Control ◽  
Kinetics Studies ◽  
Control Chemical

Size Control, Chemical Kinetics, and Theoretical Analysis for the Production of Fe3O4 Nanoparticles with a High Specific Absorption Rate

2020 ◽  
Vol 59 (38) ◽  
pp. 16669-16683
Author(s):  
José de Jesús Ibarra-Sánchez ◽  
Karla J. Delgado−Carrillo ◽  
A. Ceja-Fdz ◽  
D. Olivares-Vera ◽  
A. H. Sámano ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Chemical Kinetics ◽  
Fe3o4 Nanoparticles ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Size Control ◽  
Specific Absorption ◽  
Control 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.

328 Combustion Control in Natural-Gas PCCI Engine by Ozone Addition into Intake Gas

2005 ◽  
Vol 2005.80 (0) ◽  
pp. _3-55_-_3-56_
Author(s):  
Ali MOHAMMADI ◽  
Atsushi KOMADA ◽  
Hiroshi KAWANABE ◽  
Takuji ISHIYAMA ◽  
Masahiro SHIOJI
Keyword(s):  
Natural Gas ◽  
Combustion Control ◽  
Ozone Addition

201 Chemical Kinetics Study on Spray Combustion Control Using Dual-Component Fuel

2015 ◽  
Vol 2015.90 (0) ◽  
pp. 50
Author(s):  
Kazunari Kuwahara ◽  
Masaki Nakatani ◽  
Yoshimitsu Kobashi ◽  
Eriko Matsumura ◽  
Jiro Senda
Keyword(s):  
Chemical Kinetics ◽  
Spray Combustion ◽  
Kinetics Study ◽  
Combustion Control

Ignition Delay Time and Laminar Flame Speed Calculations for Natural Gas/Hydrogen Blends at Elevated Pressures

2012 ◽  
Author(s):  
Marissa Brower ◽  
Eric Petersen ◽  
Wayne Metcalfe ◽  
Henry J. Curran ◽  
Marc Füri ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Chemical Kinetics ◽  
Ignition Delay ◽  
Ignition Delay Time ◽  
Laminar Flame ◽  
Turbulent Flame ◽  
Flame Speed ◽  
Laminar Flame Speed ◽  
Hydrogen Addition

Applications of natural gas and hydrogen co-firing have received increased attention in the gas turbine market, which aims at higher flexibility due to concerns over the availability of fuels. While much work has been done in the development of a fuels database and corresponding chemical kinetics mechanism for natural gas mixtures, there are nonetheless few if any data for mixtures with high levels of hydrogen at conditions of interest to gas turbines. The focus of the present paper is on gas turbine engines with primary and secondary reaction zones as represented in the Alstom and Rolls Royce product portfolio. The present effort includes a parametric study, a gas turbine model study, and turbulent flame speed predictions. Using a highly optimized chemical kinetics mechanism, ignition delay times and laminar burning velocities were calculated for fuels from pure methane to pure hydrogen and with natural gas/hydrogen mixtures. A wide range of engine-relevant conditions were studied: pressures from 1 to 30 atm, flame temperatures from 1600 to 2200 K, primary combustor inlet temperature from 300 to 900 K, and secondary combustor inlet temperatures from 900 to 1400 K. Hydrogen addition was found to increase the reactivity of hydrocarbon fuels at all conditions by increasing the laminar flame speed and decreasing the ignition delay time. Predictions of turbulent flame speeds from the laminar flame speeds show that hydrogen addition affects the reactivity more when turbulence is considered. This combined effort of industrial and university partners brings together the know-how of applied, as well as experimental and theoretical disciplines.

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