Reduced mechanisms are needed for use with computational fluid dynamic codes (CFD) utilized in the design of combustors. Typically, reduced mechanisms are created from a detailed mechanism, which contain numerous species and reactions that are computationally difficult to handle using most CFD codes. Recently, it has been shown that the detailed aramco 2.0 mechanism well predicted the available experimental data at high pressures and in highly CO2 diluted methane mixtures. Here, a 23-species gas-phase mechanism is derived from the detailed aramco 2.0 mechanism by path-flux-analysis method (PFA) by using CHEM-RC. It is identified that the reaction CH4 + HO2 ⇔ CH3 + H2O2 is very crucial in predicting the ignition delay times (IDTs) under current conditions. Further, it is inferred that species C2H3 and CH3OH are very important in predicting IDTs of lean sCO2 methane mixtures. Also, the 23-species mechanism presented in this work is able to perform on par with the detailed aramco 2.0 mechanism in terms of simulating IDTs, perfectly stirred-reactor (PSR) estimates under various CO2 dilutions and equivalence ratios, and prediction of turbulence chemistry interactions. It is observed that the choice of equation of state has no significant impact on the IDTs of supercritical CH4/O2/CO2 mixtures but it influences supercritical H2/O2/CO2 mixtures considered in this work.
Skip Nav Destination
Article navigation
September 2018
Research-Article
Reduced Chemical Kinetic Mechanisms for Oxy/Methane Supercritical CO2 Combustor Simulations
K. R. V. Manikantachari,
K. R. V. Manikantachari
Center for Advanced Turbomachinery and
Energy Research,
University of Central Florida,
Orlando, FL 32816
e-mail: raghuvmkc@knights.ucf.edu
Energy Research,
University of Central Florida,
Orlando, FL 32816
e-mail: raghuvmkc@knights.ucf.edu
Search for other works by this author on:
Ladislav Vesely,
Ladislav Vesely
Faculty of Mechanical Engineering,
Department of Energy Engineering,
Czech Technical University in Prague,
Prague 166 36, Czech Republic;
Center for Advanced Turbomachinery and
Energy Research,
University of Central Florida,
Orlando, FL 32816
Department of Energy Engineering,
Czech Technical University in Prague,
Prague 166 36, Czech Republic;
Center for Advanced Turbomachinery and
Energy Research,
University of Central Florida,
Orlando, FL 32816
Search for other works by this author on:
Scott Martin,
Scott Martin
Eagle Flight Research Center,
Embry-Riddle Aeronautical University,
Daytona Beach, FL 32114
Embry-Riddle Aeronautical University,
Daytona Beach, FL 32114
Search for other works by this author on:
Jose O. Bobren-Diaz,
Jose O. Bobren-Diaz
Center for Advanced Turbomachinery and Energy
Research,
University of Central Florida,
Orlando, FL 32816
Research,
University of Central Florida,
Orlando, FL 32816
Search for other works by this author on:
Subith Vasu
Subith Vasu
Center for Advanced Turbomachinery and
Energy Research,
University of Central Florida,
Orlando, FL 32816
Energy Research,
University of Central Florida,
Orlando, FL 32816
Search for other works by this author on:
K. R. V. Manikantachari
Center for Advanced Turbomachinery and
Energy Research,
University of Central Florida,
Orlando, FL 32816
e-mail: raghuvmkc@knights.ucf.edu
Energy Research,
University of Central Florida,
Orlando, FL 32816
e-mail: raghuvmkc@knights.ucf.edu
Ladislav Vesely
Faculty of Mechanical Engineering,
Department of Energy Engineering,
Czech Technical University in Prague,
Prague 166 36, Czech Republic;
Center for Advanced Turbomachinery and
Energy Research,
University of Central Florida,
Orlando, FL 32816
Department of Energy Engineering,
Czech Technical University in Prague,
Prague 166 36, Czech Republic;
Center for Advanced Turbomachinery and
Energy Research,
University of Central Florida,
Orlando, FL 32816
Scott Martin
Eagle Flight Research Center,
Embry-Riddle Aeronautical University,
Daytona Beach, FL 32114
Embry-Riddle Aeronautical University,
Daytona Beach, FL 32114
Jose O. Bobren-Diaz
Center for Advanced Turbomachinery and Energy
Research,
University of Central Florida,
Orlando, FL 32816
Research,
University of Central Florida,
Orlando, FL 32816
Subith Vasu
Center for Advanced Turbomachinery and
Energy Research,
University of Central Florida,
Orlando, FL 32816
Energy Research,
University of Central Florida,
Orlando, FL 32816
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received March 11, 2018; final manuscript received March 15, 2018; published online April 26, 2018. Editor: Hameed Metghalchi.
J. Energy Resour. Technol. Sep 2018, 140(9): 092202 (10 pages)
Published Online: April 26, 2018
Article history
Received:
March 11, 2018
Revised:
March 15, 2018
Citation
Manikantachari, K. R. V., Vesely, L., Martin, S., Bobren-Diaz, J. O., and Vasu, S. (April 26, 2018). "Reduced Chemical Kinetic Mechanisms for Oxy/Methane Supercritical CO2 Combustor Simulations." ASME. J. Energy Resour. Technol. September 2018; 140(9): 092202. https://doi.org/10.1115/1.4039746
Download citation file:
Get Email Alerts
Fuel Consumption Prediction in Dual-Fuel Low-Speed Marine Engines With Low-Pressure Gas Injection
J. Energy Resour. Technol (December 2024)
A Semi-Analytical Rate-Transient Analysis Model for Fractured Horizontal Well in Tight Reservoirs Under Multiphase Flow Conditions
J. Energy Resour. Technol (November 2024)
Experimental Investigation of New Combustion Chamber Geometry Modification on Engine Performance, Emission, and Cylinder Liner Microstructure for a Diesel Engine
J. Energy Resour. Technol (December 2024)
Downdraft Gasification for Biogas Production: The Role of Artificial Intelligence
J. Energy Resour. Technol (December 2024)
Related Articles
Probing the Effects of NO x and SO x Impurities on Oxy-Fuel Combustion in Supercritical CO 2 : Shock Tube Experiments and Chemical Kinetic Modeling
J. Energy Resour. Technol (December,2020)
Thermal and Transport Properties for the Simulation of Direct-Fired sCO 2 Combustor
J. Eng. Gas Turbines Power (December,2017)
Numerical Analysis of Spray Characteristics With Methane and Nanoparticles Under Various Injection Velocities
J. Energy Resour. Technol (August,2023)
Measurements of Density and Sound Speed in Mixtures Relevant to Supercritical CO 2 Cycles
J. Energy Resour. Technol (October,2020)
Related Proceedings Papers
Related Chapters
Introduction
Nanomaterials in Glucose Sensing: Biomedical & Nanomedical Technologies - Concise Monographs
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Combined Cycle Power Plant
Energy and Power Generation Handbook: Established and Emerging Technologies