Recent advances in low-gradient combustion modelling of hydrogen fuel blends

Article Thermodynamics

Modelling of MILD combustion in a lab-scale furnace with an extended FGM model including turbulence-radiation interaction

Xu Huang et al.

Summary: The study presents a DA-FGM model for MILD combustion and its application in a lab-scale furnace, showing good agreement with experimental data.

COMBUSTION AND FLAME (2022)

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Article Economics

Is the ETS an effective environmental policy? Undesired interaction between energy-mix, fuel-switch and electricity prices

Alberto M. Bersani et al.

Summary: Fuel switching is favored while hindering the expansion of renewable technology, resulting in an increase in expected emissions.

ENERGY ECONOMICS (2022)

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Article Thermodynamics

Identification of combustion mode under MILD conditions using Chemical Explosive Mode Analysis

N. A. K. Doan et al.

Summary: The study reveals that in MILD combustion conditions, ignition is the main combustion mode, while in non-premixed conditions, the predominance of the ignition mode depends on the axial location and mixture fraction stratification. Additionally, the various combustion modes are strongly correlated with mixture fraction.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2021)

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Article Energy & Fuels

A numerical study of localized swirling injection of oxidizer for homogeneous combustion with oxygen enrichment

Kumar Aanjaneya et al.

Summary: This study numerically investigates the effectiveness of localized swirling injection in enhancing reactant dilution for an HC combustor operating with enriched oxidizers. The results show that swirling injection has effects on the flow field and NOx emissions, with an optimal swirl intensity for reducing NOx emissions. Competition between swirl-assisted and entrainment-driven dilution is observed, indicating a trade-off relationship in terms of NOx emissions.

FUEL (2021)

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Article Energy & Fuels

Numerical simulation of propane MILD combustion in a lab-scale cylindrical furnace

Yaojie Tu et al.

Summary: This study investigates propane combustion in a laboratory-scale cylindrical furnace under MILD and traditional combustion conditions using CFD numerical simulation. Results show that MILD combustion produces lower heat flux on furnace walls compared to traditional combustion, with distinct heat transfer behaviors. Additionally, different C3H8 consumption pathways and CO formation mechanisms were observed between the two combustion modes.

FUEL (2021)

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Article Chemistry, Physical

Emissions and dynamic stability of the flameless combustion regime using hydrogen blends with natural gas

Fabian E. Cano Ardila et al.

Summary: Flameless combustion regime, considered one of the most promising types of combustion in the 21st century, has been found to have improved stability and reduced dynamic instability level with the addition of hydrogen.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Physical

Effects of hydrogen addition on structure and NO formation of highly CO-Rich syngas counterflow nonpremixed flames under MILD combustion regime

Namsu Kim et al.

Summary: The study numerically investigated the combustion processes and NO formation characteristics of highly CO-rich syngas flames, finding that hydrogen enrichment and oxygen augmentation substantially influence NO emission characteristics and dominant NO production routes.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Physical

Comprehensive numerical study of molecular diffusion effects and Eddy Dissipation Concept model in MILD combustion

Amiratabak Azarinia et al.

Summary: This paper investigates several approaches to increase the numerical solution accuracy of MILD combustion through effects of molecular diffusion, adjustments of EDC coefficients, and application of reaction fraction factor. The results indicate that enthalpy transport caused by molecular diffusion must be considered, adjusting EDC coefficients can maintain the maximum temperature, and applying the reaction fraction factor increases the accuracy of the numerical solution in the MILD region.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Physical

NO emission from non-premixed MILD combustion of biogas-syngas mixtures in opposed jet configuration

Selsabil Boussetla et al.

Summary: This paper explores NO emissions from MILD combustion of a mixture of biogas and syngas, considering five NO routes and various operating conditions. It is found that hydrogen enhances temperature levels under MILD regime, while oxygen increase leads to disappearance of MILD regime. The reburning route is identified as the third most significant route in NO production, influenced by all parameters except strain rate.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Review Thermodynamics

Why can't we just burn hydrogen? Challenges when changing fuels in an existing infrastructure

Howard Levinsky

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2021)

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Article Engineering, Aerospace

Intensification of MILD combustion of methane and hydrogen blend by the application of a magnetic field- a numerical study

Mohammadreza Zharfa et al.

Summary: The study numerically investigates the influence of an imposed magnetic field on reacting flow under hydrogen-methane moderate or intense low oxygen dilution regime. By adding baffles near inlet nozzles and applying a variable intensity magnetic field, significant reductions in air preheating temperature required for combustion are achieved, with thicker reacting flow and intensified heat release observed.

ACTA ASTRONAUTICA (2021)

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Article Energy & Fuels

Evaluation of ignition process and NOx reduction of coal under moderate and intensive low-oxygen dilution combustion by implementing fuel-rich/lean technology

Mingchen Xu et al.

Summary: The study found that the implementation of fuel-rich/lean technology can improve coal ignition by adjusting the primary air supply and significantly affect the coal consumption rate near the burner exit. The adjustment of primary air supply has a greater impact on the coal consumption rate near the burner exit, and different mixing sequences can influence the ignition process and NOx emissions.

FUEL (2021)

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Article Thermodynamics

Analysis of Some Recently Proposed Modifications to the Eddy Dissipation Concept (EDC)

Ivar S. Ertesvag

COMBUSTION SCIENCE AND TECHNOLOGY (2020)

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Article Thermodynamics

Comprehensive kinetic study of combustion technologies for low environmental impact: MILD and OXY-fuel combustion of methane

Ghobad Bagheri et al.

COMBUSTION AND FLAME (2020)

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Article Energy & Fuels

A numerical study of confined turbulent jets for homogeneous combustion with oxygen enrichment

Kumar Aanjaneya et al.

FUEL (2020)

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Article Thermodynamics

An extended weighted-sum-of-gray-gases model to account for all CO2 - H2O molar fraction ratios in thermal radiation

Hadi Bordbar et al.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2020)

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Article Chemistry, Physical

Effect of hydrogen addition on NOx formation mechanism and pathways in MILD combustion of H2-rich low calorific value fuels

Ghufran Ali et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

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Article Energy & Fuels

Numerical optimization of the influence of multiple deep air-staged combustion on the NOx emission in an opposed firing utility boiler using lean coal

Yongqiang Wang et al.

FUEL (2020)

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Article Chemistry, Physical

Detached Eddy Simulation of syngas combustion in a reverse-flow configuration

Santanu Pramanik et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

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Article Chemistry, Physical

Flameless combustion investigation of CH4/H2 in the laboratory-scaled furnace

Mehmet Salih Cellek

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

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Article Thermodynamics

New extended eddy dissipation concept model for flameless combustion in furnaces

Naiara Romero-Anton et al.

COMBUSTION AND FLAME (2020)

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Article Energy & Fuels

Effect of fuel type on the MILD combustion of syngas

Mingming Huang et al.

FUEL (2020)

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Article Energy & Fuels

High temperature air combustion (HiTAC): How it all started for applications in industrial furnaces and future prospects

Roman Weber et al.

APPLIED ENERGY (2020)

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Article Economics

Analysis of imperfect competition in natural gas supply contracts for electric power generation: A closed-loop approach

Mauricio Fernandez et al.

ENERGY ECONOMICS (2020)

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Article Thermodynamics

Experimental and numerical study on the lean premixed filtration combustion of propane/air in porous medium

Hongsheng Liu et al.

APPLIED THERMAL ENGINEERING (2019)

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Article Energy & Fuels

Numerical investigation of the effects of different injection parameters on Damkohler number in the natural gas MILD combustion

Zewu Zhang et al.

FUEL (2019)

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Article Chemistry, Physical

Design and numerical analysis of a 3 kWe flameless microturbine combustor for hydrogen fuel

Bahamin Bazooyar et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2019)

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Article Chemistry, Physical

Hydrogen enrichment of methane and syngas for MILD combustion

Amir Mardani et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2019)

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Article Engineering, Aerospace

Numerical investigation of embedding some hot obstacles in a low speed reacting flow of the moderate or intense low-oxygen dilution in a jet-in-hot-coflow

Mohammad Mansourian et al.

ACTA ASTRONAUTICA (2019)

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Article Thermodynamics

Hot-spot induced mild ignition: Numerical simulation and scaling analysis

Jeffrey Santner et al.

COMBUSTION AND FLAME (2019)

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Article Thermodynamics

Numerical study of chemical kinetics and radiation heat transfer characteristics on the temperature distribution in the oxy-fuel combustion

E. Ebrahimi Fordoei et al.

HEAT AND MASS TRANSFER (2019)

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Article Thermodynamics

DNS of MILD combustion with mixture fraction variations

Nguyen Anh Khoa Doan et al.

COMBUSTION AND FLAME (2018)

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Article Energy & Fuels

Premixed MILD Combustion of Propane in a Cylindrical Furnace with a Single Jet Burner: Combustion and Emission Characteristics

Kin-Pang Cheong et al.

ENERGY & FUELS (2018)

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Article Energy & Fuels

Numerical investigation towards HiTAC conditions in laboratory-scale ethanol spray combustion

Shanglong Zhu et al.

FUEL (2018)

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Article Energy & Fuels

Analysis of the Eddy Dissipation Concept formulation for MILD combustion modelling

Michal T. Lewandowski et al.

FUEL (2018)

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Review Thermodynamics

Modeling nitrogen chemistry in combustion

Peter Glarborg et al.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2018)

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Article Energy & Fuels

The Eddy Dissipation Concept-Analysis of Different Fine Structure Treatments for Classical Combustion

Markus Boesenhofer et al.

ENERGIES (2018)

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Review Thermodynamics

Flameless combustion and its potential towards gas turbines

Andre A. V. Perpignan et al.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2018)

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Article Energy & Fuels

Experimental and Numerical Investigation of a MILD Combustion Chamber for Micro Gas Turbine Applications

Valentina Fortunato et al.

ENERGIES (2018)

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Article Thermodynamics

Emissions of NO and CO from counterflow combustion of CH4 under MILD and oxyfuel conditions

Kin-Pang Cheong et al.

ENERGY (2017)

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Article Thermodynamics

Comprehensive numerical study of the Adelaide Jet in Hot-Coflow burner by means of RANS and detailed chemistry

Zhiyi Li et al.

ENERGY (2017)

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Article Energy & Fuels

Extension of the Eddy Dissipation Concept for turbulence/chemistry interactions to MILD combustion

Alessandro Parente et al.

FUEL (2016)

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Article Thermodynamics

Spray flame structure in conventional and hot-diluted combustion regime

Hugo Correia Rodrigues et al.

COMBUSTION AND FLAME (2015)

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Article Thermodynamics

MODELING LIFTED JET FLAMES IN A HEATED COFLOW USING AN OPTIMIZED EDDY DISSIPATION CONCEPT MODEL

M. J. Evans et al.

COMBUSTION SCIENCE AND TECHNOLOGY (2015)

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Article Thermodynamics

Effects of coflow temperature and composition on ethanol spray flames in hot-diluted coflow

H. Correia Rodrigues et al.

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW (2015)

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Article Energy & Fuels

Influences of Reactant Injection Velocities on Moderate or Intense Low-Oxygen Dilution Coal Combustion

Zhenfeng Mei et al.

ENERGY & FUELS (2014)

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Article Chemistry, Physical

Mechanisms of NO formation in MILD combustion of CH4/H-2 fuel blends

P. Li et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2014)

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Article Energy & Fuels

A Novel Methodology for Chemical Time Scale Evaluation with Detailed Chemical Reaction Kinetics

Benjamin J. Isaac et al.

ENERGY & FUELS (2013)

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Article Thermodynamics

Numerical Simulation with an Extinction Database for Use with the Eddy Dissipation Concept for Turbulent Combustion

Bjorn Lilleberg et al.

FLOW TURBULENCE AND COMBUSTION (2013)

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Article Energy & Fuels

Influence of turbulence-chemical interaction on CFD pulverized coal MILD combustion modeling

M. Vascellari et al.

FUEL (2012)

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Review Chemistry, Physical

Comprehensive H2/O2 kinetic model for high-pressure combustion

Michael P. Burke et al.

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS (2012)

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Article Thermodynamics

Role of entrainment in the stabilisation of jet-in-hot-coflow flames

E. Oldenhof et al.

COMBUSTION AND FLAME (2011)

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Article Thermodynamics

Account for variations in the H2O to CO2 molar ratio when modelling gaseous radiative heat transfer with the weighted-sum-of-grey-gases model

Robert Johansson et al.

COMBUSTION AND FLAME (2011)

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Article Thermodynamics

CFD study on influence of fuel temperature on NOx emission in a HiTAC furnace

Abbas Khoshhal et al.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2011)

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Article Engineering, Multidisciplinary

Progress and recent trend in MILD combustion

Li PengFei et al.

SCIENCE CHINA-TECHNOLOGICAL SCIENCES (2011)

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Article Energy & Fuels

New Weighted Sum of Gray Gases Model Applicable to Computational Fluid Dynamics (CFD) Modeling of Oxy-Fuel Combustion: Derivation, Validation, and Implementation

Chungen Yin et al.

ENERGY & FUELS (2010)

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Article Thermodynamics

Mathematical modeling of MILD combustion of pulverized coal

N. Schaffel et al.

COMBUSTION AND FLAME (2009)

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Article Chemistry, Physical

Effect of the combustion model and kinetic mechanism on the MILD combustion in an industrial burner fed with hydrogen enriched fuels

A. Parente et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2008)

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Article Thermodynamics

Numerical and experimental investigation of a mild combustion burner

Chiara Galletti et al.

COMBUSTION AND FLAME (2007)

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Review Chemistry, Physical

A comprehensive kinetic mechanism for CO, CH2O, and CH3OH combustion

Juan Li et al.

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS (2007)

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Article Thermodynamics

Modeling turbulent reacting jets issuing into a hot and diluted coflow

E Christo

COMBUSTION AND FLAME (2005)

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Article Thermodynamics

An optimized kinetic model of H-2/CO combustion

SG Davis et al.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2005)

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Article Chemistry, Physical

A comprehensive modeling study of hydrogen oxidation

M O Conaire et al.

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS (2004)

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Article Thermodynamics

Structure of turbulent non-premixed jet flames in a diluted hot coflow

BB Dally et al.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2002)

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Recent advances in low-gradient combustion modelling of hydrogen fuel blends

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