Counterflow diffusion flames of general fluids: Oxygen/hydrogen mixtures

Ribert, Guillaume; Zong, Nan; Yang, Vigor; Pons, Laetitia; Darabiha, Nasser; Candel, Sébastien

doi:10.1016/j.combustflame.2008.04.023

Cited by 142 publications

(105 citation statements)

References 43 publications

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“…The index r indicates reduced quantities. Model uncertainties may arise when the reduced temperature of the mixture is smaller than unity [12]:…”

Section: Transport Propertiesmentioning

confidence: 99%

“…Ribert et al [12] already observed that the in §uence of thermal di¨usion is slightly enhanced on the oxygen rich side since hydrogen reacts rapidly with other species. This observation is also re §ected in Fig.…”

Section: In §Uence Of Thermal Di¨usion and Pressurementioning

confidence: 99%

“…The in §uence of applying di¨erent detailed reaction mechanisms was tested by Ribert et al [12]. As the results were found to be almost identical for all applied mechanisms, only the ‚ O Conaire mechanism is considered here.…”

Section: Structures Of Counter §Ow Di¨usion Flamesmentioning

confidence: 99%

“…The e¨ects of the reduction of the free volume by the particular volume of the molecules is taken into account by b = 0.077796RT c /p c . For the critical points of all substances, the values published by Ribert et al [12] have been applied. They are summarized in Table 1.…”

Section: Thermodynamic Properties and Equation Of Statementioning

confidence: 99%

“…A modi¦ed SoaveRedlichKwong EOS and consistent real gas thermodynamics were also used by Ribert et al [12] who studied counter §ow di¨usion §ames in the physical space over the entire regime of thermodynamic states. Signi¦cant real gas e¨ects due to steep property variations were found in the transcritical regime.…”

Section: Introductionmentioning

confidence: 99%

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Real gas CFD simulations of hydrogen/oxygen supercritical combustion

Pohl

Jarczyk

Pfitzner

et al. 2013

Progress in Propulsion Physics

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A comprehensive numerical framework has been established to simulate reacting §ows under conditions typically encountered in rocket combustion chambers. The model implemented into the commercial CFD Code ANSYS CFX includes appropriate real gas relations based on the volume-corrected PengRobinson (PR) equation of state (EOS) for the §ow ¦eld and a real gas extension of the laminar §amelet combustion model. The results indicate that the real gas relations have a considerably larger impact on the §ow ¦eld than on the detailed §ame structure. Generally, a realistic §ame shape could be achieved for the real gas approach compared to experimental data from the Mascotte test rig V03 operated at ONERA when the di¨erential di¨usion processes were only considered within the §ame zone.

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“…The index r indicates reduced quantities. Model uncertainties may arise when the reduced temperature of the mixture is smaller than unity [12]:…”

Section: Transport Propertiesmentioning

confidence: 99%

Section: In §Uence Of Thermal Di¨usion and Pressurementioning

confidence: 99%

Section: Structures Of Counter §Ow Di¨usion Flamesmentioning

confidence: 99%

Section: Thermodynamic Properties and Equation Of Statementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Real gas CFD simulations of hydrogen/oxygen supercritical combustion

Pohl

Jarczyk

Pfitzner

et al. 2013

Progress in Propulsion Physics

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Hydrogen Combustion and Emissions in a Sustainable Energy Future

Briones¹

2010

Handbook of Combustion

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The global energy landscape is undergoing a transformation driven by rising energy demand, diminishing fossil fuel supplies, deregulation of energy industry, and growing concern about climate change. While fossil fuels will continue to play a dominant role in meeting the current and future energy needs, there is worldwide interest in developing renewable and alternative energy sources to meet the growing energy demand and address concerns about the emission of greenhouse gases and hazardous pollutants. In this context, hydrogen is viewed as a viable renewable energy carrier due to its abundant supply, superior emission characteristics, and flexibility in harnessing its energy through a variety of technologies. There are, however, many technological and scientific issues pertaining to its production, storage, and utilization. This chapter provides an overview of such issues and discusses research dealing with hydrogen combustion and emissions in the context of sustainable energy future. Studies concerning laminar flames, including non‐premixed, premixed, and partially premixed flames in various configurations, and also those dealing with ignition and extinction phenomena, are reviewed. High‐pressure phenomena including explosions/ignition limits are discussed, and an overview of detonation and turbulent combustion is provided. Issues pertaining to hydrogen combustion and emissions in practical systems are also discussed. Further technological advances and fundamental research needed for hydrogen to play a major role in the sustainable energy future are identified.

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Numerical study of hydrogen effects on pressurized methane‐oxy combustion in counter‐flow diffusion flame

Park

Kim

Lee

2021

Intl J of Energy Research

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Hydrogen, a renewable energy source, is attracting interest because it does not emit the greenhouse gases and air pollutants generated by the use of fossil fuels. This study aims to analyze the effects of a hydrogen blend on pressurized oxy-fuel combustion (POFC) to support hydrogen infrastructure and reduce greenhouse gas emissions. A counter-flow diffusion flame model was used to analyze the characteristics of POFC. Purified and unpurified natural gas and

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Counterflow diffusion flames of general fluids: Oxygen/hydrogen mixtures

Cited by 142 publications

References 43 publications

Real gas CFD simulations of hydrogen/oxygen supercritical combustion

Real gas CFD simulations of hydrogen/oxygen supercritical combustion

Hydrogen Combustion and Emissions in a Sustainable Energy Future

Numerical study of hydrogen effects on pressurized methane‐oxy combustion in counter‐flow diffusion flame

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