Turbulent Combustion and Fire Radiation Modelling

A special issue of Fire (ISSN 2571-6255). This special issue belongs to the section "Mathematical Modelling and Numerical Simulation of Combustion and Fire".

Deadline for manuscript submissions: 28 January 2025 | Viewed by 980

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, School of Engineering, Computing and the Environment, Kingston University London, Friars Avenue, Roehampton Vale, London, UK
Interests: autoignition and minimum ignition energy of hydrocarbons and hydrogen; ignition of mixed fuels; RANS and LES of reacting flows and experimental combustion; combustion studies using OpenFOAM solver; combustion in spark ignition engines; deflagration to detonation and explosion; flame dynamics and instabilities; gas turbine combustion; hydrogen and high-pressure combustion; micro-combustion; sustainable fuels; thermoacoustic oscillations on turbulent flame development; latest advancements in combustion; accidental; basement; forest and pool fires; theoretical and simulation of fire modelling; radiant heat modelling

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Guest Editor
Institut für Technische Verbrennung, Leibniz Universität Hannover, An der Universität 1—Gebäude 8141, 30823 Garbsen, Germany
Interests: combustion of fuel/air mixtures; experimental combustion and numerical modeling; turbulent premixed and partially premixed combustion; ignition processes; RANS and LES of reacting flows and experimental combustion; combustion in internal combustion engines; diesel and gas engine combustion; pre-chamber ignition; spray formation; emission formation; turbulent flame stability; flashback limits; flame extinction limits; flame-wall interaction; gas turbine combustion; high pressure combustion; hydrogen combustion; ammonia combustion; sustainable fuel combustion

Special Issue Information

Dear Colleagues,

We are delighted to extend an invitation for submissions to this Special Issue of Fire, aiming to attract a range of topics relating to fire and combustion. It gives the opportunity to present new developments and thereby share ideas with the wider community in these areas, encompassing, but not limited to, turbulent combustion modelling, large-eddy simulations, hybrid RANS/LES, gas turbine combustion, auto-ignition, minimum ignition energy, experimental combustion techniques, aerodynamic flows, flame–wall interactions, turbomachinery flows, complex combustion geometries using both general purpose CFD codes and OpenFOAM, combustion simulation of multi-phase flows, etc. 

It creates a platform for numerical combustion researchers to exchange insights into fundamental research on fire and practical applications. It covers fire modelling using CFD, focusing on pool and jet fires, as well as fire protection and suppression techniques involving water systems, basement fire simulation, thermal radiation heat transfer and glass behaviour under fire conditions. The Special Issue will feature papers on fire behaviour modelling, risk assessment, wildfire management and firefighting technologies. The submissions should be sources, exploring new data products and discussing the best practices for fire modelling and validation. This Special Issue serves as a valuable platform for advancing understanding and enhancing capabilities in fire modelling, risk assessment and mitigation efforts. Other related topics not mentioned above may be considered at the editor's discretion.

Dr. Siva Prasad Reddy Muppala
Prof. Dr. Friedrich Dinkelacker
Guest Editors

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fire is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • autoignition and minimum ignition energy
  • CFD and experimental combustion
  • combustion in spark ignition engines
  • expanding spherical flames
  • hydrogen and high-pressure combustion
  • large-eddy simulation of reacting flows
  • pollutant formation
  • thermoacoustic oscillations on turbulent flame development
  • theoretical and numerical modelling of combustion
  • turbulent premixed flames
  • turbulent flame structure and propagation
  • accidental, basement, forest and pool fires
  • theoretical and simulation of fire modelling
  • radiant heat modelling

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Published Papers (1 paper)

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Research

20 pages, 5286 KiB  
Article
RANS Simulation of Minimum Ignition Energy of Stoichiometric and Leaner CH4/Air Mixtures at Higher Pressures in Quiescent Conditions
by Sooraj Paleli Vasudevan and Siva P. R. Muppala
Fire 2024, 7(10), 366; https://doi.org/10.3390/fire7100366 - 15 Oct 2024
Viewed by 721
Abstract
Minimum ignition energy (MIE) has been extensively studied via experiments and simulations. However, our literature review reveals little quantitative consistency, with results varying from 0.324 to 1.349 mJ for ϕ = 1.0 and from 0.22 to 0.944 mJ for ϕ = 0.9. Therefore, [...] Read more.
Minimum ignition energy (MIE) has been extensively studied via experiments and simulations. However, our literature review reveals little quantitative consistency, with results varying from 0.324 to 1.349 mJ for ϕ = 1.0 and from 0.22 to 0.944 mJ for ϕ = 0.9. Therefore, there is a need to resolve these discrepancies. This RANS study aims to partially address this knowledge gap. Additionally, it presents other flame evolution parameters essential for robust combustion design. Using the reactingFOAM solver, we predict the threshold energy required to ignite the fuel mixture. For this, the single step using the Arrhenius law is selected to model ignition in the flame kernel of stochiometric and lean CH4/air mixtures, allowing it to develop into a self-sustained flame. The ignition power density, an energy quantity normalised with volume, is incrementally varied, keeping the kernel critical radius rs constant at 0.5 mm in the quiescent mixture of two equivalence ratios ϕ 0.9 and 1.0, for varied operating pressures of 1, 5, and 10 bar at the constant initial temperature of 300 K. The minimum ignition energy is validated with twelve independent 1-bar datasets both numerically and experimentally. The effect of pressure on MIEs, which diminish as pressure rises, is significant. At ϕ = 1.0 (and 0.9), the flame temperature reached 481.24 K (457.803 K) at 1 bar, 443.176 K (427.356 K) at 5 bar, and 385.56 K (382.688 K) at 10 bar. The minimum ignition energy was validated using twelve independent 1-bar datasets from both numerical simulations and experiments. The results show strong agreement with many experimental findings. Finally, a mathematical formulation of MIE is devised; a function of pressure and equivalence ratio shows a slightly curved relationship. Full article
(This article belongs to the Special Issue Turbulent Combustion and Fire Radiation Modelling)
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