Searched for: subject%3A%22Flamelet%255C+Generated%255C+Manifolds%22
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Vloeberghs, Victor (author)
This thesis introduces a newly-developed turbulent combustion model, as a next step towards modelling hydrogen combustion in aircraft engines. The proposed model (FGM-ESF) merges the Flamelet Generated Manifold approach's tabulated chemistry with the Eulerian Stochastic Field method's statistical treatment of flame-turbulence interactions at the...
master thesis 2024
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Bao, Hesheng (author), Akargun, Hayri Yigit (author), Roekaerts, D.J.E.M. (author), Somers, Bart (author)
In this work, an extension of the Flamelet Generated Manifold (FGM) method is developed suitable for igniting turbulent flames. To create the FGM, the strongly stretched flamelet equations (SSFE) are solved. Whereas in the standard basic method a single representative flamelet strain rate is used, in the new method a range of strain rates is...
journal article 2023
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Stoellinger, Michael (author), Roekaerts, D.J.E.M. (author)
The simple semi-empirical precursor soot model of Brookes and Moss based on the soot number density and soot mass concentration is adopted in a transported probability density function (PDF) method for turbulent diffusion flames. The gas phase chemistry is described by a flamelet generated manifold (FGM) based on the mixture fraction,...
journal article 2022
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Kumar, Neel (author)
In this thesis work, we strive to describe and apply the modelling methodology for simulating a turbulent jet diffusion flame stabilized behind a bluff body by applying flamelet generated manifold (FGM) model and steady diffusion flamelet model for predicting the pollutant emissions from the flame. The flame under consideration is a CH4/H2 (1:1)...
master thesis 2021
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Morales Ubal, Cristopher (author)
In reacting flows, detailed chemistry computations are usually avoided precomputing the thermochemical quantities as functions of a reduced set of variables such as the Flamelet Generated Manifold (FGM) approach[34]. Although it mitigates the calculations of detailed chemical mechanism, the memory requirement associated to store the lookup table...
master thesis 2021
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Nelissen, M.M. (author)
In the future, fossil fuels will be replaced by renewable sources. Hydrogen seems to be a promising energy carrier (fuel). A lot of research has been conducted on the combustion of hydrogen, but the effect of the high diffusivity of hydrogen compared to other species (differential diffusion) was often not included in simulations of turbulent...
master thesis 2021
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Ren, Mengmeng (author), Wang, Shuzhong (author), Romero-Anton, N. (author), Zhao, Junxue (author), Zou, Chong (author), Roekaerts, D.J.E.M. (author)
Eddy dissipation concept (EDC) model and flamelet generated manifolds (FGM) model are developed separately to study the temperature profiles and extinction limits of non-premixed hydrothermal flames. Predictions by the two models are evaluated comparatively by experimental data in literatures. FGM model shows relatively better prediction of...
journal article 2021
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Romero-Anton, Naiara (author), Huang, X. (author), Bao, Hesheng (author), Martin-Eskudero, Koldo (author), Salazar-Herran, Erik (author), Roekaerts, D.J.E.M. (author)
Flameless combustion, also called MILD combustion (Moderate or Intense Low Oxygen Dilution), is a technology that reduces NO<sub>x</sub> emissions and improves combustion efficiency. Appropriate turbulence-chemistry interaction models are needed to address this combustion regime via computational modelling. Following a similar analysis to...
journal article 2020
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Augusto Viviani Perpignan, A.A.V. (author), Sampat, R.P. (author), Gangoli Rao, A. (author)
The Flameless Combustion (FC) regime has been pointed out as a promising combustion technique to lower the emissions of nitrogen oxides (NOx) while maintaining low CO and soot emissions, as well as high efficiencies. However, its accurate modeling remains a challenge. The prediction of pollutant species, especially NOx, is affected by the...
journal article 2019
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Ren, M. (author), Wang, Shuzhong (author), Roekaerts, D.J.E.M. (author)
Counterflow diffusion flames of methanol hydrothermal combustion are investigated to improve the understanding of hydrothermal flames. It is indicated that the thermodynamic properties by the Peng-Robinson equation of state and the modified transport properties can reduce the flame temperature by about 500 K. The Takahashi correlation for...
journal article 2019
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Huang, X. (author)
The technique called "flameless combustion", also denoted as "MILD" combustion, was developed to reduce the nitrogen oxides (NOx) emission in the combustion process. The term "flameless" refers to the low visibility of the flame. The technique is particularly of interest when hot exhaust gas is used to preheat inlet air to high temperature. The...
doctoral thesis 2018
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Both, Ambrus (author)
The efficient and clean combustion of liquid fuels is a fundamental requirement in the design of future energy systems. Simulation plays a more and more important role in the design of such burners. In this work the spray combustion simulation approach introduced by Ma (2016) is improved, and validated against the CORIA Jet Spray Flame database ...
master thesis 2017
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Ma, L. (author), Huang, X. (author), Roekaerts, D.J.E.M. (author)
We report results of a computational study of oxy-fuel spray jet flames. An experimental database on flames of ethanol burning in a coflow of a O2–CO2 mixture, created at CORIA (Rouen, France), is used for model validation (Cléon et al., 2015). Depending on the coflow composition and velocity the flames in these experiments start at nozzle (type...
journal article 2017
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Ma, L. (author)
The objective of the research presented in this thesis is development and validation of predictive models or modeling approaches of liquid fuel combustion (spray combustion) in hot-diluted environments, known as flameless combustion or MILD combustion. The goal is to combine good physical insight, appropriate numerical methods and good software...
doctoral thesis 2016
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Jamali, S.H. (author)
The phenomenon of turbulent spray combustion occurs in all industrial furnaces that consume liquid fuels. It is essential that a furnace is capable to have high efficiency and performance while the pollutant emissions meet the stricter national and international regulations. One of the recently proposed solutions to improve the aforementioned...
master thesis 2014
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Bastiaans, R.J.M. (author), Van Oijen, J.A. (author), De Goey, L.P.H. (author)
In this paper recent developments in the application of the method of flamelet generated manifolds (FGM) to simulations of turbulent premixed combustion are considered. Initially the method was developed for kinetic reduction for simulations of laminar combustion using stationary solvers. Recently the method was extended to direct numerical...
conference paper 2006
Searched for: subject%3A%22Flamelet%255C+Generated%255C+Manifolds%22
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