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Computation of Entropy Production in Stratified Flames Based on Chemistry Tabulation and an Eulerian Transported Probability Density Function Approach [PDF]

open access: yesEntropy, 2022
This contribution presents a straightforward strategy to investigate the entropy production in stratified premixed flames. The modeling approach is grounded on a chemistry tabulation strategy, large eddy simulation, and the Eulerian stochastic field ...
Louis Dressler   +4 more
doaj   +2 more sources

Implementation of the Semi Empirical Kinetic Soot Model Within Chemistry Tabulation Framework for Efficient Emissions Predictions in Diesel Engines [PDF]

open access: yesOpen Physics, 2019
Soot prediction for diesel engines is a very important aspect of internal combustion engine emissions research, especially nowadays with very strict emission norms. Computational Fluid Dynamics (CFD) is often used in this research and optimisation of CFD
Tvrdojevic Mijo   +6 more
doaj   +2 more sources

Combining flamelet-generated manifold and machine learning models in simulation of a non-premixed diffusion flame

open access: yesEnergy and AI, 2023
Flamelet Generated Manifold (FGM) is an example of a chemistry tabulation or a flamelet method that is under attention because of its accuracy and speed in predicting combustion characteristics.
Kaimeng Li   +3 more
doaj   +3 more sources

Flamelet generated manifold simulation of highly swirling spray combustion: Adoption of a mixed homogeneous reactor and inclusion of liquid-flame heat transfer

open access: yesAIP Advances, 2022
We undertake the modeling of the combustion of highly swirling fuel sprays using the Flamelet-Generated-Manifold (FGM) combustion-chemistry-reduction technique, especially the use of adiabatic tables generated with non-premixed chemical reactors ...
A. V. Brito Lopes   +2 more
doaj   +2 more sources

Predictions of NO and CO emissions in ammonia/methane/air combustion by LES using a non-adiabatic flamelet generated manifold [PDF]

open access: yesEnergy, 2019
A large-eddy simulation (LES) employing a non-adiabatic flamelet generated manifold approach, which can account for the effects of heat losses due to radiation and cold walls, is applied to NH3/CH4/air combustion fields generated by a swirl burner, and ...
Takafumi Honzawa   +2 more
exaly   +4 more sources

Flamelet generated manifolds for lean premixed turbulent hydrogen flames [PDF]

open access: yesProceedings of the Combustion Institute
Hydrogen is relatively simple to produce from renewable electricity, a clean energy carrier and a carbon-free alternative fuel. Therefore, the interest in developing models that can predict hydrogen combustion is continuously increasing.
Sanchez Bahoque, Gabriela   +1 more
core   +2 more sources

Incorporating unsteady flow-field effects in flamelet-generated manifolds [PDF]

open access: yes, 2009
In general, simulating combustion can be a very costly job. This is caused by the large number of chemical reacting species that are strongly coupled. Moreover, all the (chemical) time-scales that are present, span a multitude of orders, which results in
Delhaye, S.
core   +7 more sources

Development of flamelet generated manifolds for partially-premixed flame simulations [PDF]

open access: yes, 2011
Accuracy of simulations of combustion processes does not only depend on a meticulous description of the turbulent flow field, its accuracy and detail depends on the representation of combustion chemistry and its interaction with turbulence as well ...
Ramaekers, W.J.S.
core   +2 more sources

Application of dense neural networks for manifold-based modeling of flame-wall interactions

open access: yesApplications in Energy and Combustion Science, 2023
Artifical neural networks (ANNs) are universal approximators capable of learning any correlation between arbitrary input data with corresponding outputs, which can also be exploited to represent a low-dimensional chemistry manifold in the field of ...
Julian Bissantz   +7 more
doaj   +1 more source

Numerical Simulations of Heat Loss Effect on Premixed Jet Flame Using Flamelet Generated Manifold Combustion Model

open access: yesEnergies, 2022
Numerical simulations are performed on a combustor setup which represents the recirculating behaviour of a combustor in the flameless combustion regime. Previous experimental and numerical studies showed that heat loss is prominent for this setup.
Jesse W. Hofsteenge   +2 more
doaj   +1 more source

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