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Tabulated Chemistry Approach for the Simulation of MILD Combustion: Effects of Scalar Mixing and Chemistry Tabulation. [PDF]

ACS Omega, 2023
MILD (moderate and intense low-oxygen dilution) combustion is a highly promising technology to deliver clean and efficient thermal energy. However, because of its unconventional reaction nature, the optimization of the MILD combustion in various industrial burners is still challenging, for which the design tool based on accurate and cost-effective ...
Hu Y, Jiang Y, Cheong KP.
europepmc   +3 more sources

Tabulated Chemistry Models for Numerical Simulation of Combustion Flow Field

Fluids
In numerical simulations of combustion flow fields, tabulated chemistry models are widely used to reduce computational cost compared to rigorous reaction calculation methods such as detailed chemical reaction calculations.
Masaya Muto
doaj   +2 more sources

Physics informed machine learning for chemistry tabulation

Journal of Computational Science, 2023
Modeling of turbulent combustion system requires modeling the underlying chemistry and the turbulent flow. Solving both systems simultaneously is computationally prohibitive. Instead, given the difference in scales at which the two sub-systems evolve, the two sub-systems are typically (re)solved separately.
Amol Salunkhe, Dwyer Deighan, Paul E. DesJardin, Varun Chandola   +3 more
openaire   +2 more sources

Filtered Tabulated Chemistry for non-premixed flames [PDF]

Proceedings of the Combustion Institute, 2015
The objective of the present study is to design a modeling strategy for LES of laminar diffusion flame regimes, i.e. without SGS wrinkling. A non-premixed model dedicated to capture unresolved laminar flame structure is then proposed. For that purpose, the Filtered Tabulated Chemistry for Large Eddy Simulation is adapted to diffusion flames. A filtered
Coussement, Axel, Schmitt, Thomas, Fiorina, Benoît   +2 more
openaire   +2 more sources

A Tabulated Chemistry Multi-Zone Combustion Model of HCCI Engines Supplied with Pure Fuel and Fuel Blends

Energies, 2022
Homogeneous charge compression ignition is considered a promising solution to face the increasing regulations imposed by the legislator in the transport sector, thanks to pollutant and CO2 emissions reduction. In this work, a quasi-dimensional multi-zone
Vincenzo De Bellis, Enrica Malfi, Alfredo Lanotte, Massimiliano De Felice, Luigi Teodosio, Fabio Bozza   +5 more
doaj   +1 more source

Generalizing progress variable definition in CFD simulation of combustion systems using tabulated chemistry models

Applications in Energy and Combustion Science, 2023
In the Computational Fluid Dynamics (CFD) simulation of advanced combustion systems, the chemical kinetics must be examined in detail to predict the emissions and performance characteristics accurately.
Pourya Rahnama, Amin Maghbouli, Hesheng Bao, Aromal Vasavan, Ricardo Novella, Bart Somers   +5 more
doaj   +1 more source

Implementation and evaluation of updated photolysis rates in the EMEP MSC-W chemistry-transport model using Cloud-J v7.3e [PDF]

Geoscientific Model Development, 2023
The present work describes the implementation of the state of the art Cloud-J v7.3 photolysis rate calculation code in the EMEP MSC-W chemistry-transport model.
W. E. van Caspel, D. Simpson, D. Simpson, J. E. Jonson, A. M. K. Benedictow, Y. Ge, A. di Sarra, G. Pace, M. Vieno, H. L. Walker, H. L. Walker, H. L. Walker, M. R. Heal   +12 more
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Reduced description of reactive flows with tabulation of chemistry [PDF]

Combustion Theory and Modelling, 2011
The direct use of large chemical mechanisms in multi-dimensional Computational Fluid Dynamics (CFD) is computationally expensive due to the large number of chemical species and the wide range of chemical time scales involved. To meet this challenge, a reduced description of reactive flows in combination with chemistry tabulation is proposed to ...
Zhuyin Ren, Graham M. Goldin, Varun Hiremath, Stephen B. Pope   +3 more
openaire   +1 more source

Numerical Prediction of Turbulent Spray Flame Characteristics Using the Filtered Eulerian Stochastic Field Approach Coupled to Tabulated Chemistry

Fluids, 2021
The Eulerian stochastic fields (ESF) method, which is based on the transport equation of the joint subgrid scalar probability density function, is applied to Large Eddy Simulation of a turbulent dilute spray flame.
Louis Dressler, Fernando Luiz Sacomano Filho, Florian Ries, Hendrik Nicolai, Johannes Janicka, Amsini Sadiki   +5 more
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Implementation of the Scalar Dissipation Rate in the REDIM Concept and its Validation for the Piloted Non-Premixed Turbulent Jet Flames

Eurasian Chemico-Technological Journal, 2021
In order to address the impact of the concentration gradients on the chemistry – turbulence interaction in turbulent flames, the REDIM reduced chemistry is constructed incorporating the scalar dissipation rate, which is a key quantity describing the ...
Chunkan Yu, U. Maas
doaj   +1 more source