[HTML][HTML] The reactor-based perspective on finite-rate chemistry in turbulent reacting flows: A review from traditional to low-emission combustion

A Péquin, MJ Evans, A Chinnici, PR Medwell… - Applications in Energy …, 2023 - Elsevier
In flames, turbulence can either limit or enhance combustion efficiency by means of strain
and mixing. The interactions between turbulent motions and chemistry are crucial to the …

A data-driven reduced-order model for stiff chemical kinetics using dynamics-informed training

V Vijayarangan, HA Uranakara, S Barwey, RM Galassi… - Energy and AI, 2024 - Elsevier
A data-based reduced-order model (ROM) is developed to accelerate the time integration of
stiff chemically reacting systems by effectively removing the stiffness arising from a wide …

[HTML][HTML] HPC-enabling technologies for high-fidelity combustion simulations

D Mira, EJ Pérez-Sánchez, R Borrell… - Proceedings of the …, 2023 - Elsevier
With the increase in computational power in the last decade and the forthcoming Exascale
supercomputers, a new horizon in computational modelling and simulation is envisioned in …

The origin of CEMA and its relation to CSP

DA Goussis, HG Im, HN Najm, S Paolucci… - Combustion and …, 2021 - Elsevier
There currently exist two methods for analysing an explosive mode introduced by chemical
kinetics in a reacting process: the Computational Singular Perturbation (CSP) algorithm and …

PyCSP: A Python package for the analysis and simplification of chemically reacting systems based on Computational Singular Perturbation

RM Galassi - Computer Physics Communications, 2022 - Elsevier
PyCSP is a Python package for the analysis and simplification of chemically reacting
systems, using algorithms based on the Computational Singular Perturbation (CSP) theory …

An adaptive time-integration scheme for stiff chemistry based on computational singular perturbation and artificial neural networks

RM Galassi, PP Ciottoli, M Valorani, HG Im - Journal of Computational …, 2022 - Elsevier
We leverage the computational singular perturbation (CSP) theory to develop an adaptive
time-integration scheme for stiff chemistry based on a local, projection-based, reduced order …

Investigation of the turbulent flame structure and topology at different Karlovitz numbers using the tangential stretching rate index

DM Manias, EA Tingas, FEH Pérez, RM Galassi… - Combustion and …, 2019 - Elsevier
Turbulent premixed flames at high Karlovitz numbers exhibit highly complex structures in
different reactive scalar fields to the extent that the definition of the flame front in an …

Study of MILD combustion using LES and advanced analysis tools

Z Li, S Tomasch, ZX Chen, A Parente… - Proceedings of the …, 2021 - Elsevier
A cylindrical confined combustor operating under MILD condition is investigated using LES.
The combustion and its interaction with turbulence are modeled using two reactor based …

Topological and chemical characteristics of turbulent flames at mild conditions

DM Manias, EA Tingas, Y Minamoto, HG Im - Combustion and Flame, 2019 - Elsevier
Dominant physical processes that characterize the combustion of a lean methane/air
mixture, diluted with exhaust gas recirculation (EGR), under turbulent MILD premixed …

Algorithmic criteria for the validity of quasi-steady state and partial equilibrium models: the Michaelis–Menten reaction mechanism

DG Patsatzis, DA Goussis - Journal of Mathematical Biology, 2023 - Springer
We present “on the fly” algorithmic criteria for the accuracy and stability (non-stiffness) of
reduced models constructed with the quasi-steady state and partial equilibrium …