Recent developments in DNS of turbulent combustion

P Domingo, L Vervisch - Proceedings of the Combustion Institute, 2023 - Elsevier
The simulation of turbulent flames fully resolving the smallest flow scales and the thinnest
reaction zones goes along with specific requirements, which are discussed from …

On-the-fly artificial neural network for chemical kinetics in direct numerical simulations of premixed combustion

C Chi, G Janiga, D Thévenin - Combustion and Flame, 2021 - Elsevier
In this study, an on-the-fly artificial neural network (ANN) framework has been developed for
the tabulation of chemical reaction terms in direct numerical simulations (DNS) of premixed …

A directional ghost-cell immersed boundary method for low Mach number reacting flows with interphase heat and mass transfer

Z Ou, C Chi, L Guo, D Thévenin - Journal of Computational Physics, 2022 - Elsevier
This paper presents a directional ghost-cell immersed boundary method for low Mach
number reacting flows with general boundary conditions, extending the approach described …

The Taylor–Green vortex as a benchmark for high-fidelity combustion simulations using low-Mach solvers

A Abdelsamie, G Lartigue, CE Frouzakis, D Thevenin - Computers & Fluids, 2021 - Elsevier
Verification and validation are crucial steps for the development of any numerical model.
While suitable processes have been established for commercial Computational Fluid …

Effects of molecular diffusion modeling on turbulent premixed NH3/H2/air flames

C Chi, W Han, D Thévenin - Proceedings of the Combustion Institute, 2023 - Elsevier
Ammonia (NH 3) is a promising carbon-free energy carrier and can be used as a fuel in gas
turbines for power generation. Using a blend of NH 3 and hydrogen (H 2) has the potential …

Effects of electrodes and imposed flow on forced ignition in laminar premixed hydrogen/air mixtures with large Lewis number

X Chen, S Xie, H Böttler, A Scholtissek, W Han… - Proceedings of the …, 2023 - Elsevier
Compared to quiescent premixed reactants, forced ignition of flowing/turbulent premixed
reactants is expected to be more difficult because of increased dissipation of the deposited …

Nanoparticle formation and behavior in turbulent spray flames investigated by DNS

A Abdelsamie, FE Kruis, H Wiggers… - Flow, Turbulence and …, 2020 - Springer
This work is a first direct numerical simulation of a configuration closely related to the
SpraySyn burner (Schneider et al. in Rev Sci Instrum 90: 085108, 2019). This burner has …

Hot-spot induced mild ignition: Numerical simulation and scaling analysis

J Santner, SS Goldsborough - Combustion and Flame, 2019 - Elsevier
Mild ignition is a 'non-ideal'autoignition process observed at some conditions in rapid
compression machine, shock tube and flow reactor experiments where flames and/or …

Direct numerical simulation of turbulent spray combustion in the SpraySyn burner: impact of injector geometry

A Abdelsamie, C Chi, M Nanjaiah… - Flow, Turbulence and …, 2021 - Springer
Spray combustion is one of the most important applications connected to modern
combustion systems. Direct numerical simulations (DNS) of such multiphase flows are …

AI-driven DfAM of aeronautical hydrogen gas turbine combustors

A Boretti, A Huang - International Journal of Hydrogen Energy, 2024 - Elsevier
The increasing demand for sustainable aviation solutions has intensified the development of
hydrogen-fueled gas turbine combustors, necessitating advanced manufacturing techniques …