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 …

State-of-the-art modeling of two-stage auto-ignition: Turbulence, evaporation and chemistry effects

Y Zhang, Q Peng, C Wang, Y Huang, P Zhou… - Energy Conversion and …, 2023 - Elsevier
Internal combustion engines are the dominant power sources in transport, accounting for
significant amounts of fuel consumption and pollutant emissions. Low-temperature …

Assessment of numerical accuracy and parallel performance of OpenFOAM and its reacting flow extension EBIdnsFoam

T Zirwes, M Sontheimer, F Zhang, A Abdelsamie… - Flow, Turbulence and …, 2023 - Springer
OpenFOAM is one of the most widely used open-source computational fluid dynamics tools
and often employed for chemical engineering applications. However, there is no systematic …

Quasi-DNS dataset of a piloted flame with inhomogeneous inlet conditions

T Zirwes, F Zhang, P Habisreuther, M Hansinger… - Flow, Turbulence and …, 2020 - Springer
A quasi-DNS of the partially premixed turbulent Sydney flame in configuration FJ200-5GP-
Lr75-57 has been conducted using detailed molecular diffusion for multi-component …

A dedicated reduced kinetic model for ammonia/dimethyl-ether turbulent premixed flames

W Guan, A Abdelsamie, C Chi, Z He, D Thévenin - Combustion and Flame, 2023 - Elsevier
Ammonia (NH 3) as a promising energy vector receives growing interest to reduce carbon
emissions in combustion applications. Co-firing with dimethyl ether (DME) is an outstanding …

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 …

DNS study on reactivity stratification with prechamber H2/air turbulent jet flame to enhance NH3/air combustion in gas engines

C Chi, D Thévenin - Fuel, 2023 - Elsevier
The present study investigates turbulent flame dynamics and pollutant emission
characteristics in a prechamber/main chamber system. AH 2/air turbulent jet flame issued …

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 …

Influence of molecular transport on burning rate and conditioned species concentrations in highly turbulent premixed flames

HC Lee, P Dai, M Wan, AN Lipatnikov - Journal of Fluid Mechanics, 2021 - cambridge.org
Apparent inconsistency between (i) experimental and direct numerical simulation (DNS)
data that show the significant influence of differential diffusion on the turbulent burning rate …

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

A Abdelsamie, G Lartigue, CE Frouzakis, D Thévenin - 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 …