DADOREN: Direct numerical simulations And Data-driven analysis Of ignition and combustion in Realistic pre-chamber/ Engine systems with NH3/H2 blend fuel

• Applicant: Professor Dr. Dominique Thévenin
• Subject Area: Fluid Mechanics ; Energy Process Engineering
• Term: since 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 512043261

To facilitate carbon-free and low emission combustion in practical engine systems, this project investigates the transient ignition and turbulent combustion process in a realistic pre-chamber/engine geometry with NH3/H2 blend fuel. Direct numerical simulations (DNS) are carried out for this system with exascale computation on Supercomputers, generating a vast amount of high-fidelity data. Machine learning techniques are applied to accelerate the chemical kinetic computation in DNS. The realistic geometry is represented by the immersed boundary method. Data-driven analysis is done to investigate in detail the ignition characteristics and the multi-scale features of the turbulent flames. NOx emissions are also investigated. A better understanding of the practical pre-chamber/engine system using NH3/H2 fuel should be finally obtained, which would be useful for both fundamental academic research and practical applications.

• DFG Programme: Research Grants