Thickened Flame Model Developments for Ignition and H2 Applications

PRESENTED BY:

Olivier Colin, Research Engineer
IFP Energies nouvelles
Cédric Mehl, Research Engineer
IFP Energies nouvelles

Many industrial systems, including internal combustion engines and gas turbines, depend on turbulent premixed combustion processes. In such systems, premixed flames are characterized by a thickness far smaller than the finest feasible numerical cell size. The Thickened Flame Model (TFM) addresses this challenge by artificially thickening the flame front, allowing for precise flame resolution on the computational mesh. However, this thickening alters the flame’s physical behavior, necessitating models to accurately predict key phenomena, such as turbulent flame propagation speed and pollutant formation.

This webinar will highlight the latest advancements in TFM research at IFPEN. Key topics will include: (i) an introduction to the TFM-AMR model, which integrates TFM with Adaptive Mesh Refinement (AMR); (ii) the latest spark ignition and spontaneous ignition developments via the TFM-AMR-I model, providing a high-fidelity representation of ignition processes; and (iii) the extension of TFM to hydrogen combustion, in particular the development of a correction to recover the thickened flame sensitivity to stretch and a model to take into account the sub-grid contribution of thermo-diffusive instabilities. Various applications will be discussed, ranging from gas turbines to industrial safety.