4 papers · 1 filter
Preferential and differential diffusion in RANS simulation of lean hydrogen flames with tabulated chemistry
Alex M. Garcia, Emiliano M. Fortes, Eduardo J. Pérez-Sánchez +6
Lean hydrogen flames are prone to thermo-diffusive instabilities due to preferential and differential diffusion effects, posing significant challenges for their modeling in computa…
Comprehensive linear stability analysis for intrinsic instabilities in premixed ammonia/hydrogen/air flames
Terence Lehmann, Lukas Berger, Thomas L. Howarth +4
Two-dimensional direct numerical simulations of planar laminar premixed ammonia/hydrogen/air flames are conducted for a wide range of equivalence ratios, hydrogen () fract…
Thermodiffusively unstable laminar hydrogen flame in a sufficiently large 3D computational domain -- Part I: Characteristic patterns
Wen Xu, Berger Lukas, Cai Liming +2
Thermodiffusive instabilities can have a leading order effect on flame propagation for lean premixed hydrogen flames. Many simulation studies have been performed to study this effe…
Scalar mass conservation in turbulent mixture fraction based combustion models through consistent local flow parameters
Marco Davidovic, Heinz Pitsch
Mixture fraction-based models are widely employed for predicting turbulent non-premixed combustion processes due to their cost-effectiveness and well-established subfilter closure.…