TY - JOUR
TI - LES-CMS simulations of a turbulent lifted hydrogen flame in vitiated co-flow
AU - Stanković Ivana
AU - Merci Bart
JN - Thermal Science
PY - 2013
VL - 17
IS - 3
SP - 763
EP - 772
PT - Article
AB - Results from a study of turbulent lifted jet flame with Conditional Moment  Closure (CMC) turbulent combustion model are reported. First, a qualitative  description of the simulation results is given, by examining the  instantaneous resolved species mass fraction fields. The structure of the  lifted flame is also assessed by comparing the measured temperature and  species mass fraction profiles and the simulation results. The model is able  to capture the axial and radial profiles of mixture fraction, temperature and  major species. The sensitivity of prediction to boundary conditions is also  explored and the lift-off height is found to be very sensitive to the co-flow  temperature. Finally, the stabilisation mechanisms, auto-ignition or premixed  flame propagation, are addressed. No evidence of premixed flame propagation  is found: the diffusion in physical space is negligible for all studied  conditions.