Modeling and Simulation of a H2/O2 Diffusion Flame under Cryogenic Condition using a Consistent Flamelet Formulation

Modeling of combustion phenomena under supercritical/transcritical conditions has recently gained growing attentions with the increasing applications of high-pressure combustion and energy devices.~ Under such thermodynamic conditions combustion dynamics and flame characteristics are strongly impacted by the peculiar thermo-diffusive transport properties and the nonlinear equation-of-state relation. In this study, we first illustrate the those affects through a flamelet study in which the comprehensive and consistent flamelet model is compared against the commonly used flamelet model formulation. Then the consistent flamelet model is employed to the LES of a GH2/LOx cryogenic flame based upon a newly developed computational framework. The simulation results will be extensively discussed and compared qualitatively with the experimental measurements by Candel et al. (2006).~