Effect of numerical approaches for flamelet table integration on flamelet modeling of a turbulent jet flame and a self-excited resonance combustor

摘要

In advanced modeling and simulations of turbulent combustion, the accuracy of model predictions is affected by model errors as well as numerical errors that are caused by the numerical implementation of models in simulation programs. In this work, we are mainly concerned with the effect of numerical approaches on model predictions of turbulent combustion. Particularly, we employ the flamelet/progress variable (FPV) model and examine the effect of various numerical approaches for the flamelet table integration on the modeling results. In a recent work (Han and Wang [1]), three different table integration approaches by employing different integration strategies are examined in detail. The fundamental differences of the different approaches are compared and the effect of the approaches on the modeling of partially stirred reactors is thoroughly investigated. In this work, the examination of the different table integration approaches is extended to the FPV modeling of two real flames, a laboratory-scale turbulent free jet flame and a self-excited resonance model rocket combustor, to further examine the effect of the different table integration approaches in realistic combustion problems.