Simulation of Sandia Flame D Using Velocity-Scalar Filtered Density Function

Abstract

The joint velocity―scalar filtered mass density function methodology is employed for large eddy simulation of Sandia National Laboratories' flame D. This is a turbulent piloted nonpremixed methane jet flame. In velocity―scalar filtered mass density function, the effects of the subgrid-scale chemical reaction and convection appear in closed forms. The modeled transport equation for the velocity―scalar filtered mass density function is solved by a hybrid finite difference/Monte Carlo scheme. For this flame, which exhibits little local extinction, a flamelet model is employed to relate the instantaneous composition to mixture fraction. The simulated results are assessed via comparison with laboratory data and show favorable agreements.