PeleLM-FDF Large Eddy Simulator of Turbulent Reactive Flows*

After its success in several computational packages, the FDF is implemented into the PeleLM [1]. This is a finite volume code suitable for numerical simulation of low-Mach number, chemically reactive flows. The resulting PeleLM-FDF software is shown to provide an efficient and very reliable means of conducting LES of turbulent combustion. This is demonstrated by its implementation for the prediction of a CO/H2 jet flame modeled with skeletal kinetics. The high level of consistency and accuracy of the new simulator is assessed via comparison with DNS results of the same flame in capturing some of the detailed statistics, including joint PDFs and the conditional averages of the reacting field.

[1] A conservative, thermodynamically consistent numerical approach for low Mach number combustion. I. Single-level integration, A. Nonaka, J. B. Bell, and M. S. Day, Combust. Theor. Model., 22 (1) 156-184 (2018)