A Dynamic Model for the Turbulent Burning Velocity for Premixed Combustion LES

A somewhat limited number of computationally tractable methods of simulating turbulent premixed combustion currently exist. Most of these methods either directly or indirectly require information about how fast flames propagate in turbulent flow fields. In this work a dynamic model for describing turbulent burning velocities in the context of large eddy simulation (LES) is presented. This model uses a surface filtering procedure that is consistent with standard LES filtering, and that additionally only uses information that comes directly from the flame front. As such, it is consistent with level set methods, where arbitrary constraints can be imposed on the level set field variable away from the flame front. Brief results showing model validation in the context of direct numerical simulation (DNS) are presented.