Abstract

The Conditional Moment Closure (CMC) is a turbulent combustion model that was proposed just over a decade ago. Because of the highly non-linear properties of the reaction rates, the mean source term for chemical transport equations cannot be approximated by the value of the source term at the mean condition; CMC uses conditional expectations to overcome this. It also has the capability to successfully predict results for a wide range of flow situations. While it has been tested for simplified flow configurations and implemented in its full formulation, the primary hypothesis used in deriving the equation - that processes in conserved scalar space are similar to a Markov process - has not previously been directly tested. We present results from Direct Numerical Simulations (DNS) for homogeneous isotropic turbulence that verify this claim.

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