Abstract
The LES-ODT model is implemented for the study of twin turbulent premixed flames in decaying homogeneous isotropic turbulence. The approach is based on a coupling of large eddy simulation (LES) for mass and momentum with a fixed 3D lattice of 1D fine -grained solutions based on the one-dimensional turbulence (ODT) model. The ODT solutions for momentum and reactive scalars are designed to capture subgrid scale physics that is not captured in LES. The implementation, while limited to a simple model of turbulence in a box, illustrates the LES-ODT model capability to capture the coarse-grained (LES-based) topology and structure of the statistically planar premixed flames. The LES -ODT formulation is also capable of capturing important fine -scale processes, such as flame -flame interactions, which play an important rol e in flame shortening in turbulent premixed flames.
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