The work introduces a BGK-like closure for the collision-covariance source term using the subgrid equilibrium residual and a phenomenological turbulent relaxation frequency, validated in lattice Boltzmann simulations against Smagorinsky.
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Kinetic closure of turbulence: collision-side modeling beyond the filtered BGK--Boltzmann equation
The work introduces a BGK-like closure for the collision-covariance source term using the subgrid equilibrium residual and a phenomenological turbulent relaxation frequency, validated in lattice Boltzmann simulations against Smagorinsky.