A two-way coupled simulation technique for a dilute suspension of rigid fibers in turbulent flows is developed. It is based on an Eulerian direct numerical simulation of the incompressible Navier-Stokes equations and a Lagrangian direct Monte-Carlo simulation of the fiber conformation. The developed simulation tool is employed to study the turbulent drag reduction by rigid fibers in a channel flow. Turbulence statistics of the fibrous drag-reduced channel flow obtained by a direct method, not needing a closure model, is presented for the first time.
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A two-way coupled simulation technique for a dilute suspension of rigid fibers in turbulent flows is developed. It is based on an Eulerian direct numerical simulation of the incompressible Navier-Stokes equations and a Lagrangian direct Monte-Carlo simulation of the fiber conformation. The developed simulation tool is employed to study the turbulent drag reduction by rigid fibers in a channel flow. Turbulence statistics of the fibrous drag-reduced channel flow obtained by a direct method, not ne...
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