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Unsaturated subsoil erosion protection in turbulent flow conditions

Author(s): M. Davis; H.J. Köhler; M.A. Koenders

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Abstract: Flow is considered over an obstacle placed on a coarse gravel layer that covers a sand layer. The pressure distribution as a function of position and time is obtained for partially saturated conditions in the subsoil. The flow in the open water and coarse layer is calculated using a lattice Boltzmann technique; the pressure in the subsoil is evaluated by means of an analytical solution using the lattice Boltzmann simulation as boundary condition. The results demonstrate where the greatest risk of damage to the subsoil may be located.


Year: 2006

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