Flows through a tetrahedron frame and a double H permeable frame in a smooth channel are simulated using an open source CFD soft Fluidity.Results of the numerical simulation are that the permeable frame may reduce the eddy viscosity which is helpful to the flow turbulent motion and the energy dissipation,induce sediment deposition in a sediment laden flow by changing the flow direction and increase the energy dissipation.The double H permeable frame can retard local flow velocities and enhance sediment deposition and new land creation better.