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The partially filled pipeflows encountered in drainage systems belong to a family of unsteady flow problems capable of numerical solution via the method of characteristics.The defining equations in terms of flow depth,velocity and surface wave speed are developed and numerically solved by characteristic-difference method with time-lineinterpolation scheme.Boundary conditions for inflow,outflow,moving hydraulic jump and junctions are developed both experimentally and numerically.Full scale model experiments were carried out and it was consequently clarified that numerical model is capable of predicting flow characteristics in realistic drainage networks.
The partially filled pipeflows encountered in drainage systems belong to a family of unsteady flow problems capable of numerical solution via the method of characteristics. Defining factors in terms of flow depth, velocity and surface wave speed are developed and numerically solved by characteristic-difference method with time-lineinterpolation scheme.Boundary conditions for inflow, outflow, moving hydraulic jump and junctions are both experimentally and numerically. Full scale model experiments were carried out and it was filtered clarification that numerical model is capable of predicting flow characteristics in realistic drainage networks .