Study of tidal flow numerical simulation under the influence of the pile group

A method of numerical and physical model complementing each other was applied in this paper, in which the formulae of the resistance coefficient for the single pile and group pile have been obtained through a series of experiments of physical models, then putting it in the studies of numerical model. It overcomes the shortcoming that used to be very difficult to consider the resistance of pile foundation when previewing the scheme of wharf engineering by the numerical simulation model in the past. It makes the obtained velocity and direction of flow in the frontage of the piled wharf to more tally with actual situation, and has important reference value for forecasting the strength of sedimentation, the putting forward of the measure for reducing sedimentation as well as the berthing of ships, etc.