Abstract
The hydrodynamic force acting on a vertical thin-plate has been studied experimentally and numerically under conditions in which the flow is subcritical and the variation of water surface is very small. The pressure acting on the upstream and downstream faces of the plate has been characterized and an experimental formula for the drag force has been proposed. The pressure magnitude and distribution on the plate has been calculated numerically by using the two dimensional incompressible Navier-Stokes equation under simplified conditions. The hydraulic condition for predicting the pressure and the drag force on the plate has been shown, and the velocity field around the plate has been discussed.
