Flow net
A hydrodynamic study of the flow past a flat plate is conducted in water. The plate length is L = 0.2 m and the plate width equals the test section width (0.5 m). For a particular angle of incidence, dye injection in a water tunnel gives the flow pattern shown in Figure E3.4 on the next page. The mean flow is horizontal.
(a) Complete the flow net by drawing the suitable equipotentials. (Draw the complete flow net on the examination paper.)
(b) The upstream velocity is 6.5 m/s. Estimate the drag force and the lift force acting on the plate. Indicate clearly the sign convention. You may have to draw more streamline and equipotentials to obtain a good accuracy
