Question

A paddle wheel is immersed in a river current to generate shaft power. The velocity of the river flow is U-10m/s. to simplify the calculation, assume that only one paddle submerged in the water and its working condition is such that it is always at the exact vertical position as shown in the figure (evern though the paddle wheel rotates continuously) Also assume that the paddles are circular disks. The dimension of the apparatuses is given in the figure. the angular speed of the shaft is w. Neglect the drag force acting on the and the rod and neglect the drag force from the air. The density and dynamic viscosity of the water are p 1000 kg/m*3 and u1 103 pa respectively A. Develop expression of Torque (T) and power(p) =T ω of paddle wheel. B. Determine the angular speed of the C. Determine value of Pmax in Kw. shaft which the shaft power reaches at maximum (Pm)

Answer 1

Griven - 0.95m

Coose CoS Cose 2 23

uc = 60839 881.97