1. Example
Water at 95°C is flowing at a rate of 2.0 ft3/s through a 60° bend, in which there is a contraction from 4 to 3 inches internal diameter. Compute the force exerted on the bend if the pressure at the downstream end is 1.1 atm. The density and viscosity of water at the conditions of the system are g/cm3 and cp, respectively.

2. Example
A jet of water having a velocity of 30 m/s and a diameter of 2.5 cm is deflected by a smooth, flat vane, where there are no changes in elevation or pressure before and after impact. What is the force of the jet on the vane?

3. Quiz 4 –

4. Quiz
Water is flowing at steady state through a reducing bend as shown below. The angle 2 = 90, and the pressure at point 2 is 1.0 atm abs. The flow rate is m3/s and the diameters at points 1 and 2 are m and .030 m, respectively. Neglect frictional and gravitational forces. Calculate the resultant forces on the bend.
TIME IS UP!!!