For the profile on the downstream side of the body (Fig. 5.65), find the total flowrate through the middle 6 ft of the passage. Then find the average velocity, , and for this region. Then consider the upstream section. What height in the middle of this section would be providing the flowrate that you estimated for the downstream section? Use these two middle sections on either side of the body as boundaries of your control volume. Write the momentum equation using the , and estimate the force on the body.

V = 100 ft/s Vi = 100 ft/s Body 3 ft 3 ft Section (1) Section (2) Figure P5.65 V = 100 ft/s Vi = 100 ft/s Body 3 ft 3 ft Section (1) Section (2) Figure P5.65