Fluid Mechanics.pdf

Fluid mechanics Tut 5 Problem 1: Air at 1 atm and 68 is flowing in a long, rectangular duct whose cross section is 1 ft by 1.5ft. The average velocity is 40ft/s. The roughness of the duct is 0.00006 in. What is the pressure drop per unit length? Problem 2: We wish to transport 1000 ft3/s of water steadily in a concrete lined irrigation canal - The absolute roughness of a concrete-lined irrigation ditch is estimated to be 0.01 ft- , which is rectangular, 10 ft by 10 ft, and open at the top. How much must we slope the canal?

H.W (2) A gasoline storage tank drains by gravity to a tank truck; see Fig. below. The pipeline between the tank and the truck is 200 ft of 1-in schedule 40 commercial steel pipe. The properties of gasoline are given in the Common Units and Values for Problems and Examples. Both tank and truck are open to the atmosphere, and the level in the tank is 20 ft above the level in the truck. What is the flow rate of the gasoline?