2) In the figure below, discharge rate at point A is 20 cfs of water. Find the head loss from A to B, as well as the division of flow in each branch. Assume that friction factor is f = 0.03 for all pipes. Take these steps: 1. Ignore minor losses. Only assume friction losses. 2. Set an equation for the sum of the Qs of all branches, and simplify to only have velocities as unknowns 3. Set an equation for the head loss in each branch using D-W, and simplify to only have velocities as unknowns. Then, set the head loss in each branch equal to head loss in other branches. 4. Solve for velocities using the above equations in step 2 and 3. Note: this problem doesn't require iterations to find f (it is already given). 5. Find the total head loss from A to B using the velocities and D-W equation. The head loss from point A to point B does include hi in the two series pipes (24" and 30"), but regarding the parallel branches, carefully follow the lecture materials. Summing up the head losses in the 14", 12" and 16" pipes is not the right approach.
2) In the figure below, discharge rate at point A is 20 cfs of water. Find the head loss from A to B, as well as the division of flow in each branch. Assume that friction factor is f = 0.03 for all pipes. Take these steps: 1. Ignore minor losses. Only assume friction losses. 2. Set an equation for the sum of the Qs of all branches, and simplify to only have velocities as unknowns 3. Set an equation for the head loss in each branch using D-W, and simplify to only have velocities as unknowns. Then, set the head loss in each branch equal to head loss in other branches. 4. Solve for velocities using the above equations in step 2 and 3. Note: this problem doesn't require iterations to find f (it is already given). 5. Find the total head loss from A to B using the velocities and D-W equation. The head loss from point A to point B does include hi in the two series pipes (24" and 30"), but regarding the parallel branches, carefully follow the lecture materials. Summing up the head losses in the 14", 12" and 16" pipes is not the right approach.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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