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2 cards from this section. Quick, good the night before a test.
What is a friction factor?
Think about how friction affects motion in general.
What is the purpose of the Darcy-Weisbach equation?
It relates energy loss to friction.
What does the Darcy-Weisbach equation calculate?
Remember what type of energy is lost in flow.
True or False: The entry loss coefficient is always assumed to be 1.
Consider what happens when fluid enters a pipe.
A pipe system with a length of 1500 m and diameter of 0.10 m has a friction factor of 0.045. If the flow velocity is 3 m/s, calculate the head loss due exclusively to friction.
Keep units consistent and pay attention to decimal placements.
Design a pump system for a pipe that connects two reservoirs 40 m apart in elevation with a required flow rate of 12 L/s. The pipe loses 5 m due to fittings and has a calculated head of 10 m due to friction. What horsepower is required?
Break down the components of elevation, fittings, and friction carefully.
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