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2 cards from this section. Quick, good the night before a test.
What is the Darcy-Weisbach equation used for?
Think about energy losses.
List two factors that affect head loss in a pipe.
Consider the physical dimensions of the pipe.
What does the Darcy-Weisbach equation primarily calculate?
Consider what happens to energy in the flow.
True or False: Minor losses can be ignored in large systems.
Think about how bends and valves might affect flow.
A 1000 m length of 0.1 m diameter pipe has a friction factor of 0.02. What is the head loss if the flow velocity is 2 m/s?
Check your units! They must be consistent throughout the equation.
You need a pump for a system with a total head of 50 m and minor losses adding up to 10 m. If the required flow rate is 0.1 m³/s, calculate the necessary horsepower.
Check your pump design; consider efficiency losses.
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