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2 cards from this section. Quick, good the night before a test.
What does the Momentum Equation relate?
Think about Newton's second law.
Define 'control volume' in fluid mechanics.
It's like a fixed box around the fluid.
What is the main focus of the Momentum Equation?
Think about what the equation involves.
True or False: The control volume can change shape during fluid flow.
Remember the definition of a control volume.
A water jet at a velocity of 20 m/s enters a nozzle with a cross-sectional area reduction, resulting in a pressure change of 2000 Pa. Calculate the change in momentum for the water.
Know the relationship between pressure, area, and velocity variation.
In a turbulent flow through a pipe, the velocity increases from 3 m/s to 6 m/s at a bend. Calculate the net force acting on the fluid.
Focus on how momentum is influenced by velocity changes at the bend.
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