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2 cards from this section. Quick, good the night before a test.
What is the Mach number threshold for assuming incompressible flow?
Remember the conditions under which flow becomes incompressible.
Define control volume.
Think about where you would set boundaries in flow problems.
Under what Mach number is the flow generally considered incompressible?
Think about the balance of flow properties.
True or False: Incompressible flow means that the density of the fluid changes regardless of the flow conditions.
Reflect on the definition of incompressibility.
A fluid with a Mach number of 0.15 is flowing in a horizontal pipe. Describe how you would analyze the flow in terms of the simplifications discussed and derive the relevant equations.
Refer to the definitions of incompressible flow.
If a pipe has a varying diameter, explain how you would approach calculating mass flow rate with respect to the assumptions laid out about incompressibility.
Think about how area affects velocity in comparison with density.
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