Practice Rate Of Rotation (2.4) - Basics of Fluids Mechanics-II (Contd.)

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6 sample questions

Question 1.
Define rotational flow in your own words.
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Think about fluid particles moving in circles.
Question 2.
What is irrotational flow?
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It means no local rotation at all.
3Question 3.
In rotational flow, at least one angular velocity component is non-zero.
- True
- False
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Think of the definition of rotation.
4Question 4.
Vorticity is defined as twice the angular velocity.
- True
- False
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Remember the formula involving angular velocities.
Question 5.
Given a velocity field defined by u = 2xy, v = x^2 - 2y, calculate the vorticity and interpret its physical meaning.
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Differentiate u and v!
Question 6.
Consider a flow with angular velocities ω_x = 0.3, ω_y = 0.2, and ω_z = 0.1. Determine if this flow is rotational or irrotational and justify your answer.
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Refer back to the definitions discussed.

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