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What type of flow is described by a non-zero stream function (ψ) and zero velocity potential function (ϕ)?
14. What type of flow is described by a non-zero stream function (ψ) and zero velocity potential function (ϕ)?
- Irrotational flow
- Rotational flow
- Incompressible flow
- Steady flow
Answer: B) Rotational flow
Explanation:
In a rotational flow, the streamlines are curved and the fluid particles have rotational motion. A non-zero stream function (ψ) and zero velocity potential function (ϕ) indicate such a flow.