Aerospace Engineering > GATE 2025 > Vortex Flow
Consider a pair of point vortices with clockwise circulation Γ each. The distance between their centers is a, as shown in the figure. Assume two-dimensional, incompressible, inviscid flow. Which one of the following options is correct?
A
The vortices translate downwards together with a velocity Γ/(2πa)
B
The vortices translate upwards together with a velocity Γ/(2πa)
C
The vortices rotate clockwise around each other about their centroid O.
D
The vortices rotate counter-clockwise around each other about their centroid O.

Correct : a

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aerospace gate 2025 vortices motion point vortices two dimensional flow GATE aerospace vortices translation vortices rotation centroid vortices vortices velocity GATE 2025 question 20

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