Aerospace Engineering > GATE 2009 > Vortex Dynamics
Two vortices of the same strength and sign are placed a distance d apart as shown below. Assume that the vortices are free to move and the fluid is ideal.
Which of the following statements is true ?
A
Vortices 1 and 2 spiral inwards with an initial angular speed Γ2π d2 to finally merge and form one vortex of twice the strength.
B
Vortices 1 and 2 spiral inwards with an initial angular speed to finally merge and form one vortex of twice the strength.
C
Vortices 1 and 2 perpetually revolve about the midpoint P with radius of revolution d2 and angular speed Γπ d2
D
Vortices 1 and 2 perpetually revolve about the midpoint P with radius of revolution d2 and angular speed Γ2π d2

Correct : d

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Related Topics

vortices motion vortices ideal fluid GATE Aerospace Engineering 2009 vortex motion angular speed vortices revolution vortices vortex merging vortices radius of revolution GATE 2009 aerospace

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