Question

Plz help will give medal and fan!!!
is a vortex...
A)cylinder
B)center

Answer 1

how do u know?

Answer 2

its a

Answer 3

ABSTRACT The motion of two pairs of counter-rotating point vortices placed in a
uniform flow past a circular cylinder is studied analytically and numerically.
When the dynamics is restricted to the symmetric subspace---a case that can be
realized experimentally by placing a splitter plate in the center plane---, it
is found that there is a family of linearly stable equilibria for same-signed
vortex pairs. The nonlinear dynamics in the symmetric subspace is investigated
and several types of orbits are presented. The analysis reported here provides
new insights and reveals novel features of this four-vortex system, such as the
fact that there is no equilibrium for two pairs of vortices of opposite signs
on the opposite sides of the cylinder. (It is argued that such equilibria might
exist for vortex flows past a cylinder confined in a channel.) In addition, a
new family of opposite-signed equilibria on the normal line is reported. The
stability analysis for antisymmetric perturbations is also carried out and it
shows that all equilibria are unstable in this case.

Answer 4

um... I guess i'll go with A then

Answer 5

What happen what happen to her comment?

Answer 6

it vanished... like a ghost...

Answer 7

i think she deleted it

Answer 8

thank you

Answer 9

np