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Old   October 4, 2000, 18:15
Default about swirl and vorticity
Junseok Kim
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I wonder what is the difference between swirl and vorticity?

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Old   October 30, 2000, 06:20
Default Re: about swirl and vorticity
Vidyadhar Mudkavi
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dear junseok kim,

vorticity is precisely defined to be the curl of the velocity vector. it represents the presence or absence of rotation in a flow field.

swirl is typically the azimuthal velocity in vortex filament like flow. usually if the swirl is present in a vortex filament (like a tornado), then the vorticity is also present. otherwise thay have no mathematical connection.

-vidyadhar mudkavi 30 october 2000
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Old   November 1, 2000, 18:46
Default Re: about swirl and vorticity
Junseok Kim
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thanks a lot~
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