Vorticity
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Vorticity
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A vector
measure of local rotation in a
fluid flow, defined mathematically as the curl of the velocity vector,
Ω is the vorticity; V is the velocity; and Missing Image:img src="SP7_v_files/del.gif" alt="del operator" is the del-operator.
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The vorticity component normal to a small plane element is the lime of
the circulation per unit area as the area of the element approaches zero. The
vorticity of a solid rotation is twice the angular velocity vector. In
meteorology, the vorticity usually refers to the vertical component of the
vorticity as defined above.
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References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use