“vortex”的概念、定义、翻译、参考文献-科学参考

vortex

Mathematics

A region of fluid revolving around an axis in three dimensions or a point in the plane, such as arises in whirlpools and cyclones. A line vortex at the origin has flow velocity

$u (x, y) = \frac{Γ}{2 π} (\frac{- y}{x^{2} + y^{2}}, \frac{x}{x^{2} + y^{2}}) .$

The flow has circulation Γ‎ but is, perhaps surprisingly, irrotational, which highlights that curl measures local rather than global rotation. For a diagram see singularity (fluid dynamics).

Chemical Engineering

Philosophy

单词	vortex
释义	vortex Mathematics A region of fluid revolving around an axis in three dimensions or a point in the plane, such as arises in whirlpools and cyclones. A line vortex at the origin has flow velocity $u (x, y) = \frac{Γ}{2 π} (\frac{- y}{x^{2} + y^{2}}, \frac{x}{x^{2} + y^{2}}) .$ The flow has circulation Γ‎ but is, perhaps surprisingly, irrotational, which highlights that curl measures local rather than global rotation. For a diagram see singularity (fluid dynamics). Chemical Engineering A rotating fluid. See free vortex; forced vortex. Philosophy See Descartes.
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