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EntityQ1344391· pop 9· linked from 8 articles

涡度拟能

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In fluid dynamics, the enstrophy \mathcal{E} can be interpreted as another type of potential density; or, more concretely, the quantity directly related to the kinetic energy in the flow model that corresponds to dissipation effects in the fluid. It is particularly useful in the study of turbulent flows, and is often identified in the study of thrusters as well as in combustion theory and meteorology.

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Subclass of
scalar quantity
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Article · 中文

涡度拟能(英語:enstrophy)是流体力学中的一个物理量,定义为 即涡度平方的一半(有时亦定义为涡度的平方,即)。因其有着与能量相似的特点,故称作“涡度拟能”。在不可压缩流体中,将涡度方程 (其中为物质导数,为速度,为运动粘性系数) 点乘涡度后可以得到涡度拟能的变化方程: (其中为应变率)

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