People always show vorticity Iso-Surfaces for LES modeling. However Picking up different vorticity, you should get different shapes of vorticity Iso-Surface . Can someone please explain, what's the physical difference of the Iso-Surface for the larger and smaller vorticity.
For example, what physical phenomena can the contour of the smaller vorticity represents and what does the contour of larger vorticity represnts.
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