So if we have ratios like Reynolds number or Weber number, i,e ratio of inertial to viscous forces and ratio of inertial to surface tension forces respectively, I've seen many texts say that when these non-dimensional numbers are very high, the physics is "inertia dominated".(adsbygoogle = window.adsbygoogle || []).push({});

I don't really understand what this means. Can anyone explain?

As an example, for Reynolds number, we say in high Re flows, inertia dominates at the large scales and in high velocity collisions, inertia dominates the surface tension, but what, physically, does that mean?

Thanks

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# "Inertia Dominated"

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