Hello I am trying to get my head around what the divergence actually represents physically.(adsbygoogle = window.adsbygoogle || []).push({});

If you have some vector field v, and the components of v, vx, vy, vz have dimensions of kg/s ("flow" - mass of material per second) the divergence will have units of kg/(s*m) (mass per time distance)

Say the divergence of v is constant in some region R with volume a.

div(v)*a has units (kg*m^2)/s (mass area per time) - this is the flux of v through area(R)

(div(v)*a)/area(R) has units (mass per time) - the net mass flowing out of R in some time

So what exactly is divergence - kg/(s*m)

Would it be accurate to think of the divergence as"Flux per volume"in general?

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# Divergence of vector field

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