|July 28, 2005, 11:38||
I have a doubt regarding the pressure work in the energy equation. The rate of work done on fluid per unit volume = del.(Pv)
Expanding this term => P*(del.v) + v.del(P)
First term ( P*(del.v) ) = Reversible work due to compression/expansion.
So what does the second term (v.del(P)) represent physically.
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