mass divergence
The divergence of the momentum field, a measure of the rate of net flux of mass out of a unit volume of a system; in symbols, ∇ · ρu, where ρ is the fluid density, u the velocity vector, and ∇ the del operator.
The divergence of the momentum field, a measure of the rate of net flux of mass out of a unit volume of a system; in symbols, ∇ · ρu, where ρ is the fluid density, u the velocity vector, and ∇ the del operator.