The material derivative

1. Oct 13, 2013

joshmccraney

hey pf! can someone please tell me if my understanding of the material derivative operating over some scalar $\rho$ is correct? basically, from my understanding if we take $\frac{ D \rho}{D t}$ this will tell us how $\rho$ changes as time changes AND how $\rho$ changes as we move our little piece of $\rho$ through space. is this correct?

thanks!

2. Oct 16, 2013

timthereaper

Yeah, I would say that's pretty much correct.