Recent content by me24

Frame of reference for the Reynolds Transport Theorem I think I've more or less got to grips with this problem. The probem arose because I misunderstood the frame of reference for the Reynolds Transport Theorem (RTT). The RTT is simply obtained by differentiating a volume integral with...

Astronuc, thanks for your comments. I was actually claiming that the time-derivative of \int \rho\,x\,dV is zero, rather than the integral itself. I have subsequently realized that the time-derivative is not zero; perhaps that's what you meant? I'll give a longer reply in the next post.

The Reynolds Transport theorem (RTT) is usually applied to derive the conservation of mass, momentum and energy in a fluid. But when I try to apply the RTT to other physical quantities, I get weird results. Can anyone see where I'm going wrong? As a simple example, take the physical...