Homework Statement
I've got the 3D Euler equations
\frac{\delta u}{\delta t} + (u\cdot \nabla)u = -\nabla p
\nabla \cdot u = 0
I've been given that the impulse is
\gamma = u + \nabla\phi
Homework Equations
And I need to derive
\frac{D\gamma}{Dt} = -(\nabla u)^T \gamma + \nabla...