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Fluxions

Derivatives depend on what you hold constant!

Lagrangian/material/substantial time derivatives:

Eulerian time derivatives:

Example:

Exercise:

What can you say about the pressure field for the flow in the picture? Is the pressure increased on the curved walls to keep the incoming stream from going through the wall?

Calculus:

Physics:

The additional terms are the convective terms.


Next: Decomposition Up: Kinematics Previous: Eulerian
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