# Can pitot tubes be used for unsteady flows?

The classical derivation of the Pitot tube equation assumes that the fluid is in a steady flow to use the Bernoulli equation version for steady flows. But in practice, does Pitot tube can be used also for unsteady flows?

• Yes. The length scale over which pitot tubes operate is very short, so it is valid to consider the unsteady flow as quasi-steady. – Chet Miller Nov 8 at 19:13