What exactly is static pressure in Bernoulli’s equation.

Question

I’m quite confused on what the static pressure P is in Bernoulli’s equation. I’m not sure if it’s the external pressure causing fluid to move through, let’s say, a pipe, or the internal pressure within the fluid that’s moving in all the directions.

In: 33

Answer 1

r/ShaemusOdonnelly answered this correctly, but he might be getting downvoted, I can’t tell.

OP, what you described as internal pressure is indeed static pressure. 👍🏼

Source: PhD in Aeronautics.