- #1
previah
- 4
- 0
Hi all,
I'm sure a lot of you know about the head loss due to sudden expansion:
Hl = (1/2g)*(v1-v2)^2
This equation can be derived from Bernoulli, continuity and momentum balans equations. The underlying assumption in deriving this equation is that the pressure just after the expansion (say, p0) is equal to the pressure before the expansion (p1).
Now, I was wondering how accurate is this assumption? And what is the underlying physics behind this assumption?
best regards,
-Arman-
I'm sure a lot of you know about the head loss due to sudden expansion:
Hl = (1/2g)*(v1-v2)^2
This equation can be derived from Bernoulli, continuity and momentum balans equations. The underlying assumption in deriving this equation is that the pressure just after the expansion (say, p0) is equal to the pressure before the expansion (p1).
Now, I was wondering how accurate is this assumption? And what is the underlying physics behind this assumption?
best regards,
-Arman-