Video 1 C1: Flow & Head Loss in Closed Conduits Flashcards
what does Grady compare pipes to in this video?
conductors
A larger pipe will have a ______ velocity.
lower
A small pipe will have a _____ velocity.
higher
friction and turbulence are mostly a result of…
flow velocity
what is ‘head loss’ in other words?
the drop in pressure from one end of a pipe to the other
based off the HW eqn, we should know that if we double the length of the pipe, this will….
double the headloss (hL)
changing the diameter changes the ____ ______
fluid velocity
if we decrease the diameter, the fluid velocity will _______, and thus the headloss will _____.
increase; increase
what does Hazen-Williams Eqn not consider?
MINOR LOSSES:
the friction+turbulence that occurs at sudden changes in direction or expansion/contraction of the flow
what creates minor losses?
- elbows/turns/bends
- sudden change in direction
- expansion/contraction in the pipe
what analogy does Grady compare turns in pipes to?
Like walking through a hallway that you’ve never been down. You don’t anticipate the bends/turns, and therefore crash into sides/change directions
More pressure gives ____ flow
more
less friction gives ____ flow
more
reducing length, L means _____ pressure
more
