The flow is given by:
|
B |
= |
weir length, L |
|
h |
= |
effective head, L |
|
C |
= |
weir coefficient |
|
n
|
= |
number (0,1,2) of end contractions |
The weir coefficient can be further given (for weirs stretching across the channel) by:
|
g
|
= |
gravity |
|
be
|
= |
effective width (essentially the width) |
|
He
|
= |
effective head (essentially the head) |
|
Cv
|
= |
0.602 + 0.075 h/p for full width weir0.587 - 0.023 h/p for fully contracted weir where p = depth of weir crest above channel bottomh = head |
Note: The weir coefficient required by the program is the C coefficient, not C
v.