FlowCERT (UL)

U-Throated Flume
ABSOLUTE
If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = (2/3) 1.5 g n 0.5 C u C v C d bh 1.5
Where: q = flowrate
g n = gravitational acceleration (nominal value = 980.66 cm/s 2 ) h
= head C u =
shape coefficient calculated by FlowCERT LITE P724
C v = velocity coefficient calculated by FlowCERT LITE P721
C d = discharge coeffecient calculated by FlowCERT LITE P722
b = throat width P711
RATIOMETRIC
U-Throated Flume
If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula:
q= q cal (C v /C vcal )(C d /C dcal )(C u /C ucal )(h/h cal ) 1.5
Where: q = flowrate
q cal = flowrate at maximum head P705
Cv = velocity coefficient calculated by FlowCERT LITE P721
Cv cal = velocity coefficient at maximum head
Cd = discharge coeffecient calculated by FlowCERT LITE P722
Cd cal = discharge coefficient at maximum head
Cu = shape coefficient P724
Cu cal = shape coefficient at maximum head
h = head
= maximum head P704
h cal
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