2. Menghitung
Koefisien Gaya
Angkat (Lifting
coefficient)
Koefisien gaya angkat dihitung dengan persamaan
w2 = relative velocity after the grating [m/s]
w∞ = medial relative velocity [m/s]
patm = atmospheric pressure [m]
Hs = suction head [m]
pmin = minimal water pressure [m]
ηs = efficiency of the energy change [-]
c3 = velocity after the runner [m/s]
c4 = outlet velocity [m/s]
K = profile characteristic number
4. Ratiol/t
Setelah koefisien gaya angkat (Lifting coefficient)
diperoleh dilanjutkan dengan menghitung ratio l/t
g = acceleration of gravity [m/s2]
Ηh = hydraulic efficiency [-]
H = gross head [m]
Cm = meridian velocity [m/s2]
λ = angle of slip [°]
u = tangential velocity [m/s2]
(180-β∞) = inflow angle [°]
![Menghitung
Koefisien Gaya
Angkat (Lifting
coefficient)
Koefisien gaya angkat dihitung dengan persamaan
w2 = relative velocity after the grating [m/s]
w∞ = medial relative velocity [m/s]
patm = atmospheric pressure [m]
Hs = suction head [m]
pmin = minimal water pressure [m]
ηs = efficiency of the energy change [-]
c3 = velocity after the runner [m/s]
c4 = outlet velocity [m/s]
K = profile characteristic number](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)