voima toolbox
View all calculations
Sign up
Sign in
Calculation
Calculate
Save results as spreadsheet
Calculations
Recommendations
Centrifugal Decanter (Pieralisi)
Lamellar settling modules
Settling tank: hydraulic superficial loading rate
Tank drainage time
Filter balance
Head loss coefficient in orifices and strainers
View all calculations
Velocity gradient in pipes and circular orifices
Velocity gradient
Velocity gradient
Input data
Incoming flow (Q)
m³/s
m³/h
m³/d
L/s
L/h
L/d
Temperature
°C
°F
K
Diameter (D)
m
mm
cm
km
ft
in
mi
µm
Inner surface roughness (k)
m
mm
cm
km
ft
in
mi
µm
Output data
Velocity
m/s
cm/s
mm/s
m/min
cm/min
mm/min
m/h
m/d
ft/s
in/s
Velocity gradient
1/s
Description
Calculate velocity gradients in pipes and circular orifices
Circular orifice
References
VIANNA, Marcos R. Hidráulica aplicada às estações de tratamento de água. 6. Ed. Belo Horizonte, 3I, 2019.