Calculations
Recommendations
Velocity gradient in pipes and circular orificesAtmospheric pressure given altitudeDrainage timeVertical chicane hydraulic flocculator compartmentDynamic viscosity of atmospheric airCentrifugal Decanter (Pieralisi)Tray floculator compartment
Default
Input data
Temperature
Flow
Superficial area
Compartment depth
Distance between orifices
Number of trays
Number of orifices
Diameter of the orifices
Discharge coefficient
Output data
Detetion time
Distance between trays
Velocity gradient
Head loss of the compartment
Description
Given the water temperature, the flow to be treated, the superficial area and the depth of the compartment, the number of trays, the number and diameter of the orifices in each tray, the distance between them, and the discharge coefficient, this calculation determines:
- Detention time
- Distance between trays
- Jet reach
- Velocity gradient
- Head loss of the compartment
Inputs
| Parameter | Default Units | Description |
|---|---|---|
| Temperature | °C | Water temperature |
| Flow | m³/s | Flow to be treated |
| Superficial area | m² | Superficial area of the compartment |
| Depth of the compartment | m | Depth of the compartment |
| Distance between orifices | m | Distance between orifices |
| Number of trays | - | Number of trays in the compartment |
| Number of orifices | - | Number of orifices per tray |
| Diameter of the orifices | mm | Diameter of the orifices |
| Discharge coefficient | - | Discharge coefficient |
Outputs
| Parameter | Default Units | Description |
|---|---|---|
| Detention time | s | Time required for retention |
| Distance between trays | m | Vertical distance between trays |
| Velocity gradient | s⁻¹ | Velocity gradient in the compartment |
| Head loss of the compartment | m | Hydraulic head loss |
| Flow | L/s | Flow exiting the compartment |
References
- AZEVEDO NETTO, J. M. DE. Manual de hidráulica. 9. Ed. São Paulo, Blucher, 2015.