Dam Calculate Flow Through Low-Level Outlet
Dam calculate flow through low-level outlet is a crucial process in hydrology and water resource management. It helps determine the discharge of water from a dam through its low-level outlet.
- Enter the head (height of water above the outlet) in meters.
- Enter the coefficient of discharge, which is a dimensionless number representing the flow through the outlet.
- Enter the width and height of the outlet in meters.
- Click the ‘Calculate’ button to see the results.
The formula used to calculate the flow is:
Q = 0.785 * cd * b * h * sqrt(2 * g * h)
Where:
- Q is the discharge (m³/s),
- cd is the coefficient of discharge,
- b is the width of the outlet (m),
- h is the height of the outlet (m),
- g is the acceleration due to gravity (9.81 m/s²).
| Head (m) | Width (m) | Height (m) | Discharge (m³/s) |
|---|---|---|---|
| 5 | 2 | 1 | 1.56 |
| 10 | 3 | 2 | 4.70 |
- Always ensure the outlet is clear of debris to maintain the coefficient of discharge.
- Regularly monitor the outlet to prevent excessive erosion.
What is the coefficient of discharge?
The coefficient of discharge is a dimensionless number that represents the flow through the outlet. It is always less than 1 due to friction and other losses.
For more information, see the U.S. Bureau of Reclamation and U.S. Army Corps of Engineers websites.