Discharge Required At Outlet Calculator

Formula Used:

\[ Q° = \frac{Q_{continuous}}{T} \]

Discharge Required at Outlet (Q°):

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1. What is Discharge Required at Outlet?

Discharge required at outlet refers to the duty at the headwater course in irrigation systems. It represents the flow rate needed at the outlet point to meet the irrigation requirements, calculated based on continuous discharge and time factor.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q° = \frac{Q_{continuous}}{T} \]

Where:

\( Q° \) — Discharge required at outlet (m³/s)
\( Q_{continuous} \) — Continuous discharge required for canal (m³/s)
\( T \) — Time factor in irrigation (ratio)

Explanation: The time factor accounts for the operational schedule of the irrigation system, adjusting the continuous discharge to reflect actual outlet requirements.

3. Importance of Outlet Discharge Calculation

Details: Accurate calculation of outlet discharge is crucial for proper irrigation system design, ensuring adequate water supply to crops while optimizing water resource utilization and system efficiency.

4. Using the Calculator

Tips: Enter continuous discharge in m³/s and time factor as a ratio. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the time factor in irrigation?
A: Time factor is the ratio of the number of days the canal has actually run to the number of days of irrigation period.

Q2: How is continuous discharge determined?
A: Continuous discharge is calculated based on crop water requirements, irrigation area, and system efficiency factors.

Q3: What are typical values for time factor?
A: Time factor typically ranges between 0.5 to 1.0, depending on irrigation scheduling and operational patterns.

Q4: Why is outlet discharge different from continuous discharge?
A: Outlet discharge accounts for the intermittent operation of irrigation systems, while continuous discharge represents the theoretical constant flow requirement.

Q5: How does this calculation affect irrigation system design?
A: Proper outlet discharge calculation ensures that pipes, channels, and control structures are appropriately sized to handle peak flow requirements.