1. What is the Discharge Formula?

The discharge formula Q = C × A_cs × H calculates the rate of flow of liquid from an open well, where C is the percolation intensity coefficient, A_cs is the cross-sectional area, and H is the depression head.

2. How Does the Calculator Work?

The calculator uses the discharge formula:

Where:

• \( Q \) — Discharge (m³/s)
• \( C \) — Percolation intensity coefficient (m/s)
• \( A_{cs} \) — Cross-sectional area (m²)
• \( H \) — Depression head (m)

Explanation: The formula calculates the volumetric flow rate by multiplying the percolation coefficient, cross-sectional area, and depression head.

3. Importance of Discharge Calculation

Details: Accurate discharge calculation is crucial for well design, groundwater management, and determining the yield capacity of open wells in various geological formations.

4. Using the Calculator

Tips: Enter percolation intensity coefficient in m/s, cross-sectional area in m², and depression head in m. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is percolation intensity coefficient?
A: The percolation intensity coefficient is a constant that represents the permeability characteristics of the formation around the well.

Q2: How is cross-sectional area determined?
A: Cross-sectional area is typically calculated based on the well's diameter or shape at the point of measurement.

Q3: What is depression head?
A: Depression head is the height difference between the static water level and the pumping water level in the well.

Q4: When is this formula most applicable?
A: This formula is particularly useful for calculating discharge from open wells in unconfined aquifers with steady-state conditions.

Q5: Are there limitations to this equation?
A: The formula assumes homogeneous formation properties and may need adjustment for complex geological conditions or transient flow conditions.