1. What is a Linear to Volumetric Flow Calculator?

Definition: This calculator converts linear flow velocity to volumetric flow rate in gallons per minute (GPM).

Purpose: It helps engineers and technicians determine the volumetric flow rate in pipes or channels based on flow velocity and cross-sectional area.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Volumetric flow rate (gallons per minute, GPM)
• \( V \) — Flow velocity (feet per second, ft/s)
• \( A \) — Cross-sectional area (square feet, ft²)
• 448.83 — Conversion factor (cubic feet to gallons and seconds to minutes)

Explanation: The velocity is multiplied by the cross-sectional area to get cubic feet per second, then converted to GPM.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculations are essential for pipe sizing, pump selection, and system design in water distribution, HVAC, and industrial processes.

4. Using the Calculator

Tips: Enter the flow velocity in ft/s and the cross-sectional area in ft². All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 448.83?
A: It combines 7.48052 (gallons per cubic foot) and 60 (seconds per minute): 7.48052 × 60 ≈ 448.83.

Q2: How do I find the cross-sectional area?
A: For circular pipes: \( A = \pi \times r² \) where r is the radius in feet.

Q3: What's a typical flow velocity in pipes?
A: Typically 2-5 ft/s for water systems, but varies by application and pipe size.

Q4: Can I use this for other fluids?
A: Yes, but the result will be in GPM of that fluid (density doesn't affect the calculation).

Q5: What if my area is in square inches?
A: Convert to square feet first (divide by 144) before entering the value.