1. What is the Flow Rate Equation?

The flow rate equation (Q = v × A) calculates the volumetric flow rate of water through a pipe by multiplying the water velocity by the cross-sectional area of the pipe.

2. How Does the Calculator Work?

The calculator uses the flow rate equation:

Where:

• \( Q \) — Volumetric flow rate (m³/s)
• \( v \) — Flow velocity (m/s)
• \( A \) — Cross-sectional area of the pipe (m²)

Explanation: The equation shows that flow rate increases with either higher velocity or larger pipe diameter (which increases area).

3. Importance of Flow Rate Calculation

Details: Calculating flow rate is essential for designing plumbing systems, determining pump requirements, and ensuring proper water supply in various applications.

4. Using the Calculator

Tips: Enter velocity in meters per second and area in square meters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure pipe velocity?
A: Velocity can be measured with flow meters or calculated from pressure difference and pipe characteristics.

Q2: What's a typical water velocity in pipes?
A: Domestic water systems typically have velocities between 0.5-2.5 m/s to balance flow and pressure loss.

Q3: How does pipe diameter affect flow rate?
A: Larger diameter pipes have greater cross-sectional area, allowing higher flow rates at the same velocity.

Q4: What units should I use?
A: This calculator uses SI units (m/s and m²). For imperial units, convert to metric first or use an appropriate conversion factor.

Q5: Does this work for other fluids?
A: The basic equation applies to all fluids, but viscosity and density affect velocity in real-world applications.