1. What is a Flow Velocity to Flow Rate Calculator?

Definition: This calculator converts flow velocity and cross-sectional area into volumetric flow rate using the continuity equation.

Purpose: It helps engineers, plumbers, and fluid system designers determine the volume of fluid moving through a pipe or channel per unit time.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The flow rate is simply the product of the fluid's velocity and the cross-sectional area of the pipe or channel.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculations are essential for designing piping systems, sizing pumps, calculating pressure drops, and ensuring proper system performance.

4. Using the Calculator

Tips: Enter the flow velocity in m/s and the cross-sectional area in m². For circular pipes, area = π × (diameter/2)². All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What units does this calculator use?
A: The calculator uses metric units (m/s for velocity, m² for area, and m³/s for flow rate).

Q2: How do I calculate area for a circular pipe?
A: Use the formula A = π × r² where r is the pipe radius. Our Pipe Flow Calculator can help with this.

Q3: Does this work for any fluid?
A: Yes, the calculation is valid for any incompressible fluid (water, oil, etc.) flowing through a closed conduit or open channel.

Q4: What if my pipe isn't circular?
A: You'll need to calculate the cross-sectional area differently (e.g., width × height for rectangular ducts).

Q5: How does viscosity affect the calculation?
A: Viscosity affects the velocity profile but not the basic Q = V × A relationship, which uses average velocity.