1. What is Velocity from Flow Rate?

Velocity is the speed at which a fluid flows through a given cross-sectional area. It's calculated by dividing the volumetric flow rate by the cross-sectional area of flow.

2. How Does the Calculator Work?

The calculator uses the velocity formula:

Where:

• \( v \) — Velocity (m/s)
• \( Q \) — Volumetric flow rate (m³/s)
• \( A \) — Cross-sectional area (m²)

Explanation: The equation shows that velocity increases with higher flow rates and decreases with larger cross-sectional areas.

3. Importance of Velocity Calculation

Details: Calculating velocity is essential for designing piping systems, understanding fluid dynamics, and ensuring proper flow conditions in various engineering applications.

4. Using the Calculator

Tips: Enter flow rate in m³/s and cross-sectional area in m². Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: The calculator uses SI units (m³/s for flow rate, m² for area, and m/s for velocity). Convert other units to these before calculation.

Q2: Does this work for any fluid?
A: Yes, the basic velocity calculation is the same for all fluids, though viscosity and other factors may affect actual flow conditions.

Q3: What if the area changes along the pipe?
A: This calculator gives velocity at a specific cross-section. For varying areas, you'd need to calculate velocity separately for each section.

Q4: How does velocity relate to pressure?
A: According to Bernoulli's principle, velocity and pressure are inversely related in horizontal flow (higher velocity means lower pressure).

Q5: What's a typical velocity for water in pipes?
A: Common design velocities are 1-3 m/s for water in supply pipes, though this varies by application and pipe size.