Flow Velocity Calculator
Input Data
Enter your project data
Volumetric flow rate in cubic meters per hour
Internal pipe diameter in millimeters
Calculation Results
Calculated instantly from your inputs
What This Calculator Does
This calculator computes fluid velocity (V) using the continuity equation V = Q/A. Velocity is a critical design parameter: velocities below 0.6 m/s risk sediment accumulation and air pockets, while velocities above 2.5 m/s cause erosion, noise, and excessive pressure loss. The calculator also determines flow regime (laminar/transitional/turbulent) using the Reynolds number.
Key Points:
- Based on continuity equation (conservation of mass)
- Optimal velocity range: 0.6 - 2.5 m/s for water
- Reynolds number determines flow regime
- Valid for incompressible fluids
Calculation Steps:
- Enter all required parameters
- Click "Update Calculation"
- Review results and analysis
Formula Variables:
V
Velocity
(m/s)
Q
Flow Rate
(m³/s)
A
Cross-sectional Area
(m²)