Fluid Mechanics & Hydraulics
Flow Meter Simulator
Explore differential pressure flow meters (Venturi, Orifice, and Nozzle). Adjust pipe size, throat constriction, fluid density, and pressure drop to calculate flow rates and tap pressures.
Standard
ISO 5167
DP Flow Meter
Fluid Type
Incompressible
Bernoulli Eq
Output
CSV
Export ready
Parameters
Meter Type
Cyclic Pressure Sweep
Fluid Dynamics Equations
Mass Flow Rate qm
qm = Cd · A₂ · √((2 · ρ · ΔP) / (1 - β⁴))
Beta Ratio β
β = d₂ / d₁
Volumetric Flow qv
qv = qm / ρ
Fluid Velocity v
v₁ = qv / A₁, v₂ = qv / A₂
The simulator uses the Bernoulli equation coupled with a discharge coefficient Cd to model friction and turbulence losses.
The beta ratio β represents the contraction ratio. Standard designs restrict β between 0.3 and 0.75 for accurate measurements.
Discharge coefficient Cd defaults: Orifice Plate (0.62), Flow Nozzle (0.95), Venturi Tube (0.98).
Interactive Flow Profile
Mass Flow Rate
19.87kg/s
Volumetric Flow
19.9L/s
Pipe Velocity
2.53m/s
Throat Velocity
10.12m/s
Mass Flow Rate vs Pressure Drop
Flow Rate & Velocity Data
| Pressure Drop ΔP (kPa) | Mass Flow (kg/s) | Vol. Flow (L/s) | Throat Velocity (m/s) |
|---|---|---|---|
| 0.0 | 0.000 | 0.00 | 0.00 |
| 10.0 | 8.888 | 8.89 | 4.53 |
| 20.0 | 12.569 | 12.57 | 6.40 |
| 30.0 | 15.394 | 15.39 | 7.84 |
| 40.0 | 17.775 | 17.78 | 9.05 |
| 50.0 | 19.873 | 19.87 | 10.12 |
| 60.0 | 21.770 | 21.77 | 11.09 |
| 70.0 | 23.514 | 23.51 | 11.98 |
| 80.0 | 25.138 | 25.14 | 12.80 |
| 90.0 | 26.663 | 26.66 | 13.58 |
| 100.0 | 28.105 | 28.11 | 14.31 |