Hydraulics2D

Flow Measurement - Theory & Concepts

Devices and methods for measuring flow rate, including orifices, venturi meters, and weirs.

Venturi Meter Simulation

Equal-elevation pressure taps are assumed. The computed $\Delta H$ is the piezometric-head difference of the flowing fluid, not automatically the raw reading of a heavier differential manometer.

Inlet diameter, D₁0.20 m

Diameter ratio, β = D₂/D₁0.50

Piezometric-head difference0.50 m

Discharge coefficient, Cᵈ0.980

Flowing-fluid density1000 kg/m³

Actual discharge

0.0249 m³/s

Pressure difference

4.91 kPa

Inlet velocity

0.79 m/s

Throat velocity

3.17 m/s

The equation assumes steady incompressible flow, calibrated $C_d$ , pressure taps at equal elevation, and no swirl or severe upstream profile distortion. Installation straight lengths and tap geometry remain part of real meter accuracy.

Properties of Fluids - Theory & Concepts Hydrostatics: Pressure & Manometry - Theory & Concepts - Manometer Hydrostatics: Forces on Surfaces - Theory & Concepts - Hydrostatic Force Relative Equilibrium of Liquids - Theory & Concepts

Venturi Meter Simulation

Related simulations