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OpenSpecEngineering

Open data for a field built on precision

Orifice/Venturi Flow

Volumetric flow rate from a measured pressure drop across a flow restriction. Use a discharge coefficient Cd around 0.98 for a well-made venturi, or 0.6–0.65 for a sharp-edged orifice plate.

D1, P1 D2, P2 ΔP = P1 − P2 measured across the throat
Venturi (or orifice) meter: flow accelerates through the reduced throat, dropping pressure.

Solution

History