Fluid mechanics and water resources · Fluid mechanics
Volumetric flow rate from area and velocity
Estimate volumetric flow through a cross-section from its area and mean flow speed.
Method and scope
Q = A v̄.
Use volumetric flow rate from area and velocity for educational calculation or a clearly scoped arithmetic estimate. Intended for Learners, General educational use.
Inputs- Flow cross-sectional area — m², ft²
- Mean flow velocity — m/s, km/h
SOURCE AND LIMITS
Assumptions: Velocity is the cross-section mean velocity normal to the area. Flow is steady at the measurement section.
Limitations: For nonuniform flow, use the area integral of normal velocity.
Method version 1.0.0 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.Explore related fields
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