NormCalcEngineering tools
v = Q/A

Flow velocity from volumetric flow

At fixed flow, velocity is inversely proportional to area.

MINTSI
01

Inputs

Cross-section averaged axial velocity.

Volumetric flow in the pipe.

Hydraulically open cross-section.

02

Result

Select a target and calculate.

Calculation

v = Q / A

At fixed flow, velocity is inversely proportional to area.

Understand the inputs
  • Mean velocity v — Cross-section averaged axial velocity.
  • Volumetric flow Q — Volumetric flow in the pipe.
  • Open area A — Hydraulically open cross-section.
Example

60 l/min through 1,000 mm² gives 1 m/s.

Assumptions and limits

Incompressible, uniformly distributed flow.

Sources
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