Flow Continuity
Find downstream velocity for incompressible steady flow.
Your numbers
Downstream velocity
Idealized SI-unit model for educational estimates. Confirm material properties, boundary conditions and applicability before engineering use.
Scenario comparison
Up to three snapshots in this tab. Loading one replaces the current inputs.
Formula
A₁v₁=A₂v₂
Find downstream velocity for incompressible steady flow.
Worked example
- Upstream area (m²)
- 0.02
- Upstream velocity (m/s)
- 2
- Downstream area (m²)
- 0.01
- Downstream velocity
- 4 m/s
- Volume flow
- 0.04 m³/s
Scope and limitations
Idealized SI-unit model for educational estimates. Confirm material properties, boundary conditions and applicability before engineering use.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: d9cb980a3b83 · Example checked: