Assumptions: steady, incompressible, inviscid (frictionless) flow along a single streamline.
- Fluid density stays constant.
- Flow properties don't change with time at a given point.
- Viscous (friction) losses are negligible.
If friction losses matter for your system (long pipe runs, rough pipe, fittings), use the
Head Loss / Darcy-Weisbach Calculator instead or in addition.