Pipe Fluid Flow Velocity

Calculate fluid flow and pipe velocity

Imperial units

Fluid flow velocity in a circular pipe can be calculated with Imperial or American units as

v = 1.274 q / d2

= 0.4085 qgpm / din2         (1)

where

v = velocity (ft/s)

q = volume flow (ft3/s)

d = pipe inside diameter (ft)

qgpm = volume flow (US gal./min)

din = pipe inside diameter (inches)

SI units

Fluid flow velocity in a circular pipe can be calculated with SI units as

v = 1.274 q / d2         (2)

where

v = velocity (m/s)

q = volume flow (m3/s)

d = pipe inside diameter (m)

Related Topics

  • Fluid Mechanics - The study of fluids - liquids and gases. Involves various properties of the fluid, such as velocity, pressure, density and temperature, as functions of space and time.
  • Fluid Flow and Pressure Drop - Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more
  • Pipe Sizing - Sizing steam and condensate pipes - pressure loss, recommended velocity, capacity and more

Related Documents

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Edition - Online 3D modeling!

3D Engineering ToolBox - draw and model technical applications

Engineering ToolBox - SketchUp Edition - add standard and customized parametric components - like flange beams, lumbers, piping and more - to your SketchUp model - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro. Add from the Sketchup Extension Warehouse!

Translate the Engineering ToolBox!
About the Engineering ToolBox!