Oil Pipes - Head Loss

Head or pressure loss due to friction in oil pipes - various viscosity and laminar flow. Calculates head loss in oil pipes with laminar flow based on viscosity, flow rate, and pipe diameter.

Oil Pipes - Head Loss Calculator

Head or pressure loss due to friction in oil pipes with laminar flow (Reynolds Number < 2300).

Variables:

  • h = head loss (meter oil per metre oil pipe)
  • f = flow of oil (liter/s)
  • d = internal diameter of pipe (mm)
  • Viscosity = kinematic viscosity (cSt)

Formulas by Viscosity:

  • 4 cSt: h = 1.7×10⁴ f / d⁴
  • 25 cSt: h = 11×10⁴ f / d⁴
  • 45 cSt: h = 20×10⁴ f / d⁴
  • 250 cSt: h = 110×10⁴ f / d⁴
  • 500 cSt: h = 220×10⁴ f / d⁴
Calculator

Inputs

Results

Head Loss-- m/m
Reynolds Number--
Viscosity (cSt)FormulaCoefficient (×10⁴)
4h = 1.7×10⁴ × f / d⁴1.7
25h = 11×10⁴ × f / d⁴11
45h = 20×10⁴ × f / d⁴20
250h = 110×10⁴ × f / d⁴110
500h = 220×10⁴ × f / d⁴220