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Pipeng Free Online Software : Roughness Number Calculators
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Pipeng : Dimensionless Relative Roughness Number Rr Calculation Module

Roughness Number Calculators

Description : Dimensionless roughness ratio or roughness number Rr calculators.

Discussion : The Roughness ratio is the ratio of the pipe wall internal surface roughness to pipe internal diameter.

Calculator Tools In This Module:

CALC : Flow : Numbers 015 : Pipeline Relative Roughness Rr From Roughness and Diameter : Calculator


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CALC : Flow : Numbers 015 : Pipeline Relative Roughness Rr From Roughness and Diameter : Calculator

Description : Calculate the pipeline relative roughness number Rr from the internal roughness r and the pipeline internal diameter.

Input Variables :

  • D = Section Internal Diameter
  • r = Section Internal Roughness

Output Variables :

  • Rr = Internal Pipeline Dimensionless Roughness Number

Calculation :

Rr = r / D

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