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Pipeng Free Online Software : Reynolds Number Calculators
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Pipeng : Dimensionless Reynolds Number Re Calculation Module

Reynolds Number Calculators

Description : Dimensionless Reynolds number Re calculators.

Discussion : The Reynolds number is the ratio of inertial forces to viscous forces.

Calculator Tools In This Module:

CALC : Flow : Numbers 001 : Dynamic Viscosity μ From Kinematic Viscosity ν and Density ρ : Calculator
CALC : Flow : Numbers 002 : Kinematic Viscosity ν From Dynamic Viscosity μ and Density ρ : Calculator
CALC : Flow : Numbers 011 : Reynolds Number From Dynamic Viscosity μ and Fluid Velocity V : Calculator
CALC : Flow : Numbers 012 : Reynolds Number From Dynamic Viscosity μ and Fluid Flow rate Q : Calculator
CALC : Flow : Numbers 013 : Reynolds Number From Kinematic Viscosity ν and Fluid Velocity V : Calculator
CALC : Flow : Numbers 014 : Reynolds Number From Kinematic Viscosity ν and Fluid Flow rate Q : Calculator
CALC : Flow : Numbers 016 : Reynolds Number Gas From Dynamic Viscosity μ Molar Mass and Mole Flow Rate N : Calculator
CALC : Flow : Velocity 001 : Fluid Velocity V From Volume Flow Rate Q : Calculator
CALC : Flow : Velocity 011 : Volume Flow Rate Q From Fluid Velocity V : Calculator


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Module List

CALC : Flow : Numbers 001 : Dynamic Viscosity μ From Kinematic Viscosity ν and Density ρ : Calculator

Description : Calculate the dynamic viscosity μ from the kinematic viscosity ν and density ρ.

Input Variables :

  • ν = Fluid Kinematic Viscosity
  • ρ = Fluid Density

Output Variables :

  • μ = Fluid Dynamic Viscosity

Calculation :

μ = ν ρ

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CALC : Flow : Numbers 002 : Kinematic Viscosity ν From Dynamic Viscosity μ and Density ρ : Calculator

Description : Calculate the kinematic viscosity ν from the dynamic viscosity μ and density ρ.

Input Variables :

  • μ = Fluid Dynamic Viscosity
  • ρ = Fluid Density

Output Variables :

  • ν = Fluid Kinematic Viscosity

Calculation :

ν = μ / ρ

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CALC : Flow : Numbers 011 : Reynolds Number From Dynamic Viscosity μ and Fluid Velocity V : Calculator

Description : Calculate the pipeline flow Reynolds number Re from the dynamic viscosity μ, density ρ and velocity V.

Input Variables :

  • μ = Fluid Dynamic Viscosity
  • ρ = Fluid Density
  • D = Section Internal Diameter
  • V = Fluid Velocity

Output Variables :

  • Re = Fluid Dimensionless Reynolds Number

Calculation :

Re = ( ρ V D ) / μ

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CALC : Flow : Numbers 012 : Reynolds Number From Dynamic Viscosity μ and Fluid Flow rate Q : Calculator

Description : Calculate the pipeline flow Reynolds number Re from the dynamic viscosity μ, density ρ and flow rate Q.

Input Variables :

  • μ = Fluid Dynamic Viscosity
  • ρ = Fluid Density
  • D = Section Internal Diameter
  • Q = Fluid Volume Flowrate

Output Variables :

  • Re = Fluid Dimensionless Reynolds Number

Calculation :

Re = ( 4 ρ Q ) / ( π μ D )

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CALC : Flow : Numbers 013 : Reynolds Number From Kinematic Viscosity ν and Fluid Velocity V : Calculator

Description : Calculate the pipeline flow Reynolds number Re from the kinematic viscosity ν and velocity V.

Input Variables :

  • ν = Fluid Kinematic Viscosity
  • D = Section Internal Diameter
  • V = Fluid Velocity

Output Variables :

  • Re = Fluid Dimensionless Reynolds Number

Calculation :

Re = ( V D ) / ν

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CALC : Flow : Numbers 014 : Reynolds Number From Kinematic Viscosity ν and Fluid Flow rate Q : Calculator

Description : Calculate the pipeline flow Reynolds number Re from the kinematic viscosity ν and flow rate Q.

Input Variables :

  • ν = Fluid Kinematic Viscosity
  • D = Section Internal Diameter
  • Q = Fluid Volume Flowrate

Output Variables :

  • Re = Fluid Dimensionless Reynolds Number

Calculation :

Re = ( 4 Q ) / ( π ν D )

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CALC : Flow : Numbers 016 : Reynolds Number Gas From Dynamic Viscosity μ Molar Mass and Mole Flow Rate N : Calculator

Description : Calculate the pipeline flow Reynolds number Re from the dynamic viscosity μ, molecular weight mw and mole flow rate N.

Discussion : For gas flow the Reynolds number is independent of the fluid density pressure or temperature provided that the compressibility factor Z is constant.

Input Variables :

  • μ = Fluid Dynamic Viscosity
  • D = Section Internal Diameter
  • N = Fluid Mole Flow Rate
  • mw = Fluid Mole Weight or Molar Mass

Output Variables :

  • Re = Fluid Dimensionless Reynolds Number

Calculation :

Re = ( 4 mw N ) / ( π μ D )

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CALC : Flow : Velocity 001 : Fluid Velocity V From Volume Flow Rate Q : Calculator

Description : Calculate the fluid velocity V in a pipeline from the volume flow rate Q.

Input Variables :

  • D = Section Internal Diameter
  • Q = Fluid Volume Flowrate

Output Variables :

  • V = Fluid Velocity

Calculation :

V = ( 4 Q ) / ( π D 2 )

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CALC : Flow : Velocity 011 : Volume Flow Rate Q From Fluid Velocity V : Calculator

Description : Calculate the volume flow rate Q in a pipeline from the fluid velocity V.

Input Variables :

  • D = Section Internal Diameter
  • V = Fluid Velocity

Output Variables :

  • Q = Fluid Volume Flowrate

Calculation :

Q = ( π V D 2 ) / 4

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