Reynolds Number given Friction Factor Calculator

✖Darcy Friction Factor is denoted by f. Its value depends on the flow's Reynolds number Re and on the pipe's relative roughness ε / D. It can be obtained from Moody's chart.ⓘ Darcy Friction Factor [f]

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✖The Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities.ⓘ Reynolds Number given Friction Factor [Re]

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Formula

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Reynolds Number given Friction Factor

Formula

`"Re" = 64/"f"`

Example

`"12.8"=64/"5"`

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Reynolds Number given Friction Factor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Reynolds Number = 64/Darcy Friction Factor
Re = 64/f
This formula uses 2 Variables

Variables Used

Reynolds Number - The Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities.
Darcy Friction Factor - Darcy Friction Factor is denoted by f. Its value depends on the flow's Reynolds number Re and on the pipe's relative roughness ε / D. It can be obtained from Moody's chart.

STEP 1: Convert Input(s) to Base Unit

Darcy Friction Factor: 5 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Re = 64/f --> 64/5

Evaluating ... ...

Re = 12.8

STEP 3: Convert Result to Output's Unit

12.8 --> No Conversion Required

FINAL ANSWER

12.8 <-- Reynolds Number

(Calculation completed in 00.005 seconds)

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Home » Engineering » Civil » Hydraulics and Waterworks » Laminar Flow » Steady Laminar Flow in Circular Pipes – Hagen Poiseuille Law » Darcy – Weisbach Equation » Reynolds Number given Friction Factor

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Created by Rithik Agrawal

National Institute of Technology Karnataka (NITK), Surathkal

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< 14 Darcy – Weisbach Equation Calculators

Diameter of Pipe given Head Loss due to Frictional Resistance

Go Diameter of Pipe = Darcy Friction Factor*Length of Pipe*(Mean Velocity^2)/(2*[g]*Head Loss due to Friction)

Length of Pipe given Head Loss due to Frictional Resistance

Go Length of Pipe = (Head Loss due to Friction*2*[g]*Diameter of Pipe)/(Darcy Friction Factor*Mean Velocity*2)

Head Loss due to Frictional Resistance

Go Head Loss due to Friction = Darcy Friction Factor*Length of Pipe*(Mean Velocity^2)/(2*[g]*Diameter of Pipe)

Diameter of Pipe given Friction Factor

Go Diameter of Pipe = (64*Dynamic Viscosity)/(Darcy Friction Factor*Mean Velocity*Density of Fluid)

Dynamic Viscosity given Friction Factor

Go Dynamic Viscosity = (Darcy Friction Factor*Mean Velocity*Diameter of Pipe*Density of Fluid)/64

Density of Fluid given Friction Factor

Go Density of Fluid = Dynamic Viscosity*64/(Darcy Friction Factor*Diameter of Pipe*Mean Velocity)

Density of Liquid given Shear Stress and Darcy Friction Factor

Go Density of Fluid = 8*Shear Stress/(Darcy Friction Factor*Mean Velocity*Mean Velocity)

Pressure Gradient given Total Required Power

Go Pressure Gradient = Power/(Length of Pipe*Cross Sectional Area of Pipe*Mean Velocity)

Area of Pipe given Total Required Power

Go Cross Sectional Area of Pipe = Power/(Length of Pipe*Pressure Gradient*Mean Velocity)

Shear Stress given Friction Factor and Density

Go Shear Stress = Density of Fluid*Darcy Friction Factor*Mean Velocity*Mean Velocity/8

Total Required Power

Go Power = Pressure Gradient*Cross Sectional Area of Pipe*Mean Velocity*Length of Pipe

Density of Liquid using Mean Velocity given Shear Stress with Friction Factor

Go Density of Fluid = 8*Shear Stress/(Darcy Friction Factor*(Mean Velocity^2))

Shear Velocity

Go Shear Velocity = Mean Velocity*sqrt(Darcy Friction Factor/8)

Reynolds Number given Friction Factor

Go Reynolds Number = 64/Darcy Friction Factor

Reynolds Number given Friction Factor Formula

Reynolds Number = 64/Darcy Friction Factor
Re = 64/f

What is Reynolds Number ?

The Reynolds number helps predict flow patterns in different fluid flow situations. At low Reynolds numbers, flows tend to be dominated by laminar flow, while at high Reynolds numbers flows tend to be turbulent.

How to Calculate Reynolds Number given Friction Factor?

Reynolds Number given Friction Factor calculator uses Reynolds Number = 64/Darcy Friction Factor to calculate the Reynolds Number, The Reynolds Number given Friction Factor is defined as the ratio of inertia force per unit viscous force acting on the body in fluid. Reynolds Number is denoted by Re symbol.

How to calculate Reynolds Number given Friction Factor using this online calculator? To use this online calculator for Reynolds Number given Friction Factor, enter Darcy Friction Factor (f) and hit the calculate button. Here is how the Reynolds Number given Friction Factor calculation can be explained with given input values -> 12.8 = 64/5.

FAQ

What is Reynolds Number given Friction Factor?

The Reynolds Number given Friction Factor is defined as the ratio of inertia force per unit viscous force acting on the body in fluid and is represented as Re = 64/f or Reynolds Number = 64/Darcy Friction Factor. Darcy Friction Factor is denoted by f. Its value depends on the flow's Reynolds number Re and on the pipe's relative roughness ε / D. It can be obtained from Moody's chart.

How to calculate Reynolds Number given Friction Factor?

The Reynolds Number given Friction Factor is defined as the ratio of inertia force per unit viscous force acting on the body in fluid is calculated using Reynolds Number = 64/Darcy Friction Factor. To calculate Reynolds Number given Friction Factor, you need Darcy Friction Factor (f). With our tool, you need to enter the respective value for Darcy Friction Factor and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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