Reynolds Number given Darcy Friction Factor Calculator

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✖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 [df]

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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. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.ⓘ Reynolds Number given Darcy Friction Factor [Re]

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Formula

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Reynolds Number given Darcy Friction Factor

Formula

`"Re" = 64/"df"`

Example

`"128"=64/"0.5"`

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Reynolds Number given Darcy Friction Factor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Reynolds Number = 64/Darcy Friction Factor
Re = 64/df
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. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.
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: 0.5 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Re = 64/df --> 64/0.5

Evaluating ... ...

Re = 128

STEP 3: Convert Result to Output's Unit

128 --> No Conversion Required

FINAL ANSWER

128 <-- Reynolds Number

(Calculation completed in 00.004 seconds)

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< 15 Laminar Flow Calculators

Nusselt Number by Sieder-Tate for Shorter Tubes

Go Nusselt Number = ((1.86)*((Reynolds Number)^(1/3))* ((Prandtl Number)^(1/3))* ((Diameter of Tube/Length of Cylinder)^(1/3))* ((Fluid Viscosity (at fluid bulk temperature)/Fluid Viscosity (At pipe wall temperature))^(0.14)))

Nusselt number for hydrodynamic length fully developed and thermal length still developing

Go Nusselt Number = 3.66+((0.0668*(Diameter/Length)*Reynolds Number Dia*Prandtl Number)/(1+0.04*((Diameter/Length)*Reynolds Number Dia*Prandtl Number)^0.67))

Nusselt number for simultaneous development of hydrodynamic and thermal layers

Go Nusselt Number = 3.66+((0.104*(Reynolds Number Dia*Prandtl Number*(Diameter/Length)))/(1+0.16*(Reynolds Number Dia*Prandtl Number*(Diameter/Length))^0.8))

Nusselt number for simultaneous development of hydrodynamic and thermal layers for liquids

Go Nusselt Number = 1.86*(((Reynolds Number Dia*Prandtl Number)/(Length/Diameter))^0.333)*(Dynamic Viscosity at Bulk Temperature/Dynamic Viscosity at Wall Temperature)^0.14

Nusselt number for short tube thermal development

Go Nusselt Number = 1.30*((Reynolds Number Dia*Prandtl Number)/(Length/Diameter))^0.333

Nusselt number for short lengths

Go Nusselt Number = 1.67*(Reynolds Number Dia*Prandtl Number*Diameter/Length)^0.333

Diameter of thermal entry tube

Go Diameter = Length/(0.04*Reynolds Number Dia*Prandtl Number)

Thermal entry length

Go Length = 0.04*Reynolds Number Dia*Diameter*Prandtl Number

Stanton number for Colburn analogy

Go Stanton Number = Darcy Friction Factor/(8*(Prandtl Number^0.67))

Darcy friction factor for Colburn analogy

Go Darcy Friction Factor = 8*Stanton Number*Prandtl Number^0.67

Colburn's j-factor

Go Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3)

Diameter of hydrodynamic entry tube

Go Diameter = Length/(0.04*Reynolds Number Dia)

Hydrodynamic entry length

Go Length = 0.04*Diameter*Reynolds Number Dia

Darcy friction factor

Go Darcy Friction Factor = 64/Reynolds Number Dia

Reynolds Number given Darcy Friction Factor

Go Reynolds Number = 64/Darcy Friction Factor

Reynolds Number given Darcy Friction Factor Formula

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

What is internal flow?

internal flow is a flow for which the fluid is confined by a surface. Hence the boundary layer is unable to develop without eventually being constrained. The internal flow configuration represents a convenient geometry for heating and cooling fluids used in chemical processing, environmental control, and energy conversion technologies.

An example includes flow in a pipe.

How to Calculate Reynolds Number given Darcy Friction Factor?

Reynolds Number given Darcy Friction Factor calculator uses Reynolds Number = 64/Darcy Friction Factor to calculate the Reynolds Number, The Reynolds Number given Darcy Friction Factor formula is defined as a dimensionless quantity that is used to determine the type of flow pattern as laminar or turbulent while flowing through a pipe. Reynolds Number is denoted by Re symbol.

How to calculate Reynolds Number given Darcy Friction Factor using this online calculator? To use this online calculator for Reynolds Number given Darcy Friction Factor, enter Darcy Friction Factor (df) and hit the calculate button. Here is how the Reynolds Number given Darcy Friction Factor calculation can be explained with given input values -> 128 = 64/0.5.

FAQ

What is Reynolds Number given Darcy Friction Factor?

The Reynolds Number given Darcy Friction Factor formula is defined as a dimensionless quantity that is used to determine the type of flow pattern as laminar or turbulent while flowing through a pipe and is represented as Re = 64/df 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 Darcy Friction Factor?

The Reynolds Number given Darcy Friction Factor formula is defined as a dimensionless quantity that is used to determine the type of flow pattern as laminar or turbulent while flowing through a pipe is calculated using Reynolds Number = 64/Darcy Friction Factor. To calculate Reynolds Number given Darcy Friction Factor, you need Darcy Friction Factor (df). 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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