Friction Factor for Turbulent Flow in Duct Calculator

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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 [Re]

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✖Friction Factor in Duct is dimensionless number depending upon the surface of the duct.ⓘ Friction Factor for Turbulent Flow in Duct [f]

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Formula

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Friction Factor for Turbulent Flow in Duct

Formula

`"f" = 0.3164/"Re"^0.25`

Example

`"0.037627"=0.3164/("5000")^0.25`

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Friction Factor for Turbulent Flow in Duct Solution

STEP 0: Pre-Calculation Summary

Formula Used

Friction Factor in Duct = 0.3164/Reynolds Number^0.25
f = 0.3164/Re^0.25
This formula uses 2 Variables

Variables Used

Friction Factor in Duct - Friction Factor in Duct is dimensionless number depending upon the surface of the duct.
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.

STEP 1: Convert Input(s) to Base Unit

Reynolds Number: 5000 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

f = 0.3164/Re^0.25 --> 0.3164/5000^0.25

Evaluating ... ...

f = 0.0376265131186861

STEP 3: Convert Result to Output's Unit

0.0376265131186861 --> No Conversion Required

FINAL ANSWER

0.0376265131186861 ≈ 0.037627 <-- Friction Factor in Duct

(Calculation completed in 00.004 seconds)

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Vishwakarma Institute of Information Technology, Pune (VIIT Pune), Pune

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< 8 Basics of Ducts Calculators

Equivalent Diameter of Circular Duct for Rectangular Duct when Quantity of Air is Same

Go Equivalent Diameter of Duct = 1.256*((Longer Side^3*Shorter Side^3)/(Longer Side+Shorter Side))^0.2

Equivalent Diameter of Circular Duct for Rectangular Duct when Velocity of Air is Same

Go Equivalent Diameter of Duct = (2*Longer Side*Shorter Side)/(Longer Side+Shorter Side)

Reynolds Number in Duct

Go Reynolds Number = (Diameter of Circular Duct*Mean Velocity of Air)/Kinematic Viscosity

Quantity of Air given Velocity

Go Quantity of Air = Velocity of Air*Cross-Sectional Area of Duct

Velocity Pressure in Ducts

Go Velocity Pressure in Ducts = 0.6*Mean Velocity of Air^2

Friction Factor for Turbulent Flow in Duct

Go Friction Factor in Duct = 0.3164/Reynolds Number^0.25

Reynolds Number given Friction Factor for Laminar Flow

Go Reynolds Number = 64/Friction Factor in Duct

Friction Factor for Laminar Flow in Duct

Go Friction Factor in Duct = 64/Reynolds Number

Friction Factor for Turbulent Flow in Duct Formula

Friction Factor in Duct = 0.3164/Reynolds Number^0.25
f = 0.3164/Re^0.25

What is Friction Factor?

The friction factor in the duct is a dimensionless number depending upon the surface of the duct. It is representing the loss of pressure of a fluid in a duct due to the interactions between the fluid and the duct.

How to Calculate Friction Factor for Turbulent Flow in Duct?

Friction Factor for Turbulent Flow in Duct calculator uses Friction Factor in Duct = 0.3164/Reynolds Number^0.25 to calculate the Friction Factor in Duct, The Friction Factor for Turbulent Flow in Duct formula is a dimensionless number depending upon the surface of the duct. Friction Factor in Duct is denoted by f symbol.

How to calculate Friction Factor for Turbulent Flow in Duct using this online calculator? To use this online calculator for Friction Factor for Turbulent Flow in Duct, enter Reynolds Number (Re) and hit the calculate button. Here is how the Friction Factor for Turbulent Flow in Duct calculation can be explained with given input values -> 0.037627 = 0.3164/5000^0.25.

FAQ

What is Friction Factor for Turbulent Flow in Duct?

The Friction Factor for Turbulent Flow in Duct formula is a dimensionless number depending upon the surface of the duct and is represented as f = 0.3164/Re^0.25 or Friction Factor in Duct = 0.3164/Reynolds Number^0.25. 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.

How to calculate Friction Factor for Turbulent Flow in Duct?

The Friction Factor for Turbulent Flow in Duct formula is a dimensionless number depending upon the surface of the duct is calculated using Friction Factor in Duct = 0.3164/Reynolds Number^0.25. To calculate Friction Factor for Turbulent Flow in Duct, you need Reynolds Number (Re). With our tool, you need to enter the respective value for Reynolds Number and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Friction Factor in Duct?

In this formula, Friction Factor in Duct uses Reynolds Number. We can use 1 other way(s) to calculate the same, which is/are as follows -

Friction Factor in Duct = 64/Reynolds Number

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