Friction factor for rough tubes Calculator

✖The Surface Roughness is a measure of the texture of a surface, indicating how smooth or rough it is, which can affect fluid flow and heat transfer.ⓘ Surface Roughness [e]			+10% -10%
✖The Diameter is the straight line passing through the center of a circle or tube, connecting two points on its boundary, crucial for understanding flow characteristics in turbulent systems.ⓘ Diameter [D]			+10% -10%
✖The Reynolds Number is a dimensionless quantity that helps predict flow patterns in different fluid flow situations, particularly in determining whether the flow is laminar or turbulent.ⓘ Reynolds Number [Re]			+10% -10%

✖The Friction Factor is a dimensionless number that quantifies the resistance to flow in a pipe due to friction, particularly in turbulent flow conditions.ⓘ Friction factor for rough tubes [f]

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Friction factor for rough tubes Solution

STEP 0: Pre-Calculation Summary

Formula Used

Friction Factor = 1.325/((ln((Surface Roughness/3.7*Diameter)+(5.74/(Reynolds Number^0.9))))^2)
f = 1.325/((ln((e/3.7*D)+(5.74/(Re^0.9))))^2)
This formula uses 1 Functions, 4 Variables

Functions Used

ln - The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function., ln(Number)

Variables Used

Friction Factor - The Friction Factor is a dimensionless number that quantifies the resistance to flow in a pipe due to friction, particularly in turbulent flow conditions.
Surface Roughness - The Surface Roughness is a measure of the texture of a surface, indicating how smooth or rough it is, which can affect fluid flow and heat transfer.
Diameter - (Measured in Meter) - The Diameter is the straight line passing through the center of a circle or tube, connecting two points on its boundary, crucial for understanding flow characteristics in turbulent systems.
Reynolds Number - The Reynolds Number is a dimensionless quantity that helps predict flow patterns in different fluid flow situations, particularly in determining whether the flow is laminar or turbulent.

STEP 1: Convert Input(s) to Base Unit

Surface Roughness: 0.0004 --> No Conversion Required
Diameter: 10 Meter --> 10 Meter No Conversion Required
Reynolds Number: 5000 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

f = 1.325/((ln((e/3.7*D)+(5.74/(Re^0.9))))^2) --> 1.325/((ln((0.0004/3.7*10)+(5.74/(5000^0.9))))^2)

Evaluating ... ...

f = 0.0425508620777238

STEP 3: Convert Result to Output's Unit

0.0425508620777238 --> No Conversion Required

FINAL ANSWER

0.0425508620777238 ≈ 0.042551 <-- Friction Factor

(Calculation completed in 00.004 seconds)

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Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi

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< Turbulent Flow Calculators

Friction factor for rough tubes

LaTeX Go Friction Factor = 1.325/((ln((Surface Roughness/3.7*Diameter)+(5.74/(Reynolds Number^0.9))))^2)

Friction factor for Re greater than 2300

LaTeX Go Friction Factor = 0.25*(1.82*log10(Reynolds Number Dia)-1.64)^-2

Friction factor for Re greater than 10000

LaTeX Go Friction Factor = 0.184*Reynolds Number Dia^(-0.2)

Friction factor for transitional turbulent flow

LaTeX Go Friction Factor = 0.316*Reynolds Number Dia^-0.25

Friction factor for rough tubes Formula

LaTeX Go

Friction Factor = 1.325/((ln((Surface Roughness/3.7*Diameter)+(5.74/(Reynolds Number^0.9))))^2)
f = 1.325/((ln((e/3.7*D)+(5.74/(Re^0.9))))^2)

What is Friction Factor?

The friction factor is a dimensionless quantity used in fluid mechanics to quantify the resistance or frictional losses encountered by a fluid flowing through a pipe or channel. It depends on the flow regime (laminar or turbulent), the Reynolds number, and the roughness of the pipe’s surface. The friction factor is critical in calculating pressure drops and energy losses in fluid systems, aiding in the efficient design of pipelines and hydraulic systems.

How to Calculate Friction factor for rough tubes?

Friction factor for rough tubes calculator uses Friction Factor = 1.325/((ln((Surface Roughness/3.7*Diameter)+(5.74/(Reynolds Number^0.9))))^2) to calculate the Friction Factor, The Friction factor for rough tubes formula is defined as the loss of pressure of a fluid in a pipe due to the interactions in between the fluid and the pipe. Friction Factor is denoted by f symbol.

How to calculate Friction factor for rough tubes using this online calculator? To use this online calculator for Friction factor for rough tubes, enter Surface Roughness (e), Diameter (D) & Reynolds Number (Re) and hit the calculate button. Here is how the Friction factor for rough tubes calculation can be explained with given input values -> 0.041439 = 1.325/((ln((0.0004/3.7*10)+(5.74/(5000^0.9))))^2).

FAQ

What is Friction factor for rough tubes?

The Friction factor for rough tubes formula is defined as the loss of pressure of a fluid in a pipe due to the interactions in between the fluid and the pipe and is represented as f = 1.325/((ln((e/3.7*D)+(5.74/(Re^0.9))))^2) or Friction Factor = 1.325/((ln((Surface Roughness/3.7*Diameter)+(5.74/(Reynolds Number^0.9))))^2). The Surface Roughness is a measure of the texture of a surface, indicating how smooth or rough it is, which can affect fluid flow and heat transfer, The Diameter is the straight line passing through the center of a circle or tube, connecting two points on its boundary, crucial for understanding flow characteristics in turbulent systems & The Reynolds Number is a dimensionless quantity that helps predict flow patterns in different fluid flow situations, particularly in determining whether the flow is laminar or turbulent.

How to calculate Friction factor for rough tubes?

The Friction factor for rough tubes formula is defined as the loss of pressure of a fluid in a pipe due to the interactions in between the fluid and the pipe is calculated using Friction Factor = 1.325/((ln((Surface Roughness/3.7*Diameter)+(5.74/(Reynolds Number^0.9))))^2). To calculate Friction factor for rough tubes, you need Surface Roughness (e), Diameter (D) & Reynolds Number (Re). With our tool, you need to enter the respective value for Surface Roughness, Diameter & 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 this formula, Friction Factor uses Surface Roughness, Diameter & Reynolds Number. We can use 3 other way(s) to calculate the same, which is/are as follows -

Friction Factor = 0.25*(1.82*log10(Reynolds Number Dia)-1.64)^-2
Friction Factor = 0.184*Reynolds Number Dia^(-0.2)
Friction Factor = 0.316*Reynolds Number Dia^-0.25

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