Average friction coefficient Calculator

✖The Average Friction Coefficient is the average value of the relative ease of initiating or sustaining relative motion between two, usually solid, bodies that are being pressed together.ⓘ Average friction coefficient [C_fL]

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Formula

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Average friction coefficient

Formula

`("C"_{"f"}"L") = 1.328*"Re"_{"x"}^(-0.5)`

Example

`"0.460567"=1.328*("8.314")^(-0.5)`

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Average friction coefficient Solution

STEP 0: Pre-Calculation Summary

Formula Used

Average Friction Coefficient = 1.328*Reynolds Number(x)^(-0.5)
C_fL = 1.328*Re_x^(-0.5)
This formula uses 2 Variables

Variables Used

Average Friction Coefficient - The Average Friction Coefficient is the average value of the relative ease of initiating or sustaining relative motion between two, usually solid, bodies that are being pressed together.
Reynolds Number(x) - Reynolds number(x) at a distance X from the leading edge.

STEP 1: Convert Input(s) to Base Unit

Reynolds Number(x): 8.314 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

C_fL = 1.328*Re_x^(-0.5) --> 1.328*8.314^(-0.5)

Evaluating ... ...

C_fL = 0.460567262744703

STEP 3: Convert Result to Output's Unit

0.460567262744703 --> No Conversion Required

FINAL ANSWER

0.460567262744703 ≈ 0.460567 <-- Average Friction Coefficient

(Calculation completed in 00.004 seconds)

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Home » Physics » Heat and Mass Transfer » External flow » Flow over Flat Plate » Laminar Flow » Average friction coefficient

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Created by Nishan Poojary

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

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University Institute of Technology RGPV (UIT - RGPV), Bhopal

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< 15 Laminar Flow Calculators

Average temperature difference between plate and fluid

Go Average Temperature Difference = ((Heat Flux*Distance L/Thermal Conductivity))/(0.679*(Reynolds Number at Location L^0.5)*(Prandtl Number^0.333))

Free stream velocity given local friction coefficient

Go Free Stream Velocity = sqrt((2*Wall Shear Stress)/(Density*Local Friction Coefficient))

Density given local friction coefficient

Go Density = 2*Wall Shear Stress/(Local Friction Coefficient*(Free Stream Velocity^2))

Wall shear stress

Go Wall Shear Stress = (Local Friction Coefficient*Density*(Free Stream Velocity^2))/2

Local friction coefficient for external flow

Go Local Friction Coefficient = 2*Wall Shear Stress/(Density*Free Stream Velocity^2)

Hydrodynamic boundary layer thickness at distance X from leading edge

Go Hydrodynamic Boundary Layer Thickness = 5*Distance from Point to YY Axis*Reynolds Number(x)^(-0.5)

Thermal boundary layer thickness at distance X from leading edge

Go Thermal Boundary Layer Thickness = Hydrodynamic Boundary Layer Thickness*Prandtl Number^(-0.333)

Film temperature

Go Film temperature = (Plate Surface Temperature+Free Stream Fluid Temperature)/2

Free stream fluid temperature

Go Free Stream Fluid Temperature = 2*Film temperature-Plate Surface Temperature

Plate surface temperature

Go Plate Surface Temperature = 2*Film temperature-Free Stream Fluid Temperature

Coefficient of friction given Stanton number

Go Coefficient of Friction = 2*Stanton Number*(Prandtl Number^(2/3))

Displacement thickness

Go Displacement Thickness = Hydrodynamic Boundary Layer Thickness/3

Average friction coefficient

Go Average Friction Coefficient = 1.328*Reynolds Number(x)^(-0.5)

Local Friction Coefficient given Reynolds Number

Go Local Friction Coefficient = 0.664*Reynolds Number(x)^(-0.5)

Momentum thickness

Go Momentum Thickness = Hydrodynamic Boundary Layer Thickness/7

Average friction coefficient Formula

Average Friction Coefficient = 1.328*Reynolds Number(x)^(-0.5)
C_fL = 1.328*Re_x^(-0.5)

What is external flow

In fluid mechanics, external flow is such a flow that boundary layers develop freely, without constraints imposed by adjacent surfaces. Accordingly, there will always exist a region of the flow outside the boundary layer in which velocity, temperature, and/or concentration gradients are negligible. It can be defined as the flow of a fluid around a body that is completely submerged in it.

An example includes fluid motion over a flat plate (inclined or parallel to the free stream velocity) and flow over curved surfaces such as a sphere, cylinder, airfoil, or turbine blade, air flowing around an airplane and water flowing around the submarines.

How to Calculate Average friction coefficient?

Average friction coefficient calculator uses Average Friction Coefficient = 1.328*Reynolds Number(x)^(-0.5) to calculate the Average Friction Coefficient, The Average friction coefficient formula is defined as the average of the ratio of the force required to move tow sliding surfaces over each other, and the force holding them together. Average Friction Coefficient is denoted by C_fL symbol.

How to calculate Average friction coefficient using this online calculator? To use this online calculator for Average friction coefficient, enter Reynolds Number(x) (Re_x) and hit the calculate button. Here is how the Average friction coefficient calculation can be explained with given input values -> 0.460567 = 1.328*8.314^(-0.5).

FAQ

What is Average friction coefficient?

The Average friction coefficient formula is defined as the average of the ratio of the force required to move tow sliding surfaces over each other, and the force holding them together and is represented as C_fL = 1.328*Re_x^(-0.5) or Average Friction Coefficient = 1.328*Reynolds Number(x)^(-0.5). Reynolds number(x) at a distance X from the leading edge.

How to calculate Average friction coefficient?

The Average friction coefficient formula is defined as the average of the ratio of the force required to move tow sliding surfaces over each other, and the force holding them together is calculated using Average Friction Coefficient = 1.328*Reynolds Number(x)^(-0.5). To calculate Average friction coefficient, you need Reynolds Number(x) (Re_x). With our tool, you need to enter the respective value for Reynolds Number(x) 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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