Local friction coefficient Solution

STEP 0: Pre-Calculation Summary
Formula Used
Local Friction Coefficient = 0.0592*(Reynolds Number(x)^(-0.2))
Cfx = 0.0592*(Rex^(-0.2))
This formula uses 2 Variables
Variables Used
Local Friction Coefficient - Local Friction Coefficient for the flow in ducts is the ratio of wall shearing stress and dynamic head of the stream.
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
Cfx = 0.0592*(Rex^(-0.2)) --> 0.0592*(8.314^(-0.2))
Evaluating ... ...
Cfx = 0.0387578522400504
STEP 3: Convert Result to Output's Unit
0.0387578522400504 --> No Conversion Required
FINAL ANSWER
0.0387578522400504 0.038758 <-- Local Friction Coefficient
(Calculation completed in 00.020 seconds)

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Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi
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11 Turbulent Flow Calculators

Nusselt Number at Distance X from Leading Edge by Analogy
Go Nusselt Number(x) = ((Local Friction Coefficient/2)*Reynolds Number(x)*Prandtl Number)/(1+12.8*((Local Friction Coefficient/2)^.5)*((Prandtl Number^0.68)-1))
Local shear stress
Go Wall Shear Stress = (0.0296*Density of Fluid*(Free Stream Velocity)^2)/((Local Reynolds Number)^(0.2))
Hydrodynamic boundary layer thickness at X
Go Hydrodynamic Boundary Layer Thickness = 0.381*Distance from Leading Edge*(Reynolds Number^(-0.2))
Average Nusselt number upto length L given Reynolds number
Go Average Nusselt Number = 0.037*(Reynolds Number^0.8)*(Prandtl Number^0.33)
Nusselt number at distance x from leading edge
Go Nusselt Number(x) = 0.0296*(Reynolds Number(x)^0.8)*(Prandtl Number^0.33)
Local friction coefficient for Re greater than 100000000
Go Local Friction Coefficient = 0.37*(log10(Reynolds Number(x)))^(-2.584)
Hydrodynamic boundary layer thickness at X given momentum thickness
Go Hydrodynamic Boundary Layer Thickness = (72/7)*Momentum Thickness
Momentum thickness at X
Go Momentum Thickness = (7/72)*Hydrodynamic Boundary Layer Thickness
Hydrodynamic boundary layer thickness given displacement thickness
Go Hydrodynamic Boundary Layer Thickness = 8*Displacement Thickness
Displacement thickness at X
Go Displacement Thickness = Hydrodynamic Boundary Layer Thickness/8
Local friction coefficient
Go Local Friction Coefficient = 0.0592*(Reynolds Number(x)^(-0.2))

Local friction coefficient Formula

Local Friction Coefficient = 0.0592*(Reynolds Number(x)^(-0.2))
Cfx = 0.0592*(Rex^(-0.2))

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 Local friction coefficient?

Local friction coefficient calculator uses Local Friction Coefficient = 0.0592*(Reynolds Number(x)^(-0.2)) to calculate the Local Friction Coefficient, The Local friction coefficient formula is defined as the ratio between local shear stress to characteristic dynamics pressure. Local Friction Coefficient is denoted by Cfx symbol.

How to calculate Local friction coefficient using this online calculator? To use this online calculator for Local friction coefficient, enter Reynolds Number(x) (Rex) and hit the calculate button. Here is how the Local friction coefficient calculation can be explained with given input values -> 0.038758 = 0.0592*(8.314^(-0.2)).

FAQ

What is Local friction coefficient?
The Local friction coefficient formula is defined as the ratio between local shear stress to characteristic dynamics pressure and is represented as Cfx = 0.0592*(Rex^(-0.2)) or Local Friction Coefficient = 0.0592*(Reynolds Number(x)^(-0.2)). Reynolds number(x) at a distance X from the leading edge.
How to calculate Local friction coefficient?
The Local friction coefficient formula is defined as the ratio between local shear stress to characteristic dynamics pressure is calculated using Local Friction Coefficient = 0.0592*(Reynolds Number(x)^(-0.2)). To calculate Local friction coefficient, you need Reynolds Number(x) (Rex). 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.
How many ways are there to calculate Local Friction Coefficient?
In this formula, Local Friction Coefficient uses Reynolds Number(x). We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Local Friction Coefficient = 0.37*(log10(Reynolds Number(x)))^(-2.584)
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