Skin friction coefficient Solution

STEP 0: Pre-Calculation Summary
Formula Used
Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30)
cf = (2*log10(Re)-0.65)^(-2.30)
This formula uses 1 Functions, 2 Variables
Functions Used
log10 - Common logarithm function (base 10), log10(Number)
Variables Used
Skin friction coefficient - Skin friction coefficient is an important dimensionless parameter in boundary-layer flows. It specifies the fraction of the local dynamic pressure.
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.
STEP 1: Convert Input(s) to Base Unit
Reynolds Number: 5000 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
cf = (2*log10(Re)-0.65)^(-2.30) --> (2*log10(5000)-0.65)^(-2.30)
Evaluating ... ...
cf = 0.0123852908639912
STEP 3: Convert Result to Output's Unit
0.0123852908639912 --> No Conversion Required
FINAL ANSWER
0.0123852908639912 <-- Skin friction coefficient
(Calculation completed in 00.001 seconds)

Credits

Created by Vishal Anand
Indian Institute of Technology Kharagpur (IIT KGP), Kharagpur
Vishal Anand has created this Calculator and 7 more calculators!
Verified by Ojas Kulkarni
Sardar Patel College of Engineering (SPCE), Mumbai
Ojas Kulkarni has verified this Calculator and 8 more calculators!

7 CFD- Computational Fluid Dyanmics Calculators

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Lift on airfoil
Lift on Airfoil = Normal Force on Airfoil*cos(Angle of Attack of Airfoil)-Axial Force on airfoil*sin(Angle of Attack of Airfoil) Go
Reynolds Number for airfoil
Reynolds Number = (Density of Fluid*Flow Velocity*Chord Length of Airfoil)/Dynamic Viscosity Go
Y plus
Y Plus = First layer height*Density of air*Friction Velocity for Airfoil/Kinematic viscosity Go
Wall Shear Stress for airfoil
Wall Shear Stress for Airfoil = 0.5*Skin friction coefficient*Flow Velocity*Density of air Go
Friction Velocity for airfoil
Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of air)^0.5 Go
Skin friction coefficient
Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30) Go

Skin friction coefficient Formula

Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30)
cf = (2*log10(Re)-0.65)^(-2.30)

How to Calculate Skin friction coefficient?

Skin friction coefficient calculator uses Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30) to calculate the Skin friction coefficient, The Skin friction coefficient is a dimensionless skin shear stress which is nondimensionalized by the dynamic pressure of a free stream. Skin friction coefficient is denoted by cf symbol.

How to calculate Skin friction coefficient using this online calculator? To use this online calculator for Skin friction coefficient, enter Reynolds Number (Re) and hit the calculate button. Here is how the Skin friction coefficient calculation can be explained with given input values -> 0.012385 = (2*log10(5000)-0.65)^(-2.30).

FAQ

What is Skin friction coefficient?
The Skin friction coefficient is a dimensionless skin shear stress which is nondimensionalized by the dynamic pressure of a free stream and is represented as cf = (2*log10(Re)-0.65)^(-2.30) or Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30). 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.
How to calculate Skin friction coefficient?
The Skin friction coefficient is a dimensionless skin shear stress which is nondimensionalized by the dynamic pressure of a free stream is calculated using Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30). To calculate Skin friction coefficient, 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.
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