Skin Friction Coefficient Calculator

✖The Reynolds number is the ratio of inertial forces to viscous forces. The Reynolds number is used to determine whether a fluid is laminar or turbulent.ⓘ Reynolds Number [Re]

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✖The skin friction coefficient is an important dimensionless parameter in boundary-layer flows. It specifies the fraction of the local dynamic pressure.ⓘ Skin Friction Coefficient [C_f]

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Formula

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Skin Friction Coefficient

Formula

`"C"_{"f"} = (2*log10("Re")-0.65)^(-2.30)`

Example

`"0.014483"=(2*log10("3000")-0.65)^(-2.30)`

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Skin Friction Coefficient Solution

STEP 0: Pre-Calculation Summary

Formula Used

Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30)
C_f = (2*log10(Re)-0.65)^(-2.30)
This formula uses 1 Functions, 2 Variables

Functions Used

log10 - The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function., log10(Number)

Variables Used

Skin friction coefficient - The 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. The Reynolds number is used to determine whether a fluid is laminar or turbulent.

STEP 1: Convert Input(s) to Base Unit

Reynolds Number: 3000 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

C_f = (2*log10(Re)-0.65)^(-2.30) --> (2*log10(3000)-0.65)^(-2.30)

Evaluating ... ...

C_f = 0.0144825255877397

STEP 3: Convert Result to Output's Unit

0.0144825255877397 --> No Conversion Required

FINAL ANSWER

0.0144825255877397 ≈ 0.014483 <-- Skin friction coefficient

(Calculation completed in 00.004 seconds)

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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 Computational Fluid Dyanmics Calculators

Drag on Airfoil

Go Drag on Airfoil = Normal Force on Airfoil*sin(Angle of Attack of Airfoil)+Axial Force on airfoil*cos(Angle of Attack of Airfoil)

Lift on Airfoil

Go Lift on Airfoil = Normal Force on Airfoil*cos(Angle of Attack of Airfoil)-Axial Force on airfoil*sin(Angle of Attack of Airfoil)

Reynolds Number for Airfoil

Go Reynolds Number = (Density of Fluid*Flow Velocity*Chord Length of Airfoil)/Dynamic Viscosity

Wall Shear Stress for Airfoil

Go Wall Shear Stress for Airfoil = 0.5*Skin friction coefficient*Flow Velocity^2*Density of Air

Y Plus

Go Y Plus = (First layer height*Friction Velocity for Airfoil)/Kinematic Viscosity

Friction Velocity for Airfoil

Go Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of Air)^0.5

Skin Friction Coefficient

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

Skin Friction Coefficient Formula

Skin friction coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30)
C_f = (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 C_f 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(3000)-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 C_f = (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. The Reynolds number is used to determine whether a fluid is laminar or turbulent.

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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