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Skin Friction Coefficient Formula

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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. Check FAQs

C f = {(2 \cdot \log 10 (Re) - 0.65)}^{- 2.30}

C_f - Skin Friction Coefficient?Re - Reynolds Number?

Skin Friction Coefficient Example

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Here is how the Skin Friction Coefficient equation looks like with Values.

Here is how the Skin Friction Coefficient equation looks like with Units.

Here is how the Skin Friction Coefficient equation looks like.

0.0145 = {(2 \cdot \log 10 (3000) - 0.65)}^{- 2.30}

0.0145 = {(2 \cdot \log 10 (3000) - 0.65)}^{- 2.30}

0.0145 = {(2 \cdot \log 10 (3000) - 0.65)}^{- 2.30}

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Skin Friction Coefficient Solution

Follow our step by step solution on how to calculate Skin Friction Coefficient?

FIRST Step Consider the formula

C f = {(2 \cdot \log 10 (Re) - 0.65)}^{- 2.30}

Next Step Substitute values of Variables

∴

C f = {(2 \cdot \log 10 (3000) - 0.65)}^{- 2.30}

Next Step Prepare to Evaluate

∴

C f = {(2 \cdot \log 10 (3000) - 0.65)}^{- 2.30}

Next Step Evaluate

∴

C f = 0.0144825255877397

LAST Step Rounding Answer

∴

C f = 0.0145

Skin Friction Coefficient Formula Elements

Variables

Functions

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.

Symbol: C_f

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Skin Friction Coefficient

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.

Symbol: Re

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Reynolds Number

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.

Syntax: log10(Number)

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Go Reynolds Number for Airfoil

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How to Evaluate Skin Friction Coefficient?

Skin Friction Coefficient evaluator uses Skin Friction Coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30) to evaluate 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 evaluate Skin Friction Coefficient using this online evaluator? To use this online evaluator for Skin Friction Coefficient, enter Reynolds Number (Re) and hit the calculate button.

FAQs on Skin Friction Coefficient

What is the formula to find Skin Friction Coefficient?

The formula of Skin Friction Coefficient is expressed as Skin Friction Coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30). Here is an example- 0.014483 = (2*log10(3000)-0.65)^(-2.30).

How to calculate Skin Friction Coefficient?

With Reynolds Number (Re) we can find Skin Friction Coefficient using the formula - Skin Friction Coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30). This formula also uses Common Logarithm (log10) function(s).

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