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Local Skin-Friction Coefficient Formula

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Local Skin-Friction Coefficient specifies the fraction of the local dynamic pressure. Check FAQs

C f = \frac{2 \cdot 𝜏}{ρ e \cdot {u e}^{2}}

C_f - Local Skin-Friction Coefficient?𝜏 - Shear Stress?ρ_e - Static Density?u_e - Static Velocity?

Local Skin-Friction Coefficient Example

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

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

Here is how the Local Skin-Friction Coefficient equation looks like.

0.0013 = \frac{2 \cdot 61}{1200 \cdot {8.8}^{2}}

0.0013 = \frac{2 \cdot 61Pa}{1200kg/m³ \cdot {8.8m/s}^{2}}

0.0013 = \frac{2 \cdot 61}{1200 \cdot {8.8}^{2}}

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Local Skin-Friction Coefficient Solution

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

FIRST Step Consider the formula

C f = \frac{2 \cdot 𝜏}{ρ e \cdot {u e}^{2}}

Next Step Substitute values of Variables

∴

C f = \frac{2 \cdot 61Pa}{1200kg/m³ \cdot {8.8m/s}^{2}}

Next Step Prepare to Evaluate

∴

C f = \frac{2 \cdot 61}{1200 \cdot {8.8}^{2}}

Next Step Evaluate

∴

C f = 0.00131284435261708

LAST Step Rounding Answer

∴

C f = 0.0013

Local Skin-Friction Coefficient Formula Elements

Variables

Local Skin-Friction Coefficient

Local Skin-Friction Coefficient specifies the fraction of the local dynamic pressure.

Symbol: C_f

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Local Skin-Friction Coefficient

Shear Stress

Shear Stress is force tending to cause deformation of a material by slippage along a plane or planes parallel to the imposed stress.

Symbol: 𝜏

Measurement: StressUnit: Pa

Note: Value should be greater than 0.

Formulas to find Shear Stress

Static Density

Static density, is the density of the fluid when its not moving, or the density of fluid if we are moving relative to the fluid.

Symbol: ρ_e

Measurement: DensityUnit: kg/m³

Note: Value should be greater than 0.

Formulas to find Static Density

Static Velocity

Static velocity is the velocity of fluid at a point in the fluid, or velocity in the continuous flow.

Symbol: u_e

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Static Velocity

Other formulas in Hypersonic Flow Parameters category

Go Local Shear Stress at Wall

𝜏 = 0.5 \cdot C f \cdot ρ e \cdot {μe}^{2}

Go Static Density Equation using Skin Friction Coefficient

ρ e = \frac{2 \cdot 𝜏}{C f \cdot {u e}^{2}}

Go Static Velocity Equation using Skin Friction Coefficient

u e = \sqrt{\frac{2 \cdot 𝜏}{C f \cdot ρ e}}

Go Skin Friction Coefficient for Incompressible Flow

c f = \frac{0.664}{\sqrt{Re}}

How to Evaluate Local Skin-Friction Coefficient?

Local Skin-Friction Coefficient evaluator uses Local Skin-Friction Coefficient = (2*Shear Stress)/(Static Density*Static Velocity^2) to evaluate the Local Skin-Friction Coefficient, Local Skin-Friction Coefficient is defined as the ratio of double the local shear stress to the product of static density and square of the static velocity. Local Skin-Friction Coefficient is denoted by C_f symbol.

How to evaluate Local Skin-Friction Coefficient using this online evaluator? To use this online evaluator for Local Skin-Friction Coefficient, enter Shear Stress (𝜏), Static Density (ρ_e) & Static Velocity (u_e) and hit the calculate button.

FAQs on Local Skin-Friction Coefficient

What is the formula to find Local Skin-Friction Coefficient?

The formula of Local Skin-Friction Coefficient is expressed as Local Skin-Friction Coefficient = (2*Shear Stress)/(Static Density*Static Velocity^2). Here is an example- 0.001313 = (2*61)/(1200*8.8^2).

How to calculate Local Skin-Friction Coefficient?

With Shear Stress (𝜏), Static Density (ρ_e) & Static Velocity (u_e) we can find Local Skin-Friction Coefficient using the formula - Local Skin-Friction Coefficient = (2*Shear Stress)/(Static Density*Static Velocity^2).

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Local Skin-Friction Coefficient Formula

Local Skin-Friction Coefficient Example

Local Skin-Friction Coefficient Solution

Local Skin-Friction Coefficient Formula Elements

Other formulas in Hypersonic Flow Parameters category

How to Evaluate Local Skin-Friction Coefficient?

FAQs on Local Skin-Friction Coefficient

Variable Name