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Local skin friction coefficient Formula

GoLocal skin friction coefficient given Stanton Number Formula

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

C f = \frac{2 \cdot h x}{ρ fluid \cdot c \cdot u ∞}

C_f - Local Skin-Friction Coefficient?h_x - Local Heat Transfer Coefficient?ρ_fluid - Density of Fluid?c - Specific Heat Capacity?u_∞ - Free Stream 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.

0.0028 = \frac{2 \cdot 500}{1.225 \cdot 4.184 \cdot 70}

0.0028 = \frac{2 \cdot 500W/m²*K}{1.225kg/m³ \cdot 4.184kJ/kg*K \cdot 70m/s}

0.0028 = \frac{2 \cdot 500}{1.225 \cdot 4.184 \cdot 70}

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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 h x}{ρ fluid \cdot c \cdot u ∞}

Next Step Substitute values of Variables

∴

C f = \frac{2 \cdot 500W/m²*K}{1.225kg/m³ \cdot 4.184kJ/kg*K \cdot 70m/s}

Next Step Convert Units

∴

C f = \frac{2 \cdot 500W/m²*K}{1.225kg/m³ \cdot 4184J/(kg*K) \cdot 70m/s}

Next Step Prepare to Evaluate

∴

C f = \frac{2 \cdot 500}{1.225 \cdot 4184 \cdot 70}

Next Step Evaluate

∴

C f = 0.00278723890539554

LAST Step Rounding Answer

∴

C f = 0.0028

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

Local Heat Transfer Coefficient

Local heat transfer coefficient at a particular point on the heat-transfer surface, equal to the local heat flux at this point divided by the local temperature drop.

Symbol: h_x

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value can be positive or negative.

Formulas to find Local Heat Transfer Coefficient

Density of Fluid

Density of Fluid is defined as the mass of fluid per unit volume of the said fluid.

Symbol: ρ_fluid

Measurement: DensityUnit: kg/m³

Note: Value should be greater than 0.

Formulas to find Density of Fluid

Specific Heat Capacity

Specific Heat Capacity is the heat required to raise the temperature of the unit mass of a given substance by a given amount.

Symbol: c

Measurement: Specific Heat CapacityUnit: kJ/kg*K

Note: Value can be positive or negative.

Formulas to find Specific Heat Capacity

Free Stream Velocity

Free Stream Velocity is defined as at some distance above the boundary the velocity reaches a constant value that is free stream velocity.

Symbol: u_∞

Measurement: SpeedUnit: m/s

Note: Value can be positive or negative.

Formulas to find Free Stream Velocity

Other Formulas to find Local Skin-Friction Coefficient

Go Local skin friction coefficient given Stanton Number

C f = 2 \cdot St

Other formulas in Reynolds Analogy category

Go Local heat transfer coefficient

h x = \frac{C f \cdot ρ fluid \cdot c \cdot u ∞}{2}

Go Density of fluid flowing over flat plate

ρ = \frac{2 \cdot h x}{C f \cdot c \cdot u ∞}

Go Free stream velocity of fluid flowing over flat plate

u ∞ = \frac{2 \cdot h x}{ρ \cdot c \cdot C f}

Go Specific heat capacity of fluid flowing over flat plate

c = \frac{2 \cdot h x}{ρ \cdot C f \cdot u ∞}

How to Evaluate Local skin friction coefficient?

Local skin friction coefficient evaluator uses Local Skin-Friction Coefficient = (2*Local Heat Transfer Coefficient)/(Density of Fluid*Specific Heat Capacity*Free Stream Velocity) to evaluate the Local Skin-Friction Coefficient, The local skin friction coefficient formula calculates the skin friction coefficient at a point that is at some distance from the leading edge of the flat plate using the Reynolds analogy. 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 Local Heat Transfer Coefficient (h_x), Density of Fluid (ρ_fluid), Specific Heat Capacity (c) & Free Stream Velocity (u_∞) 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*Local Heat Transfer Coefficient)/(Density of Fluid*Specific Heat Capacity*Free Stream Velocity). Here is an example- 0.002787 = (2*500)/(1.225*4184*70).

How to calculate Local skin friction coefficient?

With Local Heat Transfer Coefficient (h_x), Density of Fluid (ρ_fluid), Specific Heat Capacity (c) & Free Stream Velocity (u_∞) we can find Local skin friction coefficient using the formula - Local Skin-Friction Coefficient = (2*Local Heat Transfer Coefficient)/(Density of Fluid*Specific Heat Capacity*Free Stream Velocity).

What are the other ways to Calculate Local Skin-Friction Coefficient?

Here are the different ways to Calculate Local Skin-Friction Coefficient-

Local Skin-Friction Coefficient=2*Stanton Number

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Local skin friction coefficient Formula

​GoLocal skin friction coefficient given Stanton Number Formula

Local skin friction coefficient Example

Local skin friction coefficient Solution

Local skin friction coefficient Formula Elements

Other Formulas to find Local Skin-Friction Coefficient

Other formulas in Reynolds Analogy category

How to Evaluate Local skin friction coefficient?

FAQs on Local skin friction coefficient

Variable Name

GoLocal skin friction coefficient given Stanton Number Formula