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Boundary Layer Thickness for Laminar Flow Formula

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Laminar Boundary Layer Thickness is the distance normal to the wall to a point where the flow velocity has essentially reached the 'asymptotic' velocity, or 99 percent of freestream velocity. Check FAQs

δ L = 5 \cdot \frac{x}{\sqrt{Re L}}

δ_L - Laminar Boundary Layer Thickness?x - Distance on X-Axis?Re_L - Reynolds Number for Laminar Flow?

Boundary Layer Thickness for Laminar Flow Example

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Here is how the Boundary Layer Thickness for Laminar Flow equation looks like with Values.

Here is how the Boundary Layer Thickness for Laminar Flow equation looks like with Units.

Here is how the Boundary Layer Thickness for Laminar Flow equation looks like.

0.2475 = 5 \cdot \frac{2.1}{\sqrt{1800}}

0.2475m = 5 \cdot \frac{2.1m}{\sqrt{1800}}

0.2475 = 5 \cdot \frac{2.1}{\sqrt{1800}}

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Boundary Layer Thickness for Laminar Flow Solution

Follow our step by step solution on how to calculate Boundary Layer Thickness for Laminar Flow?

FIRST Step Consider the formula

δ L = 5 \cdot \frac{x}{\sqrt{Re L}}

Next Step Substitute values of Variables

∴

δ L = 5 \cdot \frac{2.1m}{\sqrt{1800}}

Next Step Prepare to Evaluate

∴

δ L = 5 \cdot \frac{2.1}{\sqrt{1800}}

Next Step Evaluate

∴

δ L = 0.247487373415292m

LAST Step Rounding Answer

∴

δ L = 0.2475m

Boundary Layer Thickness for Laminar Flow Formula Elements

Variables

Functions

Laminar Boundary Layer Thickness

Laminar Boundary Layer Thickness is the distance normal to the wall to a point where the flow velocity has essentially reached the 'asymptotic' velocity, or 99 percent of freestream velocity.

Symbol: δ_L

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Laminar Boundary Layer Thickness

Distance on X-Axis

Distance on X-Axis is the distance of point measured along x-axis form origin.

Symbol: x

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Distance on X-Axis

Reynolds Number for Laminar Flow

Reynolds Number for Laminar Flow is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities.

Symbol: Re_L

Measurement: NAUnit: Unitless

Note: Value should be between 0 to 2000.

Formulas to find Reynolds Number for Laminar Flow

sqrt

A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.

Syntax: sqrt(Number)

Other formulas in Flow over Airfoils category

Go Lift Coefficient for Symmetrical Airfoil by Thin Airfoil Theory

C L = 2 \cdot π \cdot α

Go Moment Coefficient about Leading-Edge for Symmetrical Airfoil by Thin Airfoil Theory

C m,le = - \frac{C L}{4}

Go Lift Coefficient for Cambered Airfoil

C L,cam = 2 \cdot π \cdot ((α) - (α 0))

Go Center of Pressure Location for Cambered Airfoil

x cp = - \frac{C m,le \cdot c}{C L}

How to Evaluate Boundary Layer Thickness for Laminar Flow?

Boundary Layer Thickness for Laminar Flow evaluator uses Laminar Boundary Layer Thickness = 5*Distance on X-Axis/sqrt(Reynolds Number for Laminar Flow) to evaluate the Laminar Boundary Layer Thickness, The Boundary Layer Thickness for laminar flow is a measure of the distance from the surface of a solid body, such as an airfoil or a pipe, to the point where the flow velocity reaches approximately 99% of the free stream velocity. Laminar Boundary Layer Thickness is denoted by δ_L symbol.

How to evaluate Boundary Layer Thickness for Laminar Flow using this online evaluator? To use this online evaluator for Boundary Layer Thickness for Laminar Flow, enter Distance on X-Axis (x) & Reynolds Number for Laminar Flow (Re_L) and hit the calculate button.

FAQs on Boundary Layer Thickness for Laminar Flow

What is the formula to find Boundary Layer Thickness for Laminar Flow?

The formula of Boundary Layer Thickness for Laminar Flow is expressed as Laminar Boundary Layer Thickness = 5*Distance on X-Axis/sqrt(Reynolds Number for Laminar Flow). Here is an example- 0.247487 = 5*2.1/sqrt(1800).

How to calculate Boundary Layer Thickness for Laminar Flow?

With Distance on X-Axis (x) & Reynolds Number for Laminar Flow (Re_L) we can find Boundary Layer Thickness for Laminar Flow using the formula - Laminar Boundary Layer Thickness = 5*Distance on X-Axis/sqrt(Reynolds Number for Laminar Flow). This formula also uses Square Root Function function(s).

Can the Boundary Layer Thickness for Laminar Flow be negative?

No, the Boundary Layer Thickness for Laminar Flow, measured in Length cannot be negative.

Which unit is used to measure Boundary Layer Thickness for Laminar Flow?

Boundary Layer Thickness for Laminar Flow is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Boundary Layer Thickness for Laminar Flow can be measured.

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