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Friction Factor given Shear Velocity Formula

GoFriction Factor when Head Loss is due to Frictional Resistance Formula

GoFriction Factor Formula

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The Darcy Friction Factor refers to the dimensionless quantity used in fluid mechanics to describe the frictional losses in pipe flow and open-channel flow. Check FAQs

f = 8 \cdot {(\frac{V shear}{V mean})}^{2}

f - Darcy Friction Factor?V_shear - Shear Velocity?V_mean - Mean Velocity?

Friction Factor given Shear Velocity Example

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Here is how the Friction Factor given Shear Velocity equation looks like with Values.

Here is how the Friction Factor given Shear Velocity equation looks like with Units.

Here is how the Friction Factor given Shear Velocity equation looks like.

6.3523 = 8 \cdot {(\frac{9}{10.1})}^{2}

6.3523 = 8 \cdot {(\frac{9m/s}{10.1m/s})}^{2}

6.3523 = 8 \cdot {(\frac{9}{10.1})}^{2}

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Friction Factor given Shear Velocity Solution

Follow our step by step solution on how to calculate Friction Factor given Shear Velocity?

FIRST Step Consider the formula

f = 8 \cdot {(\frac{V shear}{V mean})}^{2}

Next Step Substitute values of Variables

∴

f = 8 \cdot {(\frac{9m/s}{10.1m/s})}^{2}

Next Step Prepare to Evaluate

∴

f = 8 \cdot {(\frac{9}{10.1})}^{2}

Next Step Evaluate

∴

f = 6.35231840015685

LAST Step Rounding Answer

∴

f = 6.3523

Friction Factor given Shear Velocity Formula Elements

Variables

Darcy Friction Factor

The Darcy Friction Factor refers to the dimensionless quantity used in fluid mechanics to describe the frictional losses in pipe flow and open-channel flow.

Symbol: f

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Darcy Friction Factor

Shear Velocity

The Shear Velocity refers to the measure of the shear stress exerted by the fluid flow on the boundary, such as the bed of a river or the walls of a pipe.

Symbol: V_shear

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Shear Velocity

Mean Velocity

The Mean Velocity refers to the average speed at which fluid flows through a given cross-sectional area of a pipe or channel.

Symbol: V_mean

Measurement: SpeedUnit: m/s

Note: Value can be positive or negative.

Formulas to find Mean Velocity

Other Formulas to find Darcy Friction Factor

Go Friction Factor when Head Loss is due to Frictional Resistance

f = \frac{h \cdot 2 \cdot [g] \cdot D pipe}{L p \cdot {V mean}^{2}}

Go Friction Factor

f = 64 \cdot \frac{μ}{ρ Fluid \cdot V mean \cdot D pipe}

Go Friction Factor given Reynolds Number

f = \frac{64}{Re}

Go Friction Factor given Shear Stress and Density

f = \frac{8 \cdot 𝜏}{V mean \cdot V mean \cdot ρ Fluid}

How to Evaluate Friction Factor given Shear Velocity?

Friction Factor given Shear Velocity evaluator uses Darcy Friction Factor = 8*(Shear Velocity/Mean Velocity)^2 to evaluate the Darcy Friction Factor, The Friction Factor given Shear Velocity is defined as the dimensionless quantity used in fluid mechanics to quantify the resistance to flow in a pipe or duct due to friction given the velocity at which shear stress is converted into a velocity unit. Darcy Friction Factor is denoted by f symbol.

How to evaluate Friction Factor given Shear Velocity using this online evaluator? To use this online evaluator for Friction Factor given Shear Velocity, enter Shear Velocity (V_shear) & Mean Velocity (V_mean) and hit the calculate button.

FAQs on Friction Factor given Shear Velocity

What is the formula to find Friction Factor given Shear Velocity?

The formula of Friction Factor given Shear Velocity is expressed as Darcy Friction Factor = 8*(Shear Velocity/Mean Velocity)^2. Here is an example- 6.352318 = 8*(9/10.1)^2.

How to calculate Friction Factor given Shear Velocity?

With Shear Velocity (V_shear) & Mean Velocity (V_mean) we can find Friction Factor given Shear Velocity using the formula - Darcy Friction Factor = 8*(Shear Velocity/Mean Velocity)^2.

What are the other ways to Calculate Darcy Friction Factor?

Here are the different ways to Calculate Darcy Friction Factor-

Darcy Friction Factor=(Head Loss due to Friction*2*[g]*Diameter of Pipe)/(Length of Pipe*Mean Velocity^2)
Darcy Friction Factor=64*Dynamic Viscosity/(Density of Fluid*Mean Velocity*Diameter of Pipe)
Darcy Friction Factor=64/Reynolds Number

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