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Darcy friction factor for Colburn analogy Formula

GoDarcy friction factor Formula

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Darcy Friction Factor is denoted by f. Its value depends on the flow's Reynolds number Re and on the pipe's relative roughness ε / D. It can be obtained from Moody's chart. Check FAQs

df = 8 \cdot St \cdot {Pr}^{0.67}

df - Darcy Friction Factor?St - Stanton Number?Pr - Prandtl Number?

Darcy friction factor for Colburn analogy Example

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Here is how the Darcy friction factor for Colburn analogy equation looks like with Values.

Here is how the Darcy friction factor for Colburn analogy equation looks like with Units.

Here is how the Darcy friction factor for Colburn analogy equation looks like.

2.5198 = 8 \cdot 0.4 \cdot {0.7}^{0.67}

2.5198 = 8 \cdot 0.4 \cdot {0.7}^{0.67}

2.5198 = 8 \cdot 0.4 \cdot {0.7}^{0.67}

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Darcy friction factor for Colburn analogy Solution

Follow our step by step solution on how to calculate Darcy friction factor for Colburn analogy?

FIRST Step Consider the formula

df = 8 \cdot St \cdot {Pr}^{0.67}

Next Step Substitute values of Variables

∴

df = 8 \cdot 0.4 \cdot {0.7}^{0.67}

Next Step Prepare to Evaluate

∴

df = 8 \cdot 0.4 \cdot {0.7}^{0.67}

Next Step Evaluate

∴

df = 2.51979764165058

LAST Step Rounding Answer

∴

df = 2.5198

Darcy friction factor for Colburn analogy Formula Elements

Variables

Darcy Friction Factor

Darcy Friction Factor is denoted by f. Its value depends on the flow's Reynolds number Re and on the pipe's relative roughness ε / D. It can be obtained from Moody's chart.

Symbol: df

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Darcy Friction Factor

Stanton Number

The Stanton Number is a dimensionless number that measures the ratio of heat transferred into a fluid to the thermal capacity of the fluid.

Symbol: St

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Stanton Number

Prandtl Number

The Prandtl number (Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity.

Symbol: Pr

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Prandtl Number

Other Formulas to find Darcy Friction Factor

Go Darcy friction factor

df = \frac{64}{Re D}

Other formulas in Laminar Flow category

Go Reynolds Number given Darcy Friction Factor

Re = \frac{64}{df}

Go Hydrodynamic entry length

L = 0.04 \cdot D \cdot Re D

Go Diameter of hydrodynamic entry tube

D = \frac{L}{0.04 \cdot Re D}

Go Thermal entry length

L = 0.04 \cdot Re D \cdot D \cdot Pr

How to Evaluate Darcy friction factor for Colburn analogy?

Darcy friction factor for Colburn analogy evaluator uses Darcy Friction Factor = 8*Stanton Number*Prandtl Number^0.67 to evaluate the Darcy Friction Factor, The Darcy friction factor for Colburn analogy formula is defined as a dimensionless quantity used for the description of frictional losses in pipe or duct as well as for open-channel flow. Darcy Friction Factor is denoted by df symbol.

How to evaluate Darcy friction factor for Colburn analogy using this online evaluator? To use this online evaluator for Darcy friction factor for Colburn analogy, enter Stanton Number (St) & Prandtl Number (Pr) and hit the calculate button.

FAQs on Darcy friction factor for Colburn analogy

What is the formula to find Darcy friction factor for Colburn analogy?

The formula of Darcy friction factor for Colburn analogy is expressed as Darcy Friction Factor = 8*Stanton Number*Prandtl Number^0.67. Here is an example- 0.629949 = 8*0.4*0.7^0.67.

How to calculate Darcy friction factor for Colburn analogy?

With Stanton Number (St) & Prandtl Number (Pr) we can find Darcy friction factor for Colburn analogy using the formula - Darcy Friction Factor = 8*Stanton Number*Prandtl Number^0.67.

What are the other ways to Calculate Darcy Friction Factor?

Here are the different ways to Calculate Darcy Friction Factor-

Darcy Friction Factor=64/Reynolds Number Dia

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Darcy friction factor for Colburn analogy Formula

​GoDarcy friction factor Formula

Darcy friction factor for Colburn analogy Example

Darcy friction factor for Colburn analogy Solution

Darcy friction factor for Colburn analogy Formula Elements

Other Formulas to find Darcy Friction Factor

Other formulas in Laminar Flow category

How to Evaluate Darcy friction factor for Colburn analogy?

FAQs on Darcy friction factor for Colburn analogy

Variable Name

GoDarcy friction factor Formula