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Colburn's j-factor Formula

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Colburn's j-factor is a non-dimensional parameter that arises in convective heat transfer analysis. Check FAQs

j H = St \cdot {(Pr)}^{\frac{2}{3}}

j_H - Colburn's j-factor?St - Stanton Number?Pr - Prandtl Number?

Colburn's j-factor Example

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Here is how the Colburn's j-factor equation looks like with Values.

Here is how the Colburn's j-factor equation looks like with Units.

Here is how the Colburn's j-factor equation looks like.

0.3153 = 0.4 \cdot {(0.7)}^{\frac{2}{3}}

0.3153 = 0.4 \cdot {(0.7)}^{\frac{2}{3}}

0.3153 = 0.4 \cdot {(0.7)}^{\frac{2}{3}}

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Colburn's j-factor Solution

Follow our step by step solution on how to calculate Colburn's j-factor?

FIRST Step Consider the formula

j H = St \cdot {(Pr)}^{\frac{2}{3}}

Next Step Substitute values of Variables

∴

j H = 0.4 \cdot {(0.7)}^{\frac{2}{3}}

Next Step Prepare to Evaluate

∴

j H = 0.4 \cdot {(0.7)}^{\frac{2}{3}}

Next Step Evaluate

∴

j H = 0.31534940652421

LAST Step Rounding Answer

∴

j H = 0.3153

Colburn's j-factor Formula Elements

Variables

Colburn's j-factor

Colburn's j-factor is a non-dimensional parameter that arises in convective heat transfer analysis.

Symbol: j_H

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Colburn's j-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

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

How to Evaluate Colburn's j-factor?

Colburn's j-factor evaluator uses Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3) to evaluate the Colburn's j-factor, Colburn's j-factor formula calculates the j-factor which has been extensively used for calculating the heat transfer coefficient in the design & performance prediction of heat exchangers, particularly compact heat exchangers. Colburn's j-factor is denoted by j_H symbol.

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

FAQs on Colburn's j-factor

What is the formula to find Colburn's j-factor?

The formula of Colburn's j-factor is expressed as Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3). Here is an example- 0.078837 = 0.4*(0.7)^(2/3).

How to calculate Colburn's j-factor?

With Stanton Number (St) & Prandtl Number (Pr) we can find Colburn's j-factor using the formula - Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3).

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Colburn's j-factor Formula

Colburn's j-factor Example

Colburn's j-factor Solution

Colburn's j-factor Formula Elements

Other formulas in Laminar Flow category

How to Evaluate Colburn's j-factor?

FAQs on Colburn's j-factor

Variable Name