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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

Credits

Created by Ravi Khiyani

Indian Institute of Technology, Madras (IIT Madras), Chennai

Ravi Khiyani has created this Formula and 200+ more formulas!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

Anshika Arya has verified this Formula and 2500+ more formulas!

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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

Credits

Other formulas in Laminar Flow category

How to Evaluate Colburn's j-factor?

FAQs on Colburn's j-factor

Variable Name