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Porosity or Void Fraction Formula

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Porosity or Void Fraction is a measure of the void (i.e. "empty") spaces in a material,. Check FAQs

ε = \frac{v 0}{v B}

ε - Porosity or Void Fraction?v₀ - Volume of Voids in Bed?v_B - Total Volume of Bed?

Porosity or Void Fraction Example

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Here is how the Porosity or Void Fraction equation looks like with Values.

Here is how the Porosity or Void Fraction equation looks like with Units.

Here is how the Porosity or Void Fraction equation looks like.

0.0667 = \frac{0.02}{0.3}

0.0667 = \frac{0.02m³}{0.3m³}

0.0667 = \frac{0.02}{0.3}

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Porosity or Void Fraction Solution

Follow our step by step solution on how to calculate Porosity or Void Fraction?

FIRST Step Consider the formula

ε = \frac{v 0}{v B}

Next Step Substitute values of Variables

∴

ε = \frac{0.02m³}{0.3m³}

Next Step Prepare to Evaluate

∴

ε = \frac{0.02}{0.3}

Next Step Evaluate

∴

ε = 0.0666666666666667

LAST Step Rounding Answer

∴

ε = 0.0667

Porosity or Void Fraction Formula Elements

Variables

Porosity or Void Fraction

Porosity or Void Fraction is a measure of the void (i.e. "empty") spaces in a material,.

Symbol: ε

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Porosity or Void Fraction

Volume of Voids in Bed

Volume of Voids in Bed is the volume of mobile phase in a column.

Symbol: v₀

Measurement: VolumeUnit: m³

Note: Value should be greater than 0.

Formulas to find Volume of Voids in Bed

Total Volume of Bed

Total Volume of Bed is total volume of bed occupied by the bed plus volume occupied by solids.

Symbol: v_B

Measurement: VolumeUnit: m³

Note: Value can be positive or negative.

Formulas to find Total Volume of Bed

Other formulas in Fluidisation category

Go Energy Required to Crush Coarse Materials according to Bond's Law

E = W i \cdot ({(\frac{100}{d 2})}^{0.5} - {(\frac{100}{d 1})}^{0.5})

Go Mass Mean Diameter

D W = (x A \cdot D pi)

Go Number of Particles

N p = \frac{m}{ρ particle \cdot V particle}

Go Sauter Mean Diameter

d sauter = \frac{6 \cdot V particle_1}{S particle}

How to Evaluate Porosity or Void Fraction?

Porosity or Void Fraction evaluator uses Porosity or Void Fraction = Volume of Voids in Bed/Total Volume of Bed to evaluate the Porosity or Void Fraction, The Porosity or Void Fraction formula is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume . Porosity or Void Fraction is denoted by ε symbol.

How to evaluate Porosity or Void Fraction using this online evaluator? To use this online evaluator for Porosity or Void Fraction, enter Volume of Voids in Bed (v₀) & Total Volume of Bed (v_B) and hit the calculate button.

FAQs on Porosity or Void Fraction

What is the formula to find Porosity or Void Fraction?

The formula of Porosity or Void Fraction is expressed as Porosity or Void Fraction = Volume of Voids in Bed/Total Volume of Bed. Here is an example- 6.7E-6 = 0.02/0.3.

How to calculate Porosity or Void Fraction?

With Volume of Voids in Bed (v₀) & Total Volume of Bed (v_B) we can find Porosity or Void Fraction using the formula - Porosity or Void Fraction = Volume of Voids in Bed/Total Volume of Bed.

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