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Diffusion Flux Formula

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Diffusion flux is the mass diffusing through and perpendicular to a unit cross-sectional area of solid per unit of time. Check FAQs

J = D \cdot (\frac{ΔC}{d})

J - Diffusion flux?D - Diffusion Coefficient?ΔC - Concentration difference?d - Distance?

Diffusion Flux Example

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Here is how the Diffusion Flux equation looks like with Values.

Here is how the Diffusion Flux equation looks like with Units.

Here is how the Diffusion Flux equation looks like.

40000 = 800 \cdot (\frac{0.5}{0.01})

40000kg/s/m² = 800m²/s \cdot (\frac{0.5kg/m³}{0.01m})

40000 = 800 \cdot (\frac{0.5}{0.01})

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Diffusion Flux Solution

Follow our step by step solution on how to calculate Diffusion Flux?

FIRST Step Consider the formula

J = D \cdot (\frac{ΔC}{d})

Next Step Substitute values of Variables

∴

J = 800m²/s \cdot (\frac{0.5kg/m³}{0.01m})

Next Step Prepare to Evaluate

∴

J = 800 \cdot (\frac{0.5}{0.01})

LAST Step Evaluate

∴

J = 40000kg/s/m²

Diffusion Flux Formula Elements

Variables

Diffusion flux

Diffusion flux is the mass diffusing through and perpendicular to a unit cross-sectional area of solid per unit of time.

Symbol: J

Measurement: Mass FluxUnit: kg/s/m²

Note: Value should be greater than 0.

Formulas to find Diffusion flux

Diffusion Coefficient

Diffusion coefficient is the proportionality factor D in Fick's law .

Symbol: D

Measurement: DiffusivityUnit: m²/s

Note: Value can be positive or negative.

Formulas to find Diffusion Coefficient

Concentration difference

Concentration difference is the difference in concentration of diffusing species.

Symbol: ΔC

Measurement: Mass ConcentrationUnit: kg/m³

Note: Value should be greater than 0.

Formulas to find Concentration difference

Distance

Distance (length) across which the diffusion is taking place.

Symbol: d

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Distance

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How to Evaluate Diffusion Flux?

Diffusion Flux evaluator uses Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance) to evaluate the Diffusion flux, Diffusion Flux is the mass diffusing through and perpendicular to a unit cross-sectional area of solid per unit of time. Diffusion flux is denoted by J symbol.

How to evaluate Diffusion Flux using this online evaluator? To use this online evaluator for Diffusion Flux, enter Diffusion Coefficient (D), Concentration difference (ΔC) & Distance (d) and hit the calculate button.

FAQs on Diffusion Flux

What is the formula to find Diffusion Flux?

The formula of Diffusion Flux is expressed as Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance). Here is an example- 40000 = 800*(0.5/0.01).

How to calculate Diffusion Flux?

With Diffusion Coefficient (D), Concentration difference (ΔC) & Distance (d) we can find Diffusion Flux using the formula - Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance).

Can the Diffusion Flux be negative?

No, the Diffusion Flux, measured in Mass Flux cannot be negative.

Which unit is used to measure Diffusion Flux?

Diffusion Flux is usually measured using the Kilogram per Second per Square Meter[kg/s/m²] for Mass Flux. Kilogram per Hour per Square Meter[kg/s/m²], Kilogram per Hour per Square Foot[kg/s/m²], Pound per Hour per Square Foot[kg/s/m²] are the few other units in which Diffusion Flux can be measured.

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Diffusion Flux Formula

Diffusion Flux Example

Diffusion Flux Solution

Diffusion Flux Formula Elements

Other formulas in Composition and Diffusion category

How to Evaluate Diffusion Flux?

FAQs on Diffusion Flux

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