Diffusion Flux Calculator

✖Diffusion coefficient is the proportionality factor D in Fick's law .ⓘ Diffusion Coefficient [D]			+10% -10%
✖Concentration difference is the difference in concentration of diffusing species.ⓘ Concentration difference [ΔC]			+10% -10%
✖Distance (length) across which the diffusion is taking place.ⓘ Distance [d]			+10% -10%

✖Diffusion flux is the mass diffusing through and perpendicular to a unit cross-sectional area of solid per unit of time.ⓘ Diffusion Flux [J]

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Formula

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Diffusion Flux

Formula

`"J" = "D"*("ΔC"/"d")`

Example

`"40000kg/s/m²"="800m²/s"*("0.5kg/m³"/"0.01m")`

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Diffusion Flux Solution

STEP 0: Pre-Calculation Summary

Formula Used

Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance)
J = D*(ΔC/d)
This formula uses 4 Variables

Variables Used

Diffusion flux - (Measured in Kilogram per Second per Square Meter) - Diffusion flux is the mass diffusing through and perpendicular to a unit cross-sectional area of solid per unit of time.
Diffusion Coefficient - (Measured in Square Meter Per Second) - Diffusion coefficient is the proportionality factor D in Fick's law .
Concentration difference - (Measured in Kilogram per Cubic Meter) - Concentration difference is the difference in concentration of diffusing species.
Distance - (Measured in Meter) - Distance (length) across which the diffusion is taking place.

STEP 1: Convert Input(s) to Base Unit

Diffusion Coefficient: 800 Square Meter Per Second --> 800 Square Meter Per Second No Conversion Required
Concentration difference: 0.5 Kilogram per Cubic Meter --> 0.5 Kilogram per Cubic Meter No Conversion Required
Distance: 0.01 Meter --> 0.01 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

J = D*(ΔC/d) --> 800*(0.5/0.01)

Evaluating ... ...

J = 40000

STEP 3: Convert Result to Output's Unit

40000 Kilogram per Second per Square Meter --> No Conversion Required

FINAL ANSWER

40000 Kilogram per Second per Square Meter <-- Diffusion flux

(Calculation completed in 00.004 seconds)

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Created by Hariharan V S

Indian Institute of Technology (IIT), Chennai

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< 9 Composition and Diffusion Calculators

Atom percent to mass percent

Go Mass Percent of First Element = Atomic percent of first element*Atomic mass of first element*100/(Atomic percent of first element*Atomic mass of first element+(100-Atomic percent of first element)*Atomic mass of second element)

Atom percent

Go Atomic percent of first element = 100*Mass Percent of First Element*Atomic mass of second element/(Mass Percent of First Element*Atomic mass of second element+(100-Mass Percent of First Element)*Atomic mass of first element)

Non-steady state diffusion

Go Concentration at x Distance = Initial Concentration+(Surface concentration-Initial Concentration)*(1-erf(Distance/(2*sqrt(Diffusion Coefficient*Diffusion Time))))

Volume percent to mass percent

Go Mass percent of first phase = Volume percent of first phase*Density of the first phase*100/(Volume percent of first phase*Density of the first phase+(100-Volume percent of first phase)*Density of the second phase)

Mass percent to volume percent

Go Volume percent of first phase = Mass percent of first phase*Density of the second phase*100/(Mass percent of first phase*Density of the second phase+(100-Mass percent of first phase)*Density of the first phase)

Entropy of mixing

Go Entropy of mixing = 8.314*(Mole fraction of element A*ln(Mole fraction of element A)+(1-Mole fraction of element A)*ln(1-Mole fraction of element A))

Equilibrium Vacancy Concentration

Go Number of vacancies = Number of atomic sites*exp(-Activation energy for vacancy formation/([BoltZ]*Temperature))

Temperature dependent diffusion coefficient

Go Diffusion Coefficient = Pre-exponential factor*e^(-Activation energy for diffusion/(Universal Gas Constant*Temperature))

Diffusion Flux

Go Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance)

Diffusion Flux Formula

Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance)
J = D*(ΔC/d)

Fick's first law

Fick's first law states that the diffusive flux goes from regions of high concentration to regions of low concentration, with a magnitude that is proportional to the concentration gradient and the proportionality constant is the diffusion coefficient.

How to Calculate Diffusion Flux?

Diffusion Flux calculator uses Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance) to calculate 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 calculate Diffusion Flux using this online calculator? To use this online calculator for Diffusion Flux, enter Diffusion Coefficient (D), Concentration difference (ΔC) & Distance (d) and hit the calculate button. Here is how the Diffusion Flux calculation can be explained with given input values -> 40000 = 800*(0.5/0.01).

FAQ

What is Diffusion Flux?

Diffusion Flux is the mass diffusing through and perpendicular to a unit cross-sectional area of solid per unit of time and is represented as J = D*(ΔC/d) or Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance). Diffusion coefficient is the proportionality factor D in Fick's law , Concentration difference is the difference in concentration of diffusing species & Distance (length) across which the diffusion is taking place.

How to calculate Diffusion Flux?

Diffusion Flux is the mass diffusing through and perpendicular to a unit cross-sectional area of solid per unit of time is calculated using Diffusion flux = Diffusion Coefficient*(Concentration difference/Distance). To calculate Diffusion Flux, you need Diffusion Coefficient (D), Concentration difference (ΔC) & Distance (d). With our tool, you need to enter the respective value for Diffusion Coefficient, Concentration difference & Distance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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