Film Thickness by Film Theory Calculator

✖The Diffusion Coefficient (DAB) is the amount of a particular substance that diffuses across a unit area in 1 second under the influence of a gradient of one unit.ⓘ Diffusion Coefficient (DAB) [D_AB]			+10% -10%
✖Convective Mass Transfer Coefficient is a function of geometry of the system and the velocity and properties of the fluid similar to the heat transfer coefficient.ⓘ Convective Mass Transfer Coefficient [k_L]			+10% -10%

✖The Film Thickness is the thickness between the wall or the phase boundary or the interface to the other end of the film.ⓘ Film Thickness by Film Theory [δ]

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Film Thickness by Film Theory Solution

STEP 0: Pre-Calculation Summary

Formula Used

Film Thickness = Diffusion Coefficient (DAB)/Convective Mass Transfer Coefficient
δ = D_AB/k_L
This formula uses 3 Variables

Variables Used

Film Thickness - (Measured in Meter) - The Film Thickness is the thickness between the wall or the phase boundary or the interface to the other end of the film.
Diffusion Coefficient (DAB) - (Measured in Square Meter Per Second) - The Diffusion Coefficient (DAB) is the amount of a particular substance that diffuses across a unit area in 1 second under the influence of a gradient of one unit.
Convective Mass Transfer Coefficient - (Measured in Meter per Second) - Convective Mass Transfer Coefficient is a function of geometry of the system and the velocity and properties of the fluid similar to the heat transfer coefficient.

STEP 1: Convert Input(s) to Base Unit

Diffusion Coefficient (DAB): 0.007 Square Meter Per Second --> 0.007 Square Meter Per Second No Conversion Required
Convective Mass Transfer Coefficient: 0.0095 Meter per Second --> 0.0095 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

δ = D_AB/k_L --> 0.007/0.0095

Evaluating ... ...

δ = 0.736842105263158

STEP 3: Convert Result to Output's Unit

0.736842105263158 Meter --> No Conversion Required

FINAL ANSWER

0.736842105263158 ≈ 0.736842 Meter <-- Film Thickness

(Calculation completed in 00.004 seconds)

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Created by Vaibhav Mishra

DJ Sanghvi College of Engineering (DJSCE), Mumbai

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National University of Judicial Science (NUJS), Kolkata

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< Mass Transfer Theories Calculators

Liquid Phase Mass Transfer Coefficient by Two Film Theory

LaTeX Go Overall Liquid Phase Mass Transfer Coefficient = 1/((1/(Gas Phase Mass Transfer Coefficient*Henry's Constant))+(1/Liquid Phase Mass Transfer Coefficient))

Average Mass Transfer Coefficient by Penetration Theory

LaTeX Go Average Convective Mass Transfer Coefficient = 2*sqrt(Diffusion Coefficient (DAB)/(pi*Average Contact Time))

Mass Transfer Coefficient by Surface Renewal Theory

LaTeX Go Convective Mass Transfer Coefficient = sqrt(Diffusion Coefficient (DAB)*Surface Renewal Rate)

Mass Transfer Coefficient by Film Theory

LaTeX Go Convective Mass Transfer Coefficient = Diffusion Coefficient (DAB)/Film Thickness

Film Thickness by Film Theory Formula

LaTeX Go

Film Thickness = Diffusion Coefficient (DAB)/Convective Mass Transfer Coefficient
δ = D_AB/k_L

What is Film Theory in Mass Transfer ?

Film theory in Mass transfer states that the resistance in mass transfer between fluid phases in turbulent flow is present in a thin layer adjacent to the interface called film. As per Film Theory (Whitman 1932), the mass transfer coefficient is equal to the ratio of diffusivity to film thickness.

How to Calculate Film Thickness by Film Theory?

Film Thickness by Film Theory calculator uses Film Thickness = Diffusion Coefficient (DAB)/Convective Mass Transfer Coefficient to calculate the Film Thickness, The Film Thickness by Film Theory formula is used to calculate the film thickness based on the Film Theory where diffusivity and mass transfer coefficient are known. Film Thickness is denoted by δ symbol.

How to calculate Film Thickness by Film Theory using this online calculator? To use this online calculator for Film Thickness by Film Theory, enter Diffusion Coefficient (DAB) (D_AB) & Convective Mass Transfer Coefficient (k_L) and hit the calculate button. Here is how the Film Thickness by Film Theory calculation can be explained with given input values -> 0.736842 = 0.007/0.0095.

FAQ

What is Film Thickness by Film Theory?

The Film Thickness by Film Theory formula is used to calculate the film thickness based on the Film Theory where diffusivity and mass transfer coefficient are known and is represented as δ = D_AB/k_L or Film Thickness = Diffusion Coefficient (DAB)/Convective Mass Transfer Coefficient. The Diffusion Coefficient (DAB) is the amount of a particular substance that diffuses across a unit area in 1 second under the influence of a gradient of one unit & Convective Mass Transfer Coefficient is a function of geometry of the system and the velocity and properties of the fluid similar to the heat transfer coefficient.

How to calculate Film Thickness by Film Theory?

The Film Thickness by Film Theory formula is used to calculate the film thickness based on the Film Theory where diffusivity and mass transfer coefficient are known is calculated using Film Thickness = Diffusion Coefficient (DAB)/Convective Mass Transfer Coefficient. To calculate Film Thickness by Film Theory, you need Diffusion Coefficient (DAB) (D_AB) & Convective Mass Transfer Coefficient (k_L). With our tool, you need to enter the respective value for Diffusion Coefficient (DAB) & Convective Mass Transfer Coefficient 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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