## Credits

Created by Vaibhav Mishra
DJ Sanghvi College of Engineering (DJSCE), Mumbai
Vaibhav Mishra has created this Calculator and 50+ more calculators!
Verified by Soupayan banerjee
National University of Judicial Science (NUJS), Kolkata
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## Film Thickness based on Film Theory Solution

STEP 0: Pre-Calculation Summary
Formula Used
Film Thickness = Diffusion Coefficient/Convective Mass Transfer Coefficient
δ = DAB/kL
This formula uses 2 Variables
Variables Used
Diffusion 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. (Measured in Square Meter Per Second)
Convective Mass Transfer Coefficient - 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. (Measured in Meter per Second)
STEP 1: Convert Input(s) to Base Unit
Diffusion Coefficient: 0.005 Square Meter Per Second --> 0.005 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 = DAB/kL --> 0.005/0.0095
Evaluating ... ...
δ = 0.526315789473684
STEP 3: Convert Result to Output's Unit
0.526315789473684 Meter --> No Conversion Required
0.526315789473684 Meter <-- Film Thickness
(Calculation completed in 00.000 seconds)

## < 9 Mass Transfer Theories Calculators

Liquid Phase Mass Transfer Coefficient based on Two Film Theory
Overall Liquid Phase Mass Transfer Coefficient = 1/((1/(Gas Phase Mass Transfer Coefficient*Henry's Constant))+(1/Liquid Phase Mass Transfer Coefficient)) Go
Gas Phase Mass Transfer Coefficient based on Two Film Theory
Overall Gas Phase Mass Transfer Coefficient = 1/((1/Gas Phase Mass Transfer Coefficient)+(Henry's Constant/Liquid Phase Mass Transfer Coefficient)) Go
Penetration Theory of Mass Transfer
Convective Mass Transfer Coefficient = 2*sqrt(Diffusion Coefficient/(pi*Contact Time)) Go
Contact Time based on Penetration Theory
Contact Time = (4*Diffusion Coefficient)/((Convective Mass Transfer Coefficient^2)*pi) Go
Mass Transfer Coefficient based on Surface Renewal Theory
Convective Mass Transfer Coefficient = sqrt(Diffusion Coefficient*Surface Renewal Rate) Go
Surface Renewal Rate based on Surface Renewal Theory
Surface Renewal Rate = (Convective Mass Transfer Coefficient^2)/Diffusion Coefficient Go
Mass Transfer Coefficient based on Film Theory
Convective Mass Transfer Coefficient = Diffusion Coefficient/Film Thickness Go
Film Thickness based on Film Theory
Film Thickness = Diffusion Coefficient/Convective Mass Transfer Coefficient Go
Diffusivity Based on Film Theory
Diffusion Coefficient = Convective Mass Transfer Coefficient*Film Thickness Go

### Film Thickness based on Film Theory Formula

Film Thickness = Diffusion Coefficient/Convective Mass Transfer Coefficient
δ = DAB/kL

## 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 based on Film Theory?

Film Thickness based on Film Theory calculator uses Film Thickness = Diffusion Coefficient/Convective Mass Transfer Coefficient to calculate the Film Thickness, The Film Thickness based on 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 based on Film Theory using this online calculator? To use this online calculator for Film Thickness based on Film Theory, enter Diffusion Coefficient (DAB) & Convective Mass Transfer Coefficient (kL) and hit the calculate button. Here is how the Film Thickness based on Film Theory calculation can be explained with given input values -> 0.526316 = 0.005/0.0095.

### FAQ

What is Film Thickness based on Film Theory?
The Film Thickness based on 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 = DAB/kL or Film Thickness = Diffusion Coefficient/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 based on Film Theory?
The Film Thickness based on 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/Convective Mass Transfer Coefficient. To calculate Film Thickness based on Film Theory, you need Diffusion Coefficient (DAB) & Convective Mass Transfer Coefficient (kL). With our tool, you need to enter the respective value for Diffusion Coefficient & 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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