You did not mention what do you want to implement (Profile? BC changing with time? etc...)

I recommend you to go through Fluent tutorials related to UDF. There are many.

I attached an example.

Regards.

Dear Mounir Bouaifi

My M.Tech project is on

"Computational Investigations of Irradiance for Photo-bioreactor for Exploration of Algal Growth"

And I want to write a UDF for the Algal growth with respect to light and CO2

Hi Som Dutt,

First I recommend you to read “Fluent UDF Manual”, in that PDF file

1. How to write UDF?

2. How to compile or interpreted?

3. Usage of Macro’s

4. How to access flow variable?

5. Also you can add, sources terms in the form of mass, momentum and energy to your simulation.

is given.

From your flow variables, you can calculate “amount of growth (probably)” and then you can add as source term.

Good luck with your work :-)