UDF and DPM concentration
 

I am trying to define the drag force coefficient of the Discrete Phase Model using the particle concentration. Is it possible to access the particle concentration in the DEFINE_DPM_DRAG user function ? Many thanks, Caroline

Re: UDF and DPM concentration
 

Utilise la macro DPM_CONCENTRATION qui va te premettre de reconstruire ta fraction de volume ( je pense que c'est ce que tu recherches pour reconstruire ta force de trainee). Cependant ceci peut t'amener dans certaine cellule à avoir une fraction de volume > 1, donc besoin de limiteur. Aussi, attention à l'utilisation de cette macro en instationnaire.

thomas

Hi
I want to know how can find this macro?
C_DPMS_CONCENTRATION(c,t)
thanks

Please ask your question only once. There is no reason to ask it seven times, and certainly no reason to ask it in a thread that is more than 10 years old.

And be more clear in what you are asking. What do you want the macro to do?

If you add
in the top of your code, you have a macro with the name that you requested. One that will probably be useless for you, but we can not guess what you want the macro to do.

Hi
Thanks for your reply
I want to know when i use DPM model calculate the particle trajectory, How can i get concentration field? where i can find this code?

It's explained here:
In other words, you need to include the following line near the other #include lines you have in your UDF code:
For example: