Unit vector from cell centroid to the boundary face
 

Hello!

I am planning to model particle attractions with the channel wall.
To get the force exerted by the channel wall to the particle, I'm planning to use DPM_BODYFORCE macro.

In order to get the resultant force, I need to get the unit vector from a cell to the boundary. how can i find it?

also how can i create a loop to loop over the cells in the boundary?

I'd be greatful if anyone could help me with this.

Thank you!

the macro is the adjacent cell’s variables values could be found using F_C0(f,t),THREAD_T0(t) and F_C1(f,t),THREAD_T1(t) macros (c1 t1 in case the face is interior)

not sure what is unit vector

i recommend you to read Ansys Fluent Customization manual, you may find some examples there

Hello AlexanderZ,

Thank you for your reply.

Do you know of a method to distinguish between particles injected via two separation injections (Injection 0 & Injection 1). Injected particles from both injections are identicle execpt for their surface properties.

once a particle is located, I want to identify whethher it is from injection 0 or injection 1.

I'd be greatful if you could help me with this.

Thank you!