[nvarma]

Hi,

I have some questions regarding the udf DEFINE_PROFILE thhats making modeling very difficult.

1. the f_loop(): what is the order of looping?

2. Is there any what to apply a temperature field (T(x,y,x)) using this macro, in 3-D. ie, I do not have function, but I have values of T at discrete points. Similar to "read profile", But I don't know if I can apply that profile using DEFINE_PROFILE,

[`e`]

Originally Posted by nvarma

1. the f_loop(): what is the order of looping?

Ordered by the face thread, face_t f (integer). They'll mostly be sequential in the mesh but won't be strictly structured.

Originally Posted by nvarma

2. Is there any what to apply a temperature field (T(x,y,x)) using this macro, in 3-D. ie, I do not have function, but I have values of T at discrete points. Similar to "read profile", But I don't know if I can apply that profile using DEFINE_PROFILE,

DEFINE_PROFILE is for boundaries. Are you creating a source generation term? You could add source terms to the energy equation with DEFINE_SOURCE. Otherwise, you could modify the solution with DEFINE_ADJUST (beginning of each iteration) -- but be careful of convergence issues when modifying field variables.

[nvarma]

Originally Posted by `e`

Ordered by the face thread, face_t f (integer). They'll mostly be sequential in the mesh but won't be strictly structured.



DEFINE_PROFILE is for boundaries. Are you creating a source generation term? You could add source terms to the energy equation with DEFINE_SOURCE. Otherwise, you could modify the solution with DEFINE_ADJUST (beginning of each iteration) -- but be careful of convergence issues when modifying field variables.

No I am not.

I have wall1 and wall2 (among other things in the model).

Both are boundary walls.

I want to set a heat flux BC for wall 2.
Qwall2(z)= Qwall1(z)

Since heatflux varies spatially, I want a way to map this heat-flux to wall 2.

Can I do this within the udf?
--------------------

that was my first question.

Second was regarding the f_loop macro so that I can map from one face thread to other.

thanks

[nvarma]

Just to simplify,


If I have Q(x,y,z) at discrete points (ie. a matrix/tensor), can I apply this on a wall through a udf?