gaussian heat flow

[emmet83]

Bye to all,
I am new to this forum.
usage ansys workbench version 12.1
I need to simulate a thermal input (heat flow) produced by a laser with a gaussian beam. then select the face I care about but I can only define a temporal dependence of my flow and not space. How can I tell him that my flow isn't even on the whole face, but it's Gaussian?
Thank you very much.

 

[stefano.garbin]

Well, the thing can be done even if it is not really simple.
follow these instructions step by step:
1- Create a coordinate system on the face on which you need to apply the flow. you can do it centered or on a corner, at your liking. when you created it and placed it remember to put the numbering (in the menu on the left the option is called "ansys system", an insulated and misleading name) of the coordinate system on "manual". Usually the proposed number is 12, but you can put the number you want (from 12 to up though!)
2- Create a "named selection" with the face on which you need to apply the flow and a recognizable name (e.g. "face").
3- insert a "command snippet" into the tree on the left where you go to define constraints and loads. in this snippett command copies the following lines:Here I define a matrix in which the first column is coordinated x
! and the second column is the value of the flow to be applied
The intermediate values are interpolated linearly
! 5 is the number of points defined, 12 is the number of the coordinate system
Face-related.

*dim, flow, table, 5,, x,,,12
flow(1,0) = -20.0, -10.0, 0.0, 10.0, 20.0
flow(1,1) = 0.0, 10.0, 50.0, 10.0, 0.0

I apply the flow or temperature
s, face, hflux, %flow%
♪as you can see from the comments this small portion of apdl code goes to create a "table", i.e. a matrix in which the first column is coordinated x and the second the value of the flow to be applied according to x. here are 5 points but you can put as many as you want, maybe you generate them with excel.
then find the sf command that serves to apply to the named selection "face" the flow (hflux) defined by the matrix %flow%.

I hope I've been clear and exhaustive!

 

[emmet83]

therefore, in the meantime thank you for the answer.
I followed the instructions you gave me but the analysis interrupts with this error:

_
the nlist field of ( facc ) on the s command is invalid. only the
labels of all,blank,p,p51x, or a component name are allowed. ♪
command is ignored.

I fear that the problem is the creation of the named selection that (I don't know why) is not displayed in the model but remains only in geometry. I tried to verify the configuration of the imports but I checked the boxes related to the named selections. I also tried to create the named selection directly in the model but it doesn't seem possible.

Do you have any suggestions?

 

[stefano.garbin]

you have to create named selection in the simulation environment, not in the geometry environment.
in the simulation environment select the (or) faces that interest you, right click on "create named selection".