Set different temperature at different boundaries

User Support
1

Hi all,
I’m trying to set different temperature at different boundaries, the code is shown below. From the view by Paraview, it seems that DirichletBC of temperature will be overrided by my_model.T = F.Temperature(873), which means the temperature is 873 K everywhere while what I expect is that the temperature at id_W_Yupper is 1200 K and id_CuCrZr_inner is 373 K.

my_model.T = F.Temperature(873)

boundary_conditions = [
    F.DirichletBC(field="T", value=1200, surfaces=id_W_Yupper),
    F.DirichletBC(field="T", value=373, surfaces=id_CuCrZr_inner),
]
my_model.boundary_conditions.extend(boundary_conditions)

View by Paraview:
image

If my_model.T = F.Temperature(873) is deleted, the simulation will have no ‘source’. So how can I make 1200 K at id_W_Yupper and 373 K at id_CuCrZr_inner be the source of my model?

Thank you!

2

Hi Xin,

Consider using the HeatTransferProblem class instead of Temperature(). See this section of the User Guide for more information.

3

Thanks a lot! I’ll try.