Re: [deal.II] Location for Boundary Condition Application

[Wolfgang Bangerth]

On 7/23/20 11:47 AM, Daniel Arndt wrote:

McKenzie,

I'm interested in applying a non-homogeneous Dirichlet boundary condition
to a specific edge. However, I'm unsure how to identify or specify a
particular edge or face to add the boundary condition to. Could you help
clear this up for me?


What do you know about that particular edge? You can always ask faces or 
edges, e.g., about their midpoints. Have a look at 
https://www.dealii.org/current/doxygen/deal.II/step_6.html#Abettermesh 
.


And here:
https://github.com/bangerth/dealii/blob/66/examples/step-19/step-19.cc#L303-L317
for an example where I'm setting different boundary indicators depending on 
the location of a face. These boundary conditions are then used when 
interpolating different boundary conditions here:

https://github.com/bangerth/dealii/blob/66/examples/step-19/step-19.cc#L340-L354
This is eventually going to become step-19.

Best
 W.
--

Wolfgang Bangerth  email: bange...@colostate.edu
   www: http://www.math.colostate.edu/~bangerth/

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Re: [deal.II] Location for Boundary Condition Application

[Daniel Arndt]

McKenzie,

I'm interested in applying a non-homogeneous Dirichlet boundary condition
> to a specific edge. However, I'm unsure how to identify or specify a
> particular edge or face to add the boundary condition to. Could you help
> clear this up for me?


What do you know about that particular edge? You can always ask faces or
edges, e.g., about their midpoints. Have a look at
https://www.dealii.org/current/doxygen/deal.II/step_6.html#Abettermesh.

Best,
Daniel

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[deal.II] Location for Boundary Condition Application

[McKenzie Davis]

Hello! 

I'm interested in applying a non-homogeneous Dirichlet boundary condition 
to a specific edge. However, I'm unsure how to identify or specify a 
particular edge or face to add the boundary condition to. Could you help 
clear this up for me?

Thank you for your help,

McKenzie

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