[aspect-devel] Boundary Temperature

[FELIPE ORELLANA ROVIROSA]

Hi,

    I have tried implementing this Dirichlet temperature boundary function,
but I am simply not succeeding. It seems there is something wrong on the
syntax, a declaration, but I cannot detect it after reading the handbook
specifics.

On the model settings I have:
   subsection Model settings
  set Fixed temperature boundary indicators  = bottom, top

And on the temperature subsection I have:

  subsection Boundary temperature model
  set Model name = function

  subsection function
    set Variable names      = x,y,z
    set Function expression = if(z<=0, 1500  + 200*exp(-(16/(2.5e11))*(
(x-6e5)^2 + (y-4e5)^2 ) ) , 300)
 end
end

I have tried permuting the order of the two separate statements (setting
vs. subsection). I have double-checked that I have no other temperature
statements except only for 'Temperature solver tolerance','Reference
temperature','temperature statistics'; and the Initial condition does not
contain the word temperature.

but everything fails stating that there is NO such subsection to be entered:

Line <114> of file <input string>: There is no such subsection to be
entered: Boundary temperature model.function
    subsection Boundary temperature model
      subsection function
Line <115> of file <input string>: No such entry was declared:
    Variable names
    <Present subsection:
        subsection Boundary temperature model
    >
Line <117> of file <input string>: No such entry was declared:
    Function expression
    <Present subsection:
        subsection Boundary temperature model
    >
Line <119> of file <input string>: There is no subsection to leave here!

hope you guys can help me,
cheers,

Felipe

On Tue, Jan 10, 2017 at 3:03 PM, FELIPE ORELLANA ROVIROSA <
f_orellana at berkeley.edu> wrote:

>
>  Hi all,
>
>     I am trying to prescribe a function as the temperature boundary
> condition, say inhomogeneous Dirichlet for the heat equation.
>
>     I guess the syntax must be rather simple, but I am not getting it. I
> have browsed and browsed examples unsuccessfully.
>
>   I am trying things of this kind:
>
>    subsection Model settings
>   set Fixed temperature boundary indicators   = top
>   set prescribed temperature boundary indicators = bottom: function
>
> subsection Boundary Temperature model
>   subsection Function
>     set Variable names      = x,y
>     set Function constants  =
>     set Function expression = 1500  + 200*exp(-(16/(2.5e11))*( (x-6e5)^2 +
> (y-4e5)^2 )
>  end
> end
>
>  and when trying to run it, the system complains:
>  Line <91> of file <input string>: No such entry was declared:
>     prescribed temperature boundary indicators
>     <Present subsection:
>         subsection Model settings
>
> ''invalid input parameter file''.
>
> hope someone can help me,
> cheers,
> Felipe
>
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