Re: [Libmesh-users] [RB] Question about "output assembly"

[David K. <dav...@ak...>]

On Fri, Apr 27, 2018 at 6:09 AM, <ss...@pu...> wrote:

> Hello, all.
>
>
>
> I have a question about "output assembly."
>
>
>
> To estimate the error, I know that we need to define the "output assembly"
> like "A0 assembly" and "F0 assembly" in the RB code.
>
> However, the RB example 5 does not have this code, so I do not know how the
> error is handled in the RB example 5.
>
>
>
> If we do not define the "output assembly," does the libMesh automatically
> perform the compliant problem?, i.e., "F0 assembly" = "output assembly?"
>



RB example 5 does not use an output. If you want to see how to define an
output, refer to RB example 1, for example.

Outputs are not required, and they are certainly not required for the error
estimation. The standard error estimation gives an estimate of the error in
the solution (based on the dual norm of the residual) and if an output is
defined, its error bound is derived from the solution's error bound.

David