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[Jan Stránský <question404284@xxxxxxxxxxxxxxxxxxxxx>]

Question #404284 on Yade changed:
https://answers.launchpad.net/yade/+question/404284

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Liu,

in the previous answer, I got feeling that you ask only about efficiency.
In that case, it should be compared with full simulation.

If you compare physical results, than you can compare it with RVE
representation using PBC if you expect they are representative enough. But
in that case also the efficiency should be compared to this reduced
problem, or? :-)

I think the reduced problem can be used for comparison of physical results,
but there should be another problem, where the situation cannot be such
simplified and where the coupling is really beneficial.

cheers
Jan



2016-11-22 14:53 GMT+01:00 liukeqi <question404284@xxxxxxxxxxxxxxxxxxxxx>:

> Question #404284 on Yade changed:
> https://answers.launchpad.net/yade/+question/404284
>
>     Status: Answered => Open
>
> liukeqi is still having a problem:
> Hi Jan,
>
>    You mean that I shoud use the common boundary and large DEM sample
> rather than periodic boundary and small DEM RVE.
>
>    But if periodic boundary can simulate the response approximating the
> large system, why do not use it?
>
>    I can explain that the large system costs too much to simulate, but
> the result is same as RVE using periodic boundary. So we can compare the
> results between RVE and coupled method, and if they are basically the
> same, then we can prove the coupled method is percise and efficient. My
> explanation is correct or not?
>
> Liu
>
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