嗨远杰:
If you don't mind volumetric estimates, USRBIN serves the very purpose of
sparing us from tedious geometry grid-ing. For this to be applicable,
periodicity is needed in your grid-ing.
If you specifically want a surface (rather than a volumetric) estimate of the
fluence or the current, you can use mgdraw.f:
- define an array of your own (properly speaking, also an accompanying second
array for tracking the error);
- at every boundary crossing (this is the more efficient option) or every step
(in case you didn't define the boundaries in your geometry), compute your bin
number according to the coordinates or the region number/name;
- increment your array element with the index equal to the bin number computed
above.
If your boundaries can be spatially described by analytical periodicity of some
sort, then one expression could do the trick, even without using any
conditionals (if-then), without assigning the boundaries one by one.
Intercepting at every step (mgdraw.f body itself, top part, before the ENTRies)
naturally takes more time than intercepting at boundary crossing (ENTRY BXDRAW)
- decide what works best for you.
:) mary
> On 11 June 2015 at 00:07 毕远杰 <biyuanjie_at_tsinghua.org.cn> wrote:
>
>
> Dear fluka users,
>
> I want to use USRBDX to record the double differential current. But I need to
> devide the boundary surface into 20*20 grids and record the current in each
> segment. Even I know I can use the usr routine fluscw.f, but it needs too many
> USRBDX cards(20*20=400) to do this. Does anyone have other good methods?
>
> Many thanks
> Best wishes
> Yuanjie BI
>
>
>
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Received on Fri Jun 12 2015 - 06:45:06 CEST