# Axial Power distribution of a detailed SFR **URL:** \ **Category:** User Support\ **Created:** [March 29, 2022, 11:22am UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875 "2022-03-29T11:22:25Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![LagrangeW](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/lagrangew/32/2246_2.png) [@LagrangeW](https://openmc.discourse.group/u/LagrangeW)\ **Post date:** [March 29, 2022, 11:22am UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/1 "2022-03-29T11:22:26Z")
Hello! I’ve constructed a hexagonal assembly core model like that SFR example, and I’ve tallied the power distribution of each assembly using DistribCell filter, and have found the hottest assembly, but how can I tally the axial power distribution of one of the assemblies? I didn’t see any filter could divide the cell into many floors. ---
**Author:** ![mkreher13](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/mkreher13/32/4093_2.png) [@mkreher13](https://openmc.discourse.group/u/mkreher13)\ **Post date:** [March 29, 2022, 10:35pm UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/2 "2022-03-29T22:35:26Z")
Hi, I think a mesh filter using a 3D mesh will do the job. Just specify how many “floors” or mesh cells you need in the z-direction. Best, Miriam ---
**Author:** ![LagrangeW](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/lagrangew/32/2246_2.png) [@LagrangeW](https://openmc.discourse.group/u/LagrangeW)\ **Post date:** [March 30, 2022, 2:16am UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/3 "2022-03-30T02:16:22Z")
Thanks for your reply Miriam! I was thinking about using meshfilter at first, while couldn’t find a proper build-in mesh generator (like regular mesh) fit a hexagonal assembly. Must I use unstructured mesh? Thanks! ---
**Author:** ![imtiaj\_hossain](https://avatars.discourse-cdn.com/v4/letter/i/90db22/32.png) [@imtiaj\_hossain](https://openmc.discourse.group/u/imtiaj_hossain)\ **Post date:** [March 30, 2022, 1:47pm UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/4 "2022-03-30T13:47:39Z")
I think you can use rectangular mesh to cover the whole geometry. There will be some places which is outside of your actual geometry. But because of that, there will be no flux or fission occuring, so it wont effect your calculation i guess. ---
**Author:** ![mkreher13](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/mkreher13/32/4093_2.png) [@mkreher13](https://openmc.discourse.group/u/mkreher13)\ **Post date:** [March 30, 2022, 5:47pm UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/5 "2022-03-30T17:47:43Z")
There isn’t a hexagonal mesh, but you can get creative with how you will hone in on the exact area you nee using a rectangular mesh as suggested by imtiaj\_hossain. I don’t have any experience with unstructured mesh, so I can’t comment on that. ---
**Author:** ![LagrangeW](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/lagrangew/32/2246_2.png) [@LagrangeW](https://openmc.discourse.group/u/LagrangeW)\ **Post date:** [March 31, 2022, 5:11am UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/6 "2022-03-31T05:11:07Z")
Thank you very much for your explanation, It was great help! ---
**Author:** ![LagrangeW](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/lagrangew/32/2246_2.png) [@LagrangeW](https://openmc.discourse.group/u/LagrangeW)\ **Post date:** [March 31, 2022, 5:12am UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/7 "2022-03-31T05:12:12Z")
That was useful advice, thanks for your patience! ---
**Author:** ![fyh\_sinap](https://avatars.discourse-cdn.com/v4/letter/f/ed655f/32.png) [@fyh\_sinap](https://openmc.discourse.group/u/fyh_sinap)\ **Post date:** [March 31, 2022, 5:23am UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/8 "2022-03-31T05:23:24Z")
Maybe you have to divide the hexagonal into several cell instance.So your geometry will be rebuild.Then you can use cellfilter ---
**Author:** ![LagrangeW](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/lagrangew/32/2246_2.png) [@LagrangeW](https://openmc.discourse.group/u/LagrangeW)\ **Post date:** [March 31, 2022, 6:56am UTC](https://openmc.discourse.group/t/axial-power-distribution-of-a-detailed-sfr/1875/9 "2022-03-31T06:56:29Z")
This method is also feasible, while kinda troublesome I think. I will use this method if there is no other easier way. Thanks a lot!