# Coupling of FLAC3D v9 and PFC v7

**URL:** <https://forum.itascainternational.com/t/coupling-of-flac3d-v9-and-pfc-v7/1155>\
**Category:** FLAC\
**Tags:** faq\
**Created:** [September 4, 2023, 6:33am UTC](https://forum.itascainternational.com/t/coupling-of-flac3d-v9-and-pfc-v7/1155 "2023-09-04T06:33:56Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Mussie](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.itascainternational.com/mussie/32/360_2.png) [@Mussie](https://forum.itascainternational.com/u/Mussie)\
**Post date:** [September 4, 2023, 6:33am UTC](https://forum.itascainternational.com/t/coupling-of-flac3d-v9-and-pfc-v7/1155/1 "2023-09-04T06:33:56Z")

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Dear ITASCA-Team,  
is coupling between FLAC3D v9 and PFC v7 still possible and are the examples from the documentation still applicable?

Regards

Mussie

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**Author:** ![ndahlhaus](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.itascainternational.com/ndahlhaus/32/123_2.png) [@ndahlhaus](https://forum.itascainternational.com/u/ndahlhaus)\
**Post date:** [September 4, 2023, 7:40am UTC](https://forum.itascainternational.com/t/coupling-of-flac3d-v9-and-pfc-v7/1155/2 "2023-09-04T07:40:53Z")

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Dear Mussie,

unfortunately coupling in FLAC3D V9.0 is currently not available (for models exceeding the particle count of the PFC demo), as it is exclusively compatible with PFC V9.0, for which we currently do not offer licenses. We kindly recommend using FLAC3D / PFC V7.0 for coupled simulations.

Best wishes,  
Nils

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**Author:** ![Mussie](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.itascainternational.com/mussie/32/360_2.png) [@Mussie](https://forum.itascainternational.com/u/Mussie)\
**Post date:** [September 4, 2023, 11:01am UTC](https://forum.itascainternational.com/t/coupling-of-flac3d-v9-and-pfc-v7/1155/3 "2023-09-04T11:01:36Z")

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Thank you very much Nils for the quick response!

Regards  
Mussie

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**Author:** ![aghanem](https://avatars.discourse-cdn.com/v4/letter/a/7feea3/32.png) [@aghanem](https://forum.itascainternational.com/u/aghanem)\
**Post date:** [March 18, 2025, 12:39am UTC](https://forum.itascainternational.com/t/coupling-of-flac3d-v9-and-pfc-v7/1155/4 "2025-03-18T00:39:36Z")

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May I ask if coupling is available for V5.0 or not? if yes, can I load FLAC into PFC or does it need to be the other way around?

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**Author:** ![Mussie](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.itascainternational.com/mussie/32/360_2.png) [@Mussie](https://forum.itascainternational.com/u/Mussie)\
**Post date:** [March 18, 2025, 9:23am UTC](https://forum.itascainternational.com/t/coupling-of-flac3d-v9-and-pfc-v7/1155/5 "2025-03-18T09:23:45Z")

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Dear [aghanem](https://forum.itascainternational.com/u/aghanem), from what I know this should work with V7 onwards and not below (so V5.0 should not work). In case you use V7 - I think you can go both ways. Using the PFC plugin in FLAC or using the FLAC plugin within PFC. I hope this is of help - if you dont have Version 7 or higher you can maybe counsel ITASCA on possibilities for you to get access. Have a great day