# Flow Region Set Up not working

**URL:** <https://www.simscale.com/forum/t/flow-region-set-up-not-working/100573>\
**Category:** Project Support\
**Created:** [December 5, 2025, 7:52pm UTC](https://www.simscale.com/forum/t/flow-region-set-up-not-working/100573 "2025-12-05T19:52:34Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Ricardopg](https://www.simscale.com/forum/user_avatar/www.simscale.com/ricardopg/32/26909_2.png) [@Ricardopg](https://www.simscale.com/forum/u/Ricardopg)\
**Post date:** [December 7, 2025, 10:50am UTC](https://www.simscale.com/forum/t/flow-region-set-up-not-working/100573/4 "2025-12-07T10:50:19Z")

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Hi, my suggestion was to create the _full_ flow region first, and then split it.

 ![image](https://www.simscale.com/forum/uploads/default/original/3X/d/1/d12117fcd7f6c88ce0914f03e9e4b88dbd3587a3.png)

 ![image](https://www.simscale.com/forum/uploads/default/original/3X/4/6/461ea96ac2f51aaed42648f416b193c522920737.png)

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_[View the full topic](https://www.simscale.com/forum/t/flow-region-set-up-not-working/100573)._