# Solution diverged, but no mesh errors

**URL:** <https://www.simscale.com/forum/t/solution-diverged-but-no-mesh-errors/86422>\
**Category:** Project Support\
**Created:** [September 29, 2019, 6:44pm UTC](https://www.simscale.com/forum/t/solution-diverged-but-no-mesh-errors/86422 "2019-09-29T18:44:08Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![pfernandez](https://www.simscale.com/forum/user_avatar/www.simscale.com/pfernandez/32/27697_2.png) [@pfernandez](https://www.simscale.com/forum/u/pfernandez)\
**Post date:** [October 8, 2019, 8:40pm UTC](https://www.simscale.com/forum/t/solution-diverged-but-no-mesh-errors/86422/20 "2019-10-08T20:40:35Z")

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Awesome. It’s great to see that simulation is running ok.

For the outlet, you could define a custom `zeroGradient` for all variables. This way you ensure that the flow leaves the outlet as soon as it gets there.

I’m also trying with other boundary condition combinations. Will let you know if I find a successful one.

Cheers,

**PS** : I requested the activation of an inlet boundary condition specific to multiphase flows that could be useful in this project.  
🗳 You can vote [here](https://www.simscale.com/forum/t/add-variableheightflowrate-inlet-boundary-condition/86515)

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