How can I pin the fluid-solid contact line in OpenFOAM?

[member 428835]

Hi PF!

Does anyone know how to pin the fluid-solid contact line in OpenFOAM? There has to be a way to do this, and I've tried the cfd-online community but they're largely inactive and consequently no one has replied to my question.

Any help or guidance is greatly appreciated!

 

[Achy47]

Hello,

There are a few different ways to pin the fluid-solid contact line in OpenFOAM, depending on your specific simulation setup and needs. Here are a few suggestions:

1. Use the "fixedValue" boundary condition: This is the simplest method, where you can specify a fixed value for the contact line. You can set this boundary condition for both the fluid and solid boundaries at the contact line.

2. Use the "fixedGradient" boundary condition: This method allows you to specify a fixed gradient for the contact line. This can be useful if you want to simulate a moving contact line or if you want to control the rate of change of the contact line position.

3. Use a custom boundary condition: If the above methods don't suit your needs, you can create a custom boundary condition that specifically pins the contact line in the desired location. This requires some coding knowledge, but there are resources available online that can guide you through the process.

I hope this helps. If you have any further questions or need more specific guidance, please let me know. Good luck with your simulation!