Help on creating simulation of a solid falling into water?

[Dan rowling]

So, I am trying to simulate a solid falling into water. But, I don’t know which model should I work on. I tried to modify the falling drop 2d case. But, cant modify it as expected. One problem is how to set boundary condition to moving solid? Should I do it on supergeometry or a separate class like fallingdrop. Also, for solid fluid interaction which model should I choose?

[stephan]

Dear Dan,

as you describe it, your application would have to at least use a two-component (e.g. Shan-Chen or Free energy) or free surface model coupled to a particle model (e.g. HLBM).

Please consider joining the Consortium (https://www.openlb.net/consortium/) or visiting our Spring School (https://www.openlb.net/spring-school-2025/) to get extended support for this.

BR
Stephan

[mmp22squ@uea.ac.uk]

Dear Stephan,

I hope you are doing fine .

I am reaching out to seek your guidance regarding coupling particle models to the free-energy approach within the lattice Boltzmann framework. Over time, my understanding and experience with lattice Boltzmann methods have improved significantly, and I am now confident in understanding the individual implementation of different models.

However, I am currently facing challenges in achieving a proper coupling of models. Would you be able to recommend a tutorial or any reference material that provides clear guidance on coupling different models in the lattice Boltzmann method? Any resources, examples, or advice on this topic would be highly appreciated.

[mathias]

This is a quite involving plan.. it goes beyond the scope of a forum. However, there are several ways to get support:
1/ Spring School
2/ Consortium/Support Licence
3/ Common Research Project

See https://www.openlb.net/consortium/ .

[Author]

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