Simulating ultrasonic levitation with openlb

[HeLiu]

Recently I wanted to use openlb to simulate ultrasonic levitation phenomena, and I’m running out of ideas. Has anyone done this before and I look forward to your suggestions.

[Adrian]

A good start would be to share the thoughts you had before you ran out of ideas.

What exactly do you want to model? Is there existing literature? …

[HeLiu]

Thanks for the reminder that I have to simulate the phenomenon of droplet suspension in a standing wave field.
Investigation and validation of the dynamic response of an acoustically levitated particle using the lattice Boltzmann method
https://doi.org/10.1063/5.0020563

[Adrian]

Ok, so a first step could be to invest some thoughts into what specific LB model(s) you want to use in your simulation. After that we can see whether OpenLB already implements them, or if they are straight forward to add, or if there alternatives available.

[HeLiu]

Thank you for your reply, I now have a few questions that I need your answers to:
1. each example of openlb is a cpp file, is there any way I can check it visually when I finish setting the geometry or material count?
2. is there a boundary condition in openlb that corresponds to a perfectly matched layer (PML)?

[Adrian]

1: The example cases commonly export the material geometry as a VTK file, you can visualize it in e.g. Paraview. The material counts are printed in the terminal output.

2: I am not familiar with that BC, somebody else might have an answer. In any case: Did you find existing literature on this BC in LBM?

[Author]

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