Simulation of Helicopter Vortex Ring state

[dave]

Hello everyone,

I am a Master Thesis student in advacnced numerical methods for CFD and I am willing to perform simulations with open LB using Lattice Boltzmann scheme, that I hope to stabilize with its Entropic version to make it suitable for high Re applications. I am looking for an efficient way to handle rotating blades. My idea would be to put the reference system on the rotor (moving with blades) in order NOT to re-framing at each iterations and thus re-defining the domain where fluid “lives” (very expensive due to high rotational speed). Instead I would like to apply some evolutionary boundary condition in order to correctly simulate the flow, from the point of view of the rotor. I attach an article I looked at that makes use of open LB, but to my kind it’s not clear which type of boundary openLB-function they used. Not being very experienced with such library, would you mind giving me some advice?

article:
https://arc.aiaa.org/doi/10.2514/6.2013-2573

The article could be protected, depending on your association type. In case I can share it.

Thanks.

Dave

• This topic was modified 5 months, 1 week ago by dave.

[mathias]

That was indeed done with OpenLB. Here the authors has just applied a simple Bouzide boundary condidition. No need for a moving frame approach or similar..

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