[Weegie]

Hi all!

I am currently investigating the Aeroacoustic functionality within Star CCM+. I have been looking into aeroacoustics for a while now and have gotten accustomed to common techniques for simulating aeroacoustics.

IMO, from what I've seen, the most efficient way to simulate aeroacoustics is to use the hybrid approach with the one way coupling between the aerodynamic domain and the aeroacoustic domain. This simulation option is available in Star CCM+ under the Acoustic Wave Solver.

I am wondering if it is possible to create 2 separate meshes for domains of different sizes and interface them within Star CCM+. For example you would have a aerodynamic domain where you would solve your flow field (with LES of whatever you chose) and link that information (potentially through an interface) onto a larger domain with a far coarser mesh to model the acoustics, with the Acoustic Perturbation Equations (APEs). As far as I can tell you must model the aerodynamics and aeroacoustics on the same mesh, which is very inefficient.

If they could be separated this would boost the efficiency of all simulations significantly as the aerodynamic domain requirements are vastly different from the acoustic domain requirements.

Does anyone know if this is possible within Star CCM+?

Thanks