How do you simulate air movement in a violin?

Simulation Generality
1

Hi all

Here is my question:

I would like to obtain the different modes of vibration of the air (modal analysis) inside a violin, when the violin itself is vibration at one of its natural frequencies. To do this, I drew the sound box of a violin on SolidWorks 2016, but since I know very little about Flow Simulation, I start my calculations on a simple box, to which I added a harmonic bar, a core, and two holes that replace the violin's soundholes.

I performed a frequency analysis of the gearbox of which here is the second mode of vibration. What interests me are the movements of the air, especially inside the box, when the violin (the box) vibrates at this frequency (156 Hz).

As I said, I hardly know anything about Flow Simulation, and I have no idea how to go about achieving such a result. I have attached the files of my 3D model and my frequency analysis.

 

Thank you for your help,

Raph.


boite_carree.zip
2

Hello

If I understand the question correctly, it doesn't really sound like a fluid flow problem. So I'm not sure that the choice of tool is good in this case.

On the other hand, the frequency analysis does not give a result that takes into account the starting excitation . So the deformations displayed are purely indicative. So we can't even deduce a change in volume in the box.

So, sorry, I don't have a real answer to this question, but I'm afraid that the method to be applied is still more complex than imagined.