submerged(underwater) propeller natural frequency simulation 2

[suslu13]

Hİ all

I am using ANSYS. I can get the eigenvalues ( natural frequencies) of propeller in the air.

I dont know how to do a submerged analysis. If you have any tutorial or project, could you please share with me?

Should i use modal,modal acoustic or harmonic?

Best Regards
Seckin

 

[scheah]

Hi Seckin,

Try doing modal with coupling to some acoustic fluid elements. I've not done it myself but here's an example:
[URL unfurl="true"]https://www.sharcnet.ca/Software/Ansys/16.2.3/en-us/help/ans_acous/acouxmpacoustruccoupmod.html[/url]


Kind regards,
Jason

 

[suslu13]

Thanks Jason

Could you please share with me any video or document. I did not get correct solutions

 

[NRP99]

secking13

Check this [link iopscience.iop.org/article/10.1088/1755-1315/22/3/032042/pdf]paper[/url] and this [link e-collection.library.ethz.ch/eserv/eth:7837/eth-7837-02.pdf]thesis[/url].

Jason has given good starting point. But you need to validate your analysis frequencies with experimental results. Try searching published papers on submerged propeller natural frequencies like this.

 

[suslu13]

Thanks all for your answers.