Menu

Discussion Forum

New Discussion
查找

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Acoustic resonance in a closed tube

Posted 2014年10月15日 GMT-4 17:18 Acoustics & Vibrations Version 4.4 2 Replies

Edvin Golestanyan
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Dear All,
I am trying to simulate acoustic resonance in a closed end tube.
I have attached my model, the incident sound pressure should be 3pa, and the resonance frequency should be around 198 hz.

How should I model the boundary conditions?

Thank you,


Attachments:

2 Replies Last Post 2015年5月13日 GMT-4 13:42
COMSOL Moderator

Hello Edvin Golestanyan

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

冠 王
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 10 years ago 2015年5月13日 GMT-4 00:58
your model maybe have some error when I open it
there is just a tube and a cylinder filled in it.
And you did not assign the material Parameters about the filler in the tube

I think you can give more information that may have more help
your model maybe have some error when I open it there is just a tube and a cylinder filled in it. And you did not assign the material Parameters about the filler in the tube I think you can give more information that may have more help
Jeff Hiller COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 10 years ago 2015年5月13日 GMT-4 13:42
Also, your geometry steps are unnecessarily complicated: you subtract cylinder1 and then you add it right back, what's the point? Just draw the two cylinders and you're done. You can read on geometry creation in the Reference Guide, Chapter 7.
Jeff
Also, your geometry steps are unnecessarily complicated: you subtract cylinder1 and then you add it right back, what's the point? Just draw the two cylinders and you're done. You can read on geometry creation in the Reference Guide, Chapter 7. Jeff

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content