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Perturbation Acoustics. No velocity values
Posted May 27, 2015, 4:42 a.m. EDT Acoustics & Vibrations Version 5.1 1 Reply
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Hi,
I have created a mechanical & acoustic prestressed frequency-domain study. It can solve but cannot obtain velocity in acpr.
With my test, it turns out that the same issue happens at single acoustics model. The model attached has a pipe with pressure at an end and solves it with prestressed study. (I know the step1 is meaningless at this example model. Just for test. )
At result graphs, I can get p value but no acpr.v_inst and any other acpr.* values. Even p*p cannot be evaluated.
On the other hand, a normal frequency-domain study solves well.
Are there any my setting mistakes or bugs?
Regards,
Seki
I have created a mechanical & acoustic prestressed frequency-domain study. It can solve but cannot obtain velocity in acpr.
With my test, it turns out that the same issue happens at single acoustics model. The model attached has a pipe with pressure at an end and solves it with prestressed study. (I know the step1 is meaningless at this example model. Just for test. )
At result graphs, I can get p value but no acpr.v_inst and any other acpr.* values. Even p*p cannot be evaluated.
On the other hand, a normal frequency-domain study solves well.
Are there any my setting mistakes or bugs?
Regards,
Seki
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1 Reply Last Post Jun 12, 2015, 9:52 a.m. EDT
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Posted:
10 years ago
Hello Seki,
The Compute differential check box should not be marked in your plots. For quantities that are linear, like p, the two options are the same.
Kind regards,
Elin
The Compute differential check box should not be marked in your plots. For quantities that are linear, like p, the two options are the same.
Kind regards,
Elin