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how to setting proper acoustic boundary condition

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hello every one...

I have an ultrasonic horn in a bulk of water( with power=300w & 30 kHz frequency).
what boundary condition is proper for this case? and how to set this power and frequency for this problem?
my problem is 2D.
the horn is a rectangular.what boundary condition is proper for modeling this horn?(side walls and tip of the horn)

can every one help me?

thx alot.
shahram

0 Replies Last Post Feb 15, 2010, 8:30 a.m. EST
COMSOL Moderator

Hello shahram niazi

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