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how can I introduce the air damping in the piezoelectric energy harvester

Posted Oct 17, 2022, 3:40 a.m. EDT Geometry, Mesh, Physics Interfaces 2 Replies

Rahul Kumar Gupta
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I am simulating a piezoelectric energy harvester. Can someone help me , how can I introduce the air damping in the structure? Thanx in advance

2 Replies Last Post Oct 18, 2022, 7:47 a.m. EDT
Dave Greve Certified Consultant
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Posted: 2 years ago Oct 17, 2022, 7:17 p.m. EDT

You would need to use the Laminar Flow physics.

You would need to use the Laminar Flow physics.
Henrik Sönnerlind COMSOL Employee

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Posted: 2 years ago Oct 18, 2022, 7:47 a.m. EDT

Depending on the exact physical properties of the damping, and your geometry, there are also other possiblilties.

If the air damping comes from a thin air layer, the Thin-Film Flow interface may be an option.

Also, using acoustics rather than full fluid mechanics may be an option.

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Henrik Sönnerlind
COMSOL
Depending on the exact physical properties of the damping, and your geometry, there are also other possiblilties. If the air damping comes from a thin air layer, the Thin-Film Flow interface may be an option. Also, using acoustics rather than full fluid mechanics may be an option.

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