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

Posted 17 oct. 2022, 03:40 UTC−4 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 18 oct. 2022, 07:47 UTC−4
Dave Greve
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Posted: 2 years ago 17 oct. 2022, 19:17 UTC−4

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 18 oct. 2022, 07:47 UTC−4

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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