Physics:Duct modes

From HandWiki
Revision as of 04:29, 12 July 2022 by imported>TextAI (url)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Short description: None

The acoustic pressure in a cylindrical duct can be expressed as the superposition of duct modes:

[math]\displaystyle{ p = \sum \alpha_i \phi_i }[/math]

where [math]\displaystyle{ \alpha_i }[/math] is the participation factor or modal amplitude and [math]\displaystyle{ \phi_i }[/math] is the mode shape. The duct mode shape are analytically determined from the solution of the Helmholtz equation.[1]

References