DOAJ Open Access 2023

The Estimation of Trapped Modes in a Cavity–Duct Waveguide Based on the Coupling of Acoustic and Flow Fields

Congcong Ma Pingping Niu Xinyu An

Abstrak

Trapped modes that exist in the waveguide have different engineering applications. Excited acoustic modes are due to the interaction between acoustic and flow fields. To further study the influence of nonpotential flow on trapped modes for a two-dimensional cavity–duct system, a numerical simulation method that combines the finite-element method (FEM) associated with a mixed formulation of the Galbrun equation and computational fluid dynamics (CFD) is proposed. The calculation model is composed of a two-dimensional waveguide with cavities and perfectly matched layers (PMLs) to limit the computational domain. The effects of the Mach number and different cavity lengths on the resonance modes are investigated.

Topik & Kata Kunci

Technology Engineering (General). Civil engineering (General) Biology (General) Physics Chemistry

Penulis (3)

Congcong Ma

Pingping Niu

Xinyu An

Format Sitasi

APA MLA BibTeX

Ma, C., Niu, P., An, X. (2023). The Estimation of Trapped Modes in a Cavity–Duct Waveguide Based on the Coupling of Acoustic and Flow Fields. https://doi.org/10.3390/app13031489

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.3390/app13031489
Akses: Open Access ✓