The Estimation of Trapped Modes in a Cavity–Duct Waveguide Based on the Coupling of Acoustic and Flow Fields
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Aerodynamics and Acoustics in Jet Flows · Fluid Dynamics and Vibration Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Marine Science and Technology College, Zhejiang Ocean University, Zhoushan 316022, China
Institute of Ocean Engineering and Technology, Ocean College, Zhejiang University, Zhoushan 316021, China
Funding
Talent Introduction Research Fund
References (22)
Show source-provided references
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