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Low-frequency acoustic attenuator based on a labyrinthine Helmholtz resonator
Low-frequency noise attenuation is a challenge in different engineering applications. This study investigates the effectiveness of a labyrinth-type...
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A Helmholtz Resonator Array for Low-Frequency Broadband Sound Absorption
Helmholtz resonators are widely used to reduce narrow frequency band noise. In this paper, an acoustic absorption structure based on Helmholtz...
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FEM Investigation of a Multi-neck Helmholtz Resonator
PurposeAn increasingly significant area of research with several applications in numerous disciplines is that of multi-neck Helmholtz resonators....
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Recent Advancements in Helmholtz Resonator Based Low-Frequency Acoustic Absorbers: A Critical Review
Helmholtz resonator (HR) is an elementary resonating structure predominantly used for acoustic wave manipulation. The sound absorption capabilities...
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Suppression of Thermo-acoustic Instability inside a Rijke Tube using an Adaptive Passive Helmholtz Resonator
Thermo-acoustic instability (TAI) inside a lean premix combustor is a major hurdle towards operation of gas turbines for both aerospace and land...
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Collaborative Optimization of Phononic Crystal Pipe Based on Revolving Helmholtz Resonators for Air Compressor System in FCEVs
PurposeThis study aims to design a Helmholtz resonator to realize the demand for control of high-frequency noise in air compressors.
Methods ...
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Design of flat broadband sound insulation metamaterials by combining Helmholtz resonator and fractal structure
A new sound insulation metamaterial (SIM) is designed by combining a Helmholtz resonator and a fractal structure for sound insulation in the...
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A Helmholtz Resonator-Based Acoustic Metamaterial for Power Transformer Noise Control
Controlling low-frequency noise propagated by power transformers in urban and industrial areas poses a technical challenge in the design of sound...
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Investigation on the Acoustic Performance of Multiple Helmholtz Resonator Configurations
Helmholtz resonator is considered and widely accepted as a basic acoustic model in engineering applications and research. In this paper, the normal...
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Analytical Approximation of Forced Oscillations of Nonlinear Helmholtz Resonator by Homotopy Analysis Method
This study investigates nonlinear amplitude-frequency response of an acoustic nonlinear Helmholtz Resonator (HR) by taking into account nonlinear...
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Fano Resonance in a Defective Network Formed by Helmholtz Resonators with Extended Necks
The Helmholtz resonator has been extensively used to attenuate narrowband low-frequency noise in a variety of industrial applications. Theoretical...
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Low-Frequency BG Analysis and Structural Optimization of Toroidal Helmholtz Phononic Crystal
AimsThe low-frequency band gap characteristics of the Toroidal Helmholtz phononic crystal (THPC) are investigated, the sound pressure distribution...
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Adjustable and extensible hexagonal acoustic metamaterial cell combining multiple parallel Helmholtz resonators with optional apertures
To prevent noise pollution, a hexagonal acoustic metamaterial cell combining multiple parallel Helmholtz resonators with optional apertures is...
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Performance comparison of a standing-wave thermoacoustic engine with different resonator shapes with air working gas
The resonator is one of the key components of thermoacoustic machines and the choice of its geometry is of course of crucial importance, as it...
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Investigation of Nonstationary Gas-Dynamical Characteristics in the Resonator Cavity
Mathematical simulation of a nonstationary flow of an ideal gas in the resonator cavity is presented. The influence of the resonator depth on the...
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Semi-analytical estimation of Helmholtz resonators’ tuning frequency for scalable neck-cavity geometric couplings
Innovative meta-materials offer great flexibility for manipulating sound waves and assure unprecedented functionality in the context of acoustic...
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Single-structure 3-axis Lorentz force magnetometer based on an AlN-on-Si MEMS resonator
This work presents a single-structure 3-axis Lorentz force magnetometer (LFM) based on an AlN-on-Si MEMS resonator. The operation of the proposed LFM...
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Research on vibration reduction of direct-drive piston pump based on porous variable diameter Helmholtz pulsation attenuator
Aiming at the vibration suppression and noise reduction of a direct-drive piston pump system, a novel porous variable diameter Helmholtz pulsation...
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Effect of flow on a dual Helmholtz resonator
The acoustic characteristics of a dual Helmholtz resonator in the presence of flow is investigated theoretically and experimentally. A lumped...
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Labyrinth Resonator Design for Low-Frequency Acoustic Meta-Structures
Acoustic meta-structure represents a class of composite structure characterized by local resonators that improve the sound absorption. In recent...