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Acoustics
Special Issues
Duct Acoustics
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Duct Acoustics

A special issue of Acoustics (ISSN 2624-599X).

Deadline for manuscript submissions: 28 November 2024 | Viewed by 1364

Special Issue Editors

Dr. Olavo M. Silva

E-Mail Website
Guest Editor
Laboratory of Vibration and Acoustics, Federal University of Santa Catarina, Florianopolis 88040-900, SC, Brazil
Interests: metamaterials; acoustic filters; acoustic design; oil and gas pipeline; shell radiation; optimization
Prof. Dr. Phillip F. Joseph

E-Mail Website
Guest Editor
Institute of Sound and Vibration Research, University of Southampton, Southampton SO17 1BJ, UK
Interests: broadband fan noise; shallow water acoustics; active noise control; duct acoustics

Special Issue Information

Dear Colleagues,

This Special Issue aims to highlight the state of the art in duct acoustics by collecting research on the most relevant issues in the present and future applications of this topic.

The authors are invited to present research that underscores the significance of investigating duct acoustics for various applications involving ducted systems, and of develo** effective strategies to minimize noise transmission. This Special Issue aims to emphasize the crucial role of duct acoustics in enhancing noise control, leading to improved operational efficiency, reduced acoustic pollution, and enhanced overall system performance. Understanding duct acoustics is vital for creating quieter and more efficient ducted systems across diverse industries and applications.

In this Special Issue, original research articles and reviews are welcome. Topics of interest may include (but are not limited to) the following:

  • Numerical methods for acoustic systems simulation.
  • Acoustic design and optimization of acoustic systems.
  • Experimental procedures.
  • New methods for acoustic efficiency evaluation.
  • Metamaterials.
  • Passive noise control.
  • Active noise control.
  • Noise control of exhaustion systems.
  • Pulsation analysis and control of oil and gas pipeline systems.
  • Real-time digital twin.

We look forward to receiving your contributions.

Dr. Olavo M. Silva
Prof. Dr. Phillip F. Joseph
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at mdpi.longhoe.net by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Acoustics is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fluid–structure interaction
  • turbulent flow
  • pulsation
  • numerical methods
  • analytical methods
  • experimental methods
  • acoustic optimization
  • robust design
  • passive noise control
  • resonators
  • acoustic filters
  • porous materials
  • metamaterials
  • active noise control
  • exhaustion system
  • pipeline systems

Published Papers (2 papers)

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Research

18 pages, 1966 KiB  
Article
Measurement and Simulation of the Propagation of Impulsive Acoustic Emission Sources in Pipes
by Chika Judith Abolle-Okoyeagu, Samuel Fatukasi and Bob Reuben
Acoustics 2024, 6(3), 620-637; https://doi.org/10.3390/acoustics6030034 (registering DOI) - 30 Jun 2024
Viewed by 244
Abstract
Abstract: Acoustic Emission (AE) testing is a non-destructive evaluation technique that has gained significant attention in pipeline monitoring. Pencil-lead breaks (PLBs) are commonly used in reproducing and characterising sensors used in AE applications and have emerged as a valuable tool for calibration processes. [...] Read more.
Abstract: Acoustic Emission (AE) testing is a non-destructive evaluation technique that has gained significant attention in pipeline monitoring. Pencil-lead breaks (PLBs) are commonly used in reproducing and characterising sensors used in AE applications and have emerged as a valuable tool for calibration processes. This technique involves breaking a pencil lead by pressing it on the surface of the test structure and applying a bending moment at a given angle on a surface. The applied force produces a local deformation on the test surface, which is released when the lead breaks. The fracture in these PLBs is assumed to be a step unload; however, this is not the case. In this work, a series of PLB source experiments complemented with parallel numerical simulations were carried out to investigate the actual unload rate by correlating the relationship between AE speed, frequency, and power from PLBs. This was achieved by varying the simulation unload rates recorded over a duration of 2 s on a steel pipe and comparing to the experiment. Analysis of the investigated results from the experimental and numerical models suggests that although the AE line structure of a PLB can be reproduced by simulation for short times only (1 µs), the actual unload rate for PLBs is in the region of 10–8 s. It is concluded that FEA has the potential to help in the recovery of the temporal structure from real AE structures. The establishment of this model will provide a theoretical basis for future studies on the monitoring of non-impulsive AE sources such as impact on pipelines using finite element analysis. Full article
(This article belongs to the Special Issue Duct Acoustics)
18 pages, 32065 KiB  
Article
Prediction of Time Domain Vibro-Acoustic Response of Conical Shells Using Jacobi–Ritz Boundary Element Method
by Cong Gao, Jiajun Zheng, Fuzhen Pang, Jiawei Xu, Haichao Li and Jibing Yan
Acoustics 2024, 6(2), 523-540; https://doi.org/10.3390/acoustics6020028 - 31 May 2024
Viewed by 400
Abstract
Considering the lack of studies on the transient vibro-acoustic properties of conical shell structures, a Jacobi–Ritz boundary element method for forced vibro-acoustic behaviors of structure is proposed based on the Newmark-β integral method and the Kirchhoff time domain boundary integral equation. Based on [...] Read more.
Considering the lack of studies on the transient vibro-acoustic properties of conical shell structures, a Jacobi–Ritz boundary element method for forced vibro-acoustic behaviors of structure is proposed based on the Newmark-β integral method and the Kirchhoff time domain boundary integral equation. Based on the idea of the differential element method and the first-order shear deformation theory (FSDT), the vibro-acoustic model of conical shells is established. The axial and circumferential displacement tolerance functions are expressed using Jacobi polynomials and the Fourier series. The time domain response of the forced vibration of conical shells is calculated based on the Rayleigh–Ritz method and Newmark-β integral method. On this basis, the time domain response of radiated noise is solved based on the Kirchhoff integral equation, and the acoustic radiation characteristics of conical shells from forced vibration are analyzed. Compared with the coupled FEM/BEM method, the numerical results demonstrate the high accuracy and great reliability of this method. Furthermore, the semi-vertex angle, load characteristics, and boundary conditions related to the vibro-acoustic response of conical shells are examined. Full article
(This article belongs to the Special Issue Duct Acoustics)
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