Special Issue "Advances in Vibroacoustics and Aeroacustics of Marine, Aerospace and Automotive Systems"

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Acoustics and Vibrations".

Deadline for manuscript submissions: 15 January 2021.

Special Issue Editors

Dr. Luigi Federico
Website
Guest Editor
Head of Environmental Impact of Air Transport System Dept., Italian Aerospace Research Center (CIRA), Via Maiorise 81043 Capua (CE), Italy
Interests: vibroacoustics; aeroacoustics; aerospace systems; Air Traffic Management (ATM)
Special Issues and Collections in MDPI journals
Dr. Venanzio Giannella
Website
Guest Editor
Research Fellow, Department of Industrial Engineering, University of Salerno, Italy
Interests: fatigue; fracture; FEM; BEM; vibroacoustics; advanced materials
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

The purpose of this Special Issue is to highlight the latest enhancements in the abatement of noise and vibrations of marine, aerospace and automotive systems. The reduction of acoustic emissions and the improvement of cabin interior comfort are on the path of all major industries of the transport system, having a direct impact on customer satisfaction and, consequently, on the commercial success of new products. The main topics covered in this Special Issue deal with computational, instrumentation and data analysis of noise and vibrations of ships, fixed-wing aircrafts, rotating wing aircrafts, space launchers and automotive vehicles. This Special Issue covers, but is not limited to, aerodynamically generated noise, engine noise, sound absorption, cabin acoustic treatments, duct acoustics, active noise control, porous materials and vibroacoustic properties of structures and materials. This Special Issue provides an opportunity for scientists and engineers to publish their studies of current interest, both in the computational and experimental fields of research, and also articles to introduce new approaches and methodologies.

Dr. Roberto Citarella
Dr. Luigi Federico
Dr. Venanzio Giannella
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com 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 papers will be 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. Applied Sciences is an international peer-reviewed open access semimonthly 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 1800 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

  • Vibroacoustics
  • Aeroacoustics
  • Acoustics, noise, vibration, aeronautics, automotive, marine
  • BEM, FEM, SEA
  • Ray Tracing
  • Passive Noise Control
  • Active Noise Control

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Open AccessArticle
Acoustic Improvements of Aircraft Headrests Based on Electrospun Mats Evaluated Through Boundary Element Method
Appl. Sci. 2020, 10(16), 5712; https://doi.org/10.3390/app10165712 - 18 Aug 2020
Abstract
This work illustrates the development of passive noise control (PNC) improvements of aircraft headrests to enhance the acoustic comfort for passengers. Two PNC improvements were studied with the aim of reducing the noise perceived by passengers during flight. Two headrest configurations, with and [...] Read more.
This work illustrates the development of passive noise control (PNC) improvements of aircraft headrests to enhance the acoustic comfort for passengers. Two PNC improvements were studied with the aim of reducing the noise perceived by passengers during flight. Two headrest configurations, with and without the lateral caps, and two different materials, a traditional foam and an innovative Silica/Polyvinylpyrrolidone (PVP) woven non-woven mat, were considered, and compared in terms of sound pressure level (SPL) perceived by passengers. Boundary element method (BEM) models were built up to evaluate the acoustic performances of different headrest configurations, varying in terms of shape and textile. A spherical distribution of monopole sources surrounding the headrests was considered as acoustic load, in such a way as to recreate a diffuse acoustic field simulating the cabin noise perceived by passengers during cruise conditions. The impact of the two PNC improvements was analyzed to envisage some general guidelines useful to design advanced headrests from the acoustic viewpoint. Full article
Show Figures

Figure 1

Open AccessArticle
Numerical Investigation of Unsteady Flow and Aerodynamic Noise Characteristics of an Automotive Axial Cooling Fan
Appl. Sci. 2020, 10(16), 5432; https://doi.org/10.3390/app10165432 - 06 Aug 2020
Abstract
Low-speed axial cooling fans are frequently used to manage engine temperature by ensuring that adequate quantities of air pass through heat exchangers, even at low vehicle speeds or in the idle condition. This study aims to provide a better understanding of the unsteady [...] Read more.
Low-speed axial cooling fans are frequently used to manage engine temperature by ensuring that adequate quantities of air pass through heat exchangers, even at low vehicle speeds or in the idle condition. This study aims to provide a better understanding of the unsteady flow behavior around an automotive axial cooling fan with seven blades and its impact on the aerodynamic noise generation. Large Eddy Simulation (LES) near the near-field region and the Ffowcs-Williams and Hawkinbygs (FW-H) method were performed to analyze the flow characteristics around the fan and predict the aerodynamic noise emitted from the fan under a constant rotational speed of 2100 rpm. The simulation results for the velocity distributions and aerodynamic noise were compared with the experimental data measured by single hot-wire probe and in a dead-sound room. The results showed a comparatively good agreement upstream and downstream from the fan and at two different receivers of 0.5 m and 1.0 m. When the fan was rotating, a strong tonal noise numerically existed near the leading edge of the blades at the tip and amounted to 110 dB sound pressure level (SPL) caused by the increasing angles of attack with the increasing radial velocity near the ring, which caused the entire air foil to emit a low-frequency noise. Furthermore, the different SPL decay characteristics of approximately 5 dB in the near-field region and 6 dB in the far-field region were observed each time the distance from the fan doubles. The findings of this research can provide important insights into the design of axial fans with low noise and high performance. Full article
Show Figures

Figure 1

Back to TopTop