Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
3.7
2.9
Journals
JMSE
Special Issues
Simulation of the Acoustic Behaviour of Ship-Propeller Configurations with and...
share announcement

Simulation of the Acoustic Behaviour of Ship-Propeller Configurations with and without Cavitation

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (10 October 2021) | Viewed by 10076

Special Issue Editor

Prof. Dr. Eng Moustafa Abdel-Maksoud

E-Mail Website
Guest Editor
Hamburg University of Technology (TUHH), Institute for Fluid Dynamics and Ship Theory (M8), Am Schwarzenberg-Campus 4, 21073 Hamburg, Germany
Interests: hydrodynamics: naval architecture; fluid mechanics; hydrodynamic modeling numerical modelling; CFD simulation; fluid structure interaction; computational fluid mechanics; underwater acoustics, experimental fluid mechanics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

At least since the late 1990s, acoustic pollution of the marine environment has been the subject of discussion between the maritime industry, environmentalists, and politicians. The significant anthropogenic noise impact is caused by sea transport. Large tankers or bulkers cause noise levels of up to 205 decibels due to engine noise, propellers, cavitation, and hull vibration. The oceans of the northern hemisphere are now characterized by diffuse noise caused by ships in the frequency range between 100 and 300 Hz, with the sound spectrum of ships being in the frequency range from 10 Hz to 4 kHz. Since a considerable amount of experimental and numerical research is currently being conducted and substantial progress has been made in analyzing noise generation and propagation, the aim of this Special Issue is to provide a comprehensive summary of the state of development in this field. You are invited to present your latest developments and results on one of the topics listed below. We encourage you to send us articles on other relevant topics.

Prof. Dr. Eng. Moustafa Abdel-Maksoud
Guest Editor

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 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. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly 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 2600 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

  • Computational modelling techniques for cavitation noise based on high-fidelity CFD simulations
  • Numercal methods to compute the noise sources of cavitating and non-cavitating propellers
  • Development of numerical methods for simulation far-field sound propagation
  • Calculation methods of noise impact induced by marine propeller under consideration of fluid–structure–interaction
  • Experimental techniques for characterising acoustic of propellers in near and far field
  • Full-scale measurements for noise radiation induced by ships in deep and shallow water
  • Validation studies and development of scaling procedures for cavitation noise

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

23 pages, 12575 KiB  
Article
Application of Large Eddy Simulation to Predict Underwater Noise of Marine Propulsors. Part 1: Cavitation Dynamics
by Julian Kimmerl, Paul Mertes and Moustafa Abdel-Maksoud
J. Mar. Sci. Eng. 2021, 9(8), 792; https://doi.org/10.3390/jmse9080792 - 22 Jul 2021
Cited by 7 | Viewed by 2306
Abstract
Marine propulsors are identified as the main contributor to a vessel’s underwater radiated noise as a result of tonal propeller noise and broadband emissions caused by its induced cavitation. To reduce a vessel’s signature, spectral limits are set for the propulsion industry, which [...] Read more.
Marine propulsors are identified as the main contributor to a vessel’s underwater radiated noise as a result of tonal propeller noise and broadband emissions caused by its induced cavitation. To reduce a vessel’s signature, spectral limits are set for the propulsion industry, which can be experimentally obtained for a complete vessel at the full-scale; however, the prediction capability of the sound sources is still rudimentary at best. To adhere to the regulatory demands, more accurate numerical methods for combined turbulence and two-phase modeling for a high-quality prediction of acoustic sources of a propeller are required. Several studies have suggested implicit LES as a capable tool for propeller cavitation simulation. In the presented study, the main objective was the evaluation of the tip and hub vortex cavitating flows with implicit LES focusing on probable sound source representation. Cavitation structures for free-running propeller test cases were compared with experimental measurements. To resolve the structure of the tip vortex accurately, a priory mesh refinement was employed during the simulation in regions of high vorticity. Good visual agreement with the experiments and a fundamental investigation of the tip cavity structure confirmed the capability of the implicit LES for resolving detailed turbulent flow and cavitation structures for free-running propellers. Full article
(This article belongs to the Special Issue Simulation of the Acoustic Behaviour of Ship-Propeller Configurations with and without Cavitation)
►▼ Show Figures

Figure 1

25 pages, 12607 KiB  
Article
Application of Large Eddy Simulation to Predict Underwater Noise of Marine Propulsors. Part 2: Noise Generation
by Julian Kimmerl, Paul Mertes and Moustafa Abdel-Maksoud
J. Mar. Sci. Eng. 2021, 9(7), 778; https://doi.org/10.3390/jmse9070778 - 18 Jul 2021
Cited by 14 | Viewed by 3271
Abstract
Methods to predict underwater acoustics are gaining increased significance, as the propulsion industry is required to confirm noise spectrum limits, for instance in compliance with classification society rules. Propeller–ship interaction is a main contributing factor to the underwater noise emissions by a vessel, [...] Read more.
Methods to predict underwater acoustics are gaining increased significance, as the propulsion industry is required to confirm noise spectrum limits, for instance in compliance with classification society rules. Propeller–ship interaction is a main contributing factor to the underwater noise emissions by a vessel, demanding improved methods for both hydrodynamic and high-quality noise prediction. Implicit large eddy simulation applying volume-of-fluid phase modeling with the Schnerr-Sauer cavitation model is confirmed to be a capable tool for propeller cavitation simulation in part 1. In this part, the near field sound pressure of the hydrodynamic solution of the finite volume method is examined. The sound level spectra for free-running propeller test cases and pressure pulses on the hull for propellers under behind ship conditions are compared with the experimental measurements. For a propeller-free running case with priory mesh refinement in regions of high vorticity to improve the tip vortex cavity representation, good agreement is reached with respect to the spectral signature. For behind ship cases without additional refinements, partial agreement was achieved for the incompressible hull pressure fluctuations. Thus, meshing strategies require improvements for this approach to be widely applicable in an industrial environment, especially for non-uniform propeller inflow. Full article
(This article belongs to the Special Issue Simulation of the Acoustic Behaviour of Ship-Propeller Configurations with and without Cavitation)
►▼ Show Figures

Figure 1

22 pages, 1640 KiB  
Article
Sound Field Properties of Non-Cavitating Marine Propellers
by Youjiang Wang, Ulf Göttsche and Moustafa Abdel-Maksoud
J. Mar. Sci. Eng. 2020, 8(11), 885; https://doi.org/10.3390/jmse8110885 - 06 Nov 2020
Cited by 10 | Viewed by 2382
Abstract
The sound field properties of non-cavitating marine propellers are investigated using a hybrid method, in which the FWH (Ffowcs William-Hawkings) analogy is coupled with the BEM (Boundary Element Method) approach. The investigations include both the uniform and non-uniform inflow conditions. For both conditions, [...] Read more.
The sound field properties of non-cavitating marine propellers are investigated using a hybrid method, in which the FWH (Ffowcs William-Hawkings) analogy is coupled with the BEM (Boundary Element Method) approach. The investigations include both the uniform and non-uniform inflow conditions. For both conditions, the dominant sound source terms and the decay rate of the noise with regard to the distance to propeller centre are investigated. The influence of the permeable surface dimensions in the permeable FWH approach on the hydroacoustic result is also investigated. To carry out the investigations, the formulation to calculate acoustic pressure generated by the propeller wake sheet is proposed for the first time. The issues associated to coupling permeable FWH approach and BEM are also discussed, including the fictitious volume flux problem and the consideration of the ship wake field. It was found that the influence of the permeable surface dimension is little for the 1st BPF (Blade Passage Frequency), but cannot be ignored for the 3rd BPF. In the uniform inflow situation the thickness terms are found to be dominant, while in the non-uniform inflow situation the loading terms are dominant. Full article
(This article belongs to the Special Issue Simulation of the Acoustic Behaviour of Ship-Propeller Configurations with and without Cavitation)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop