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Hydrodynamics and Hydroacoustics Investigation of a Blade Profile in a Hubless Propeller System Based on a Hybrid Approach

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The scope of the paper is the investigation of the hydrodynamic and hydroacoustic characteristic of a blade profile within a hubless propeller system. A hybrid procedure was applied in which the flow simulation results in terms of velocity and pressure fields were used as source terms for the hydroacoustics calculations. The Computational Fluid Dynamic (CFD) simulation of the complex 3D system was done using a scale resolving Detached Eddy Simulation (DES). The calculation of the acoustics was carried out using the Expansion about Incompressible Flow (EIF) approach. For the spatial discretization of the EIF equations the Finite Volume Moving Least Squares (FV-MLS) method was used. This method has promising features especially in the application of unstructured meshes. A first verification of the acoustic model is presented. For the validation of the used numerical methods extensive experimental hydrodynamics and hydroacoustics investigations of the hubless propeller system were carried out.
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Document Type: Research Article

Publication date: July 1, 2019

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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