Calculation of the sound power in the inlet of the aero-engine based on the analytical prediction

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00305846" target="_blank" >RIV/68407700:21220/16:00305846 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Calculation of the sound power in the inlet of the aero-engine based on the analytical prediction
Original language description
Tone noise radiated through the inlet of a turbofan is mainly due to rotor and stator interactions at subsonic regimes and due to the generated shock waves at transonic fan tip speeds. The paper is focused on the calculation of the 3D ducted acoustic field using FEM. Rotor in transonic conditions is analyzed. Analytical prediction of the harmonic sound power is proposed. Method is an alternative to a direct numerical computation and leads to a very fast calculation. Estimation of the initial pressure jump of the shock waves in the rotor plane is based on normal shock wave equation and is used as the acoustic loading in the FEM model. All blades are assumed to be identical and only the blade passing frequency and its harmonics are generated. Predicted noise is compared with the experimental data.
Czech name
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Czech description
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Project
<a href="/en/project/TE02000032" target="_blank" >TE02000032: Advanced Aerostructures Research Centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
32nd conference with international participation Computational Mechanics 2016 - Book of Extended Abstracts
ISBN
978-80-261-0647-0
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
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Publisher name
University of West Bohemia
Place of publication
Pilsen
Event location
Špičák
Event date
Oct 31, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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