Influence of ice accretion on the noise generated by an airfoil section
| Autor: | Robert-Zoltán Szász, Johan Revstedt, Matilda Ronnfors |
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| Rok vydání: | 2016 |
| Předmět: |
Airfoil
Astrophysics::High Energy Astrophysical Phenomena Acoustics Flow (psychology) 02 engineering and technology Computational fluid dynamics 01 natural sciences Physics::Geophysics 010305 fluids & plasmas Physics::Fluid Dynamics 0203 mechanical engineering 0103 physical sciences Range (statistics) Physics::Atmospheric and Oceanic Physics Fluid Flow and Transfer Processes Physics business.industry Mechanical Engineering Ice accretion Mechanics Condensed Matter Physics Wave equation 020303 mechanical engineering & transports Section (archaeology) Astrophysics::Earth and Planetary Astrophysics business Noise (radio) |
| Zdroj: | International Journal of Heat and Fluid Flow. 62:83-92 |
| ISSN: | 0142-727X |
| DOI: | 10.1016/j.ijheatfluidflow.2016.06.006 |
| Popis: | We investigate the noise generated by an airfoil section. Three cases are considered, one with a clean airfoil and two cases with airfoils with ice accretion. The amount of ice is the same in the two cases with ice accretion, but the surface of the accreted ice layer is smoother in one of them. The noise is computed using a hybrid approach. First the flow and the acoustic sources are computed. Second, the noise propagation is predicted by solving an inhomogeneous wave equation. The results indicate that in this case the accreted ice layer leads to a decrease of the radiated noise levels, especially in the lower frequency range. |
| Databáze: | OpenAIRE |
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