| Autor: |
Yokoyama, H., Hamasuna, R., Miki, A., Onitsuka, H., Iida, A. |
| Předmět: |
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| Zdroj: |
ECCOMAS Congress 2016 Proceedings; 2016, Issue 1, p1315-1324, 10p |
| Abstrakt: |
In musical instruments, the mode change of radiating sound is related with their quality. To clarify the flow and acoustic fields related with this mode change, we performed direct aeroacoustic simulations of flow and acoustic fields around two actual recorders with different shapes of windway. The computations are based on the compressible Navier-Stokes equations to predict the fluid-acoustic interactions. It is shown that the relationship between the mean velocity at the windway exit and the mode of the radiating sound for the two models is in good agreement with the measured results. The velocity of the mode change depends on the shape and configurations of the windway and edge. Based on the predicted flow fields, the asymmetry of the jet oscillations between in the upward and downward directions is observed in the recorder model for the earlier mode change. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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