Abstract
Due to an increasing interest in applying fluid dynamics solvers to predict the aerodynamic sound generation of propellers and open rotors, a comprehensive study on the influence of numerical model parameters on the predicted acoustics and its theoretical foundations are presented. Therefore aeroacoustic nearfield studies of a propfan under take-off conditions are performed using timedomain flow data from computational fluid dynamics analyses. Pressure signals at discrete locations are recorded to derive sound pressure levels, directivities and tonal noise frequency spectra. The predicted acoustics are compared to data obtained from a generalised propeller noise estimation procedure and evaluated with respect to the influence of spatial and temporal discretisation. Therefore three spatial discretisation schemes are investigated on two meshes with differing resolutions to draw conclusions about damping and propagation effects.
| Original language | English |
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| State | Published - 2012 |
| Event | 14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2012 - Honolulu, HI, United States Duration: 27 Feb 2012 → 2 Mar 2012 |
Conference
| Conference | 14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2012 |
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| Country/Territory | United States |
| City | Honolulu, HI |
| Period | 27/02/12 → 2/03/12 |