The large interaction tonal noise of counter-rotating propellers significantly restricts their application in civil aviation. A pair of counter-rotating propellers was simulated by the lattice Boltzmann method, and the far-field noise was predicted by the Ffowcs Williams and Hawkings analogy. Dynamic mode decomposition was introduced to analyze the surface pressure contribution to far-field noise and to provide insights on the cancellation mechanism of the noise source distribution for the interaction tone. It was found that the cancellation effect is closely related to the relative position between the front blade wake and rear blade element. By adjusting the rear blade sweep and, hence, changing the relative position, the interaction tone can be reduced effectively.
Numerical Investigations on Phase Cancelation of Interaction Noise for Counter-Rotating Propellers
AIAA Journal ; 62 , 5 ; 1826-1839
01.05.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Aerodynamic Center , Civil Aviation , Overall Sound Pressure Level , Tracking and Positioning Systems , Algorithms and Data Structures , Vortex Dynamics , Frequency Domain Beamforming , China Aerodynamics Research and Development Center , Thermal Lattice Boltzmann Method , Counter Rotating Propellers
Engineering Index Backfile | 1940
|Advanced Propulsion through Counter Rotating Propellers
British Library Conference Proceedings | 1994
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