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
2024-02-28
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Counter Rotating Propellers , Algorithms and Data Structures , Thermal Lattice Boltzmann Method , Civil Aviation , Vortex Dynamics , Overall Sound Pressure Level , Frequency Domain Beamforming , Aerodynamic Center , Tracking and Positioning Systems , China Aerodynamics Research and Development Center
Advanced Propulsion through Counter Rotating Propellers
British Library Conference Proceedings | 1994
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