What is it about?
The shift toward a sustainable and eco-friendly future of aviation is further catalysed by the aggressive targets set by administrative and industrial stakeholders. It has emerged as one of the solutions with the potential to increase overall efficiency and improve noise emissions. This paper characterises the flow and acoustic field associated with a DEP propeller.
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Why is it important?
We employ a hybrid methodology using scale-resolving turbulence formulation and an acoustic analogy is used to predict aerodynamic noise generation and acoustic wave propagation to the far-field for an isolated DEP propeller. The numerical predictions are observed to be in reasonable agreement with the measured values for both aerodynamic and aero-acoustic attributes. Two findings are (1) the sensitivity of far-field acoustic spectra to the integration surface is presented and (2) dominant noise sources in the system including propeller and wake flows are identified.
Perspectives
I am happy to see that the present numerical method can capture the aeroacoustic features of the DEP propeller well. Because it is important for carrying out further studies.
Guangyuan (Dennis) Huang
University of Nottingham
Read the Original
This page is a summary of: Numerical characterisation of noise generated by a distributed-propulsion propeller, June 2022, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2022-2878.
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