摘要: The present paper deals with an innovative multi-fidelity framework for characterizing the aerodynamics and the aeroacoustics of multirotor systems with application to advanced eVTOL aircraft. In this framework, the goal of the ac... 展开 The present paper deals with an innovative multi-fidelity framework for characterizing the aerodynamics and the aeroacoustics of multirotor systems with application to advanced eVTOL aircraft. In this framework, the goal of the activity is a multi-fidelity investigation of two propellers in tandem with rotor disks overlap, reproducing a typical feature of eVTOL architectures in airplane mode flight conditions. A Ffowcs Williams-Hawkings equation solver is used to compute the aeroacoustic footprint of the test case in different configurations. The solver is run with both mid-fidelity aerodynamic simulation data obtained with DUST and high-fidelity simulation data obtained with SU2. The comparison between the two different approaches highlights the suitability of the DUST mid-fidelity simulations for the aeroacoustic investigation of a propeller in airplane mode configuration with a much lower computational cost with respect to high-fidelity CFD simulations. On the other hand, the co-axial propellers tandem configuration shows some differences in the sound pressure level computed with the two approaches, mainly due to the contribution to noise emission given by the rear propeller. 收起