Colloquium: Shubham (AWEP)

31 januari 2020 10:30 - Locatie: Lecture Hall C, Faculty of Aerospace Engineering, Kluyverweg 1, Delft.

Computational Aeroacoustic Investigation of Co-rotating rotors for Urban Air Mobility

Noise is a major issue in Urban Air Mobility vehicles, especially due to its operation in the urban environment. One of the major sources of noise is the rotor, and thus, there is a need to optimize the rotor design for aerodynamics and aeroacoustics. Co-rotating rotor is one such configuration which can offer significant potential in noise reduction without affecting thrust and power distribution in a vehicle.

The purpose of the present study was to investigate the behavior of a co-rotating rotor when its geometrical parameters are varied, such as: axial and azimuthal separation, collective pitch, etc. The simulation was performed on PowerFLOW which uses Lattice-Boltzmann Method for flow-field simulation and Ffowcs-Williams and Hawkings analogy for far-field aeroacoustic post-processing. The co-rotating rotor was also compared to a baseline co-planar rotor for two objectives: noise reduction and increasing the co-rotating thrust to twice the thrust of co-planar rotor.