Aeroacoustics of Novel Aircraft Engine-Fuselage Integration Concepts
G. (Gianluca) Romani
Doctoral Candidate
Dr. D. (Daniele) Ragni
Assistant Professor
This research project aims at developing computational models based on the Lattice-Boltzmann Method (LBM) to predict and analyze the primary sources of noise associated with two propulsive systems that are commonly found in eVTOL and novel aircraft configurations, namely open rotor and Boundary-Layer Ingestion (BLI) turbofan systems. The accurate prediction and simulation of open rotor eVTOLs and BLI fan aeroacoustics is challenging due to the unsteady and complex flows, as well as the interaction of the rotating blades with the surrounding in-homogeneous turbulence. The main difficulties are related to the prediction of tonal blade-vortex interaction noise, broadband trailing-edge noise and installation noise effects, whose prediction represent the focus of the present projects. While analytical, semi-empirical and low-fidelity numerical methods can provide quick and computationally inexpensive predictions, their results are often not reliable, due to their inadequacy to account for complex flow phenomena. Contrarily, scale-resolved Large Eddy Simulations can capture most of the phenomena of interest, although at a prohibitive computational cost for industrial applications, making not possible their usage in the early stages of aircraft design. Therefore, the development of fast, accurate and reliable computational models based on the LBM can help to fully identify the noise sources in new aircraft propulsive systems and predict the related noise emissions, thus assessing their acoustic nuisance on communities and drive the development of quieter aircraft from the earlier design stages.
Romani, G., van der Velden, W.C. and Casalino, D., 2018. Deterministic and statistical analysis of trailing-edge noise mechanisms with and without serrations. In 2018 AIAA/CEAS Aeroacoustics Conference (p. 3129). DOI: 10.2514/6.2018-3129
Romani, G., & Casalino, D. (2019). Rotorcraft blade-vortex interaction noise prediction using the Lattice-Boltzmann method. Aerospace Science and Technology, 88, 147-157. DOI: 10.1016/j.ast.2019.03.029
Romani, G., Ye, Q., Avallone, F., Ragni, D., & Casalino, D. (2019). Fan Noise Boundary-Layer Ingestion Installation Effects for NOVA Aircraft Configuration. In 25th AIAA/CEAS Aeroacoustics Conference (p. 2429). DOI: 10.2514/6.2019-2429
Romani, G., Ye, Q., Avallone, F., Ragni, D., & Casalino, D. (2020). Numerical analysis of fan noise for the NOVA boundary-layer ingestion configuration. Aerospace Science and Technology, 96, 105532. DOI: 10.1016/j.ast.2019.105532
Gianluca Romani holds a BSc in Mechanical Engineering (2013) and a MSc in Aeronautical Engineering (2016) both from Roma Tre University (Italy). He is currently working as Aerospace Application Engineer at Dassault Systèmes (Germany) and pursuing a PhD at Aerospace Faculty of Delft University of Technology (the Netherlands). His research focuses on the numerical analysis of rotorcraft blade-vortex interaction noise, aerofoil turbulent boundary-layer trailing-edge noise, low-Reynolds propeller noise and fan boundary-layer ingestion noise by means of the lattice-Boltzmann methodology.
Daniele Ragni graduated in Thermo-Mechanical Engineering at the Polytechnic University of Marche (2007). Obtained the Ph.D. in 2012 (Faculty of Aerospace Engineering TU Delft) and joined TU Delft at the section of Wind Energy in the AWEP Department in the same year.
