The department of Aerodynamics and Propulsion (DAEP) at ISAE-Supaéro is currently investigating the aeroacoustic of MAV (Micro Air Vehicles), mostly focusing on their rotors and potential interactions to reduce noise emissions. The long-term objective is to propose innovative rotor shapes and kinematics to reduce their noise while maximizing the aerodynamic efficiency. This is crucial in the current context where the use of MAV in an urban environment has increased rapidly over the last decade. Currently, an experimental campaign is carried out in the anechoic chamber at ISAE-Supaéro, where several rotor shapes are tested. In particular, the noise emitted by the rotor is recorded by a near-field microphone, and the aerodynamic forces are also measured. The present thesis work focus on the validation of a high-fidelity method, called Lattice-Boltzmann Method (LBM), against this experiment. The code is OmnisLB, an industrial LBM code from Numéca, which is co-developed by University of Geneva and ISAE-Supaéro.
Il dipartimento di aerodinamica e propulsione (DAEP) dell'ISAE-Supaéro sta attualmente studiando l'aeroacustica dei MAV (Micro Air Vehicles), concentrandosi principalmente sui loro rotori e sulle potenziali interazioni per ridurre le emissioni di rumore. L'obiettivo a lungo termine è quello di proporre forme e cinematiche innovative del rotore per ridurne il rumore massimizzando l'efficienza aerodinamica. Attualmente viene condotta una campagna sperimentale nella camera anecoica dell'ISAE-Supaéro, dove vengono testate diverse forme di rotore. In particolare, viene registrato il rumore emesso dal rotore e vengono misurate le forze aerodinamiche. Il presente lavoro di tesi si concentra sulla convalida di un risolutore basato su modelli Lattice-Boltzmann (LBM), contro i dati sperimentali raccolti. Il codice in question è OmnisLB, un codice industriale di Numéca, sviluppato congiuntamente dall'Università di Ginevra e dall'ISAE-Supaéro.
Validation of an LBM solver for the aerodynamic and aeroacoustic study of a propeller
Di LORENZO, DANIELE
2020/2021
Abstract
The department of Aerodynamics and Propulsion (DAEP) at ISAE-Supaéro is currently investigating the aeroacoustic of MAV (Micro Air Vehicles), mostly focusing on their rotors and potential interactions to reduce noise emissions. The long-term objective is to propose innovative rotor shapes and kinematics to reduce their noise while maximizing the aerodynamic efficiency. This is crucial in the current context where the use of MAV in an urban environment has increased rapidly over the last decade. Currently, an experimental campaign is carried out in the anechoic chamber at ISAE-Supaéro, where several rotor shapes are tested. In particular, the noise emitted by the rotor is recorded by a near-field microphone, and the aerodynamic forces are also measured. The present thesis work focus on the validation of a high-fidelity method, called Lattice-Boltzmann Method (LBM), against this experiment. The code is OmnisLB, an industrial LBM code from Numéca, which is co-developed by University of Geneva and ISAE-Supaéro.| File | Dimensione | Formato | |
|---|---|---|---|
|
Tesi_Di_Lorenzo.pdf
accessibile in internet solo dagli utenti autorizzati
Dimensione
13.28 MB
Formato
Adobe PDF
|
13.28 MB | Adobe PDF | Visualizza/Apri |
I documenti in POLITesi sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/10589/171255