In this report, the effect of flexibility on an oscillating two-dimensional airfoil is analyzed, starting from the theoretical foundations of thin-airfoil theory in unsteady conditions in order to better understand the phenomena involved in the experimental studies discussed. After a brief overview of the state of the art, the main theoretical models applicable to unsteady flow (including Theodorsen’s formulation and unsteady thin-airfoil theory) are introduced, followed by a discussion of the results obtained and their physical implications. The aim of the work is to understand how the deformability of the airfoil influences the properties of the surrounding fluid and, consequently, the aerodynamic coefficients and overall performance.
In questa relazione viene analizzato l’effetto della flessibilità su un profilo bidimensionale oscillante, partendo dalle basi teoriche dei profili sottili in regime non stazionario per poter comprendere meglio i fenomeni che entrano in gioco negli studi sperimentali discussi. Dopo una breve presentazione dello stato dell’arte, vengono introdotti i principali modelli teorici applicabili al regime non stazionario (tra cui la formulazione di Theodorsen e la teoria del profilo sottile non stazionario), per poi discutere i risultati ottenuti e le loro implicazioni fisiche. L’obiettivo del lavoro è comprendere in che modo la deformabilità del profilo influenzi le proprietà del fluido circostante e, di conseguenza, i coefficienti aerodinamici e le performance complessive.
Analisi degli effetti della flessibilità su un profilo alare bidimensionale
GRECO, FRANCESCO
2024/2025
Abstract
In this report, the effect of flexibility on an oscillating two-dimensional airfoil is analyzed, starting from the theoretical foundations of thin-airfoil theory in unsteady conditions in order to better understand the phenomena involved in the experimental studies discussed. After a brief overview of the state of the art, the main theoretical models applicable to unsteady flow (including Theodorsen’s formulation and unsteady thin-airfoil theory) are introduced, followed by a discussion of the results obtained and their physical implications. The aim of the work is to understand how the deformability of the airfoil influences the properties of the surrounding fluid and, consequently, the aerodynamic coefficients and overall performance.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/98110