This paper presents a unified boundary integral formulation for the aerodynamic and aeroacoustic analysis of rotorcraft operating under severe Blade-Vortex Interaction (BVI) conditions. Traditional numerical approaches typically rely on a decoupled, two-step process to evaluate aerodynamics and acoustics, and often neglect compressibility effects when treating wake-induced singularities. The proposed methodology overcomes these limitations by coupling a zero-order Boundary Element Method (BEM) for compressible potential flows with a vorticity-based wake regularization technique. This unified framework enables the direct evaluation of radiated noise through Bernoulli’s theorem, circumventing the explicit computation of blade surface pressure.
Levati, E., Bernardini, G., Gennaretti, M. (2026). A Unified Boundary Integral Formulation for Aerodynamic and Aeroacoustic Analysis of Rotorcraft in BVI Conditions. In Proceedings of 52nd European Rotorcraft Forum.
A Unified Boundary Integral Formulation for Aerodynamic and Aeroacoustic Analysis of Rotorcraft in BVI Conditions
Levati E.;Bernardini G.;Gennaretti M.
2026-01-01
Abstract
This paper presents a unified boundary integral formulation for the aerodynamic and aeroacoustic analysis of rotorcraft operating under severe Blade-Vortex Interaction (BVI) conditions. Traditional numerical approaches typically rely on a decoupled, two-step process to evaluate aerodynamics and acoustics, and often neglect compressibility effects when treating wake-induced singularities. The proposed methodology overcomes these limitations by coupling a zero-order Boundary Element Method (BEM) for compressible potential flows with a vorticity-based wake regularization technique. This unified framework enables the direct evaluation of radiated noise through Bernoulli’s theorem, circumventing the explicit computation of blade surface pressure.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
