High Angle of Attack Helicopter Blade-Vortex Interaction; Numerical Studies Using LES

Patricia Coronado, Carlos Velez, Marcel Ilie, Ge-Cheng Zha

Research output: Contribution to book or proceedingChapter

Abstract

The influence of angle of attack on the helicopter blade-vortex mechanism of interaction is investigated using large eddy simulation (LES). The LES technique provides a promising tool for obtaining the unsteady wall-pressure fields, aerodynamic coefficients and the acoustic source functions. A large eddy simulation is carried out for a two-dimensional Blade-Vortex Interaction (BVI) problem, for a chord based Reynolds number of 1.3x10^6. Computations are carried out to investigate the influence of angle of attack (α = 0^θ, α = 5^θ, α = 10^θ) on the aerodynamic coefficients and acoustic field.
Original languageAmerican English
Title of host publicationProceedings of the Aerospace Sciences Meeting
DOIs
StatePublished - Jan 4 2011

Disciplines

  • Mechanical Engineering

Keywords

  • Blade-vortex
  • Helicopter
  • High angle of attack
  • LES
  • Numerical studies

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