Koopman Mode Decomposition Methods in Dynamic Stall: Reduced Order Modeling and Control

Abstract

During dynamic stall, large peaks in lift, pitching moment and drag appear, and these cause an undesirable increase in the mean drag. Dynamic stall can also lead to potentially fatal structural loads due to strong vibrations of flexible aerodynamic surfaces. Despite extensive analytical, numerical, and experimental efforts to study dynamic stall, progress is needed for the full understanding and prediction of the relevant complex fluid dynamic mechanisms.

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Document Details

Document Type
Technical Report
Publication Date
Nov 12, 2015
Accession Number
AD1008635

Entities

People

  • Igor Mezić
  • Maria Fonoberova
  • Sophie Loire

Tags

Communities of Interest

  • Air Platforms
  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Computational Fluid Dynamics
  • Eigenvalues
  • Eigenvectors
  • Engineering
  • Equations
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Frequency
  • Helicopter Rotors
  • Helicopters
  • Military Research
  • Physics Laboratories
  • Reynolds Number
  • Turbulent Mixing
  • Vortex Shedding

Readers

  • Aerodynamics/Aeronautics.
  • Systems Analysis and Design
  • Wave Propagation and Nonlinear Chaotic Dynamics.