Characterization of the Time-Dependent Fluid-Structure Interaction of Passive Flow Control of Low Reynolds Number Membrane Wings

Abstract

A common phenomenon of low-Re membrane wings is the flow-induced, large-amplitude vibration of the membrane. This vibration is substantially larger for free trailing-edge geometries compared to perimeter constrained geometries, enabling greater interaction with the flow. To study the fluid-structure interaction, the investigators developed and used synchronized, point-wise and planar, time-resolved experimental techniques to measure the flow features and surface deflections. The research program focused on low-AR (2 5) membrane wings with unattached trailing edges and various applied pre-strain levels (<10%). Detailed results and discussions are presented regarding the onset of the vibration, aerodynamic effects, full-field fluid-structure interaction and proposed scalings.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2013
Accession Number
ADA590006

Entities

People

  • Amy W. Lang
  • James P. Hubner
  • Lawrence S Ukeiley
  • Peter G. Ifju

Organizations

  • University of Alabama

Tags

Communities of Interest

  • Air Platforms
  • Autonomy
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aircrafts
  • Composite Materials
  • Computational Fluid Dynamics
  • Flow Visualization
  • Fluid Dynamics
  • Geometry
  • Hydrodynamics
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Resonant Frequency
  • Reynolds Number
  • Standing Waves
  • Three Dimensional
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Aerodynamics/Aeronautics.
  • Computational Fluid Dynamics (CFD)