Dynamically Altered Compliant Surface and Measuring Equipment for use in the Control of Separation by Oscillatory Means

Abstract

We have selected a vendor (DANTEC) and purchased a three dimensional LDA. The selection process took over 6 months to complete with three companies competing (DANTEC, AEROMETRICS & TSI). The instrument has been installed and was immediately used on two DoD sponsored projects: (1) On a boundary layer that is continuously maintained on the verge of separation (the Stratford ramp), a project that is sponsored by ONR. (2) On studying the separation of a wall jet that flows over a circular cylinder. In both experiments regions of local, time dependent reverse flow were detected and the typical hot wire was incapable to provide accurate results. I am enclosing a copy of an article that was very recently accepted for publication by the Journal of Fluid Mechanics after we have checked the reliability of the data with the new equipment that was purchased on this grant (see specifically figures 3-5).

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 03, 1998
Accession Number
ADA366743

Entities

People

  • Israel Wygnanski

Organizations

  • University of Arizona

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Curvature
  • Engineering
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Friction
  • Hot Wire
  • Layers
  • Measurement
  • Mechanical Engineering
  • Mechanics
  • Pressure Gradients
  • Reynolds Number
  • Skin Friction
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Fluid Dynamics.
  • Technical Research and Report Writing.