A Computational Investigation of MEMS

Abstract

We applied a recently developed direct numerical simulation approach to examine MEMS for turbulent boundary layer control. We have carried out simulations of synthetic jets and textured surfaces in this first phase of the study and, in the present one-year follow-on work, are modeling concepts involving hybrid active/passive elements. We have completed a flow and geometric parameter study of synthetic jets and have produced valuable insight into the detailed physics of the actuators. In this final report we present results from simulations of periodic arrays of 2-D and 3-D pulsed synthetic jets into an initially quiescent flow, simulations of slot jets actuating beneath a turbulent boundary layer, studies on the behavior of hairpin vortices and, separately, preliminary simulations of turbulent flow over arrays of chevrons.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 28, 2001
Accession Number
ADA389175

Entities

People

  • David B. Goldstein

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Actuators
  • Boundaries
  • Boundary Layer
  • Boundary Layer Control
  • Channel Flow
  • Computational Fluid Dynamics
  • Drag Reduction
  • Flow
  • Fluid Flow
  • Geometry
  • Layers
  • Simulations
  • Steady State
  • Three Dimensional
  • Turbulent Boundary Layer
  • Turbulent Flow
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Fluid Mechanics and Fluid Dynamics.
  • Robotics and Automation.