A Microfabricated Surface for Turbulence Control

Abstract

Emerging technology of microfabrication is being applied to develop a surface for turbulence quieting and drag reduction of hydrodynamic and aerodynamic vehicles. Because Reynolds number is known to strongly affect the structure and statistics of a turbulent boundary layer, development is aimed at high Reynolds number applications right from the beginning. Very short length and time scales, like a few hundreds of microns and milliseconds, respectively, are associated with high Reynolds number flows. This requirement can only be met by microfabrication technology. Thus, the microfabrication aspect of the development of the surface is a crucial part of this research. This document presents the preliminary tests that were carried out in a quiet-water tunnel, and the deflection characteristics of the elastic components that were measured. The engineering performance was encouraging, and no adverse hydrodynamic effects were observed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 16, 1993
Accession Number
ADA637044

Entities

People

  • P. R. Bandyopadhyay

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Drag
  • Drag Reduction
  • Elastic Properties
  • Engineering
  • Fabrication
  • Fluid Dynamics
  • Fluid Mechanics
  • Layers
  • Mechanics
  • Microfabrication
  • Reynolds Number
  • Turbulence
  • Turbulent Boundary Layer
  • Undersea Warfare
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Integrated Circuit Design and Technology.
  • Systems Analysis and Design