DNS for New Applications of Surface Textures and MEMS Actuators for Turbulent Boundary Layer Control

Abstract

As a two year project related to our earlier AFOSR work, we examined the use of surface textures to suppress the growth of turbulent spots during the later stages of boundary layer transition. The textures are small and closely spaced and hence require detailed direct numerical simulation of the near surface flow to capture the physics. The work emphasized the fundamental nature of that flow/texture interaction. This project primarily involved the application of our pre-existing computational techniques and software but did require the alteration of the code to handle a boundary layer and to run with high spatial resolution on a parallel processor. The possible applications to boundary layer control are suggested in Background while the section called Proposal Objectives reviews the approaches considered.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 30, 2006
Accession Number
ADA472644

Entities

People

  • David B. Goldstein

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Boundary Layer Transition
  • Computational Fluid Dynamics
  • Engineering
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Laminar Flow
  • Layers
  • Mechanics
  • Shear Stresses
  • Simulations
  • Three Dimensional
  • Transitions
  • Turbulent Boundary Layer
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Hall-Effect Thruster