Permeable Coatings for Turbulent Drag Reduction

Abstract

The reduction of energy consumption and of pollutant emissions are deep and growing concerns for air transport application. This has motivated the investigation of several technologies to reduce turbulent skin friction on vehicle surfaces. This project investigates a recently proposed method for turbulent drag reduction: coatings with anisotropic permeability (i.e. anisotropic permeable substrates). In the first phase of this project, we conduct microscale calculations of the microscopic flow for specific microscale configurations. In the second phase, the interaction between the permeable substrate and the overlying turbulence is studied using fully resolved direct numerical simulation.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2021
Accession Number
AD1145285

Entities

People

  • Ricardo Garcia-Mayoral

Organizations

  • University of Cambridge

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Channel Flow
  • Computational Fluid Dynamics
  • Computational Science
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Hydrodynamics
  • Mechanical Properties
  • Mechanics
  • Pressure Gradients
  • Reynolds Number
  • Secondary Flow
  • Stratified Fluids
  • Topology
  • Turbulent Flow
  • Turbulent Mixing
  • Two Dimensional
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • Surface Engineering/Surface Coating Technology.