A Velocity Profile Approximation for the Inner Region of the Turbulent Boundary Layer in an Adverse Pressure Grad

Abstract

A new near-wall approximate analytical velocity profile is developed for wall-bounded turbulent boundary layers in an adverse pressure gradient. The new velocity profile approximation is used to fit experimental profile data in order to extract near-wall information such as the skin friction coefficient and the viscous layer thickness. Results with Direct Numerical Simulation computer generated data shows the method works well and is superior to the existing model from the literature. Fits to experimental wind tunnel APG data sets indicate that the new analytical velocity profile works well.

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Document Details

Document Type
Technical Report
Publication Date
Sep 10, 2009
Accession Number
ADA527959

Entities

People

  • David W. Weyburne

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Boundaries
  • Boundary Layer
  • Coefficients
  • Data Sets
  • Delta Functions
  • Experimental Data
  • Fluid Flow
  • Friction
  • Laminar Flow
  • Layers
  • Pressure Gradients
  • Simulations
  • Skin Friction
  • Turbulent Boundary Layer
  • Turbulent Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Fluid Mechanics and Fluid Dynamics.