INVESTIGATION OF A THEORY FOR THE STRUCTURE OF THE VISCOUS SUBLAYER IN WALL TURBULENCE,

Abstract

Based on the assumption of equilibrium of the average rate of change of the total turbulent energy, differential eigenvalue equations for the structure of finite-amplitude disturbances invariant in the streamwise direction are obtained. The minimum viscous sublayer thickness is determined using a simplified form of the equations. The minimum critical thickness non-dimensionalized by shear velocity and kinematic viscosity is found to be 4.69. The numerical results are also compared with the measurements in the sublayer by Bakewell (1966). It is suggested that the so-called 'energy-containing range' of the spectrum may be associated with the large eddy structure. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1967
Accession Number
AD0656089

Entities

People

  • Roy Cassel Elswick Jr

Organizations

  • Pennsylvania State University

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Arrhenius Equation
  • Differential Equations
  • Eigenvalues
  • Equations
  • Mathematics
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Physical Properties
  • Spectra
  • Thickness
  • Turbulence
  • Viscosity

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers