An oscillatory approach to turbulence
Abstract
Nature offers many examples of restrained fluid layers that an outer flow of velocity U forces to oscillate with a basic frequency approximately equal to 2 pid, where d is the layer thickness. When the oscillations are convected by the current, waves of length 2 pid are formed. Harmonics of the basic frequency and the corresponding fractionallength waves often arise. Taking into account the presence of those waves, an undulatory model for the turbulent flow is propounded. As an example of its application, a turbulentenergy spectrum is obtained through elementary wavemechanics considerations.
 Publication:

Unsteady Turbulent Shear Flows
 Pub Date:
 1981
 Bibcode:
 1981utsf.proc..348L
 Keywords:

 Computational Fluid Dynamics;
 Oscillating Flow;
 Turbulent Boundary Layer;
 Wave Propagation;
 Boundary Layer Transition;
 Energy Spectra;
 Flow Velocity;
 Strouhal Number;
 Wall Flow;
 Fluid Mechanics and Heat Transfer