The properties of constant density turbulent jet and turbulence models
Abstract
The properties of a turbulent jet issued into still fluid of the same density, are derived analytically through the assumptions that: (1) mean velocity profile can be represented by Gaussian error curve, and (2) jet half width is independent of exit conditions. Both plane and round jets are treated, and formulas on center line velocity, entrainment, and others are derived. Center line velocity is much influenced by the exit conditions, especially by jet exit geometry. An exit momentum factor is introduced to correlate center line velocity, and approximate values are given for practical flows. Typical turbulence models are examined from the point of view of jet turbulence structure.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 June 1982
 Bibcode:
 1982STIN...8317830I
 Keywords:

 Constants;
 Density (Number/Volume);
 Flow Velocity;
 Jet Flow;
 Turbulence Models;
 Turbulent Jets;
 Velocity Distribution;
 Flow Geometry;
 Gauss Equation;
 Mathematical Models;
 Momentum;
 Fluid Mechanics and Heat Transfer