Calculations of a plane turbulent jet
Abstract
A joint probability density function (pdf) and a conserved scalar were employed to calculate the properties of a selfsimilar, plane, turbulent jet. The joint pdf covers the three velocity components and nozzle fluid concentration of the constant density medium. The effects of dissipation and fluctuating pressure gradient are treated with conditional modeling linked to the presence of a turbulent or irrotational state of the fluid. The unconditional turbulent kinetic energy is demonstrated to be due to fluctuations within turbulent and nonturbulent fluid, as well as the difference in the conditional mean velocities. The actual conditional modelling takes into account the rates of entrainment, momentum transfer, and energy transfer. A Monte Carlo method is employed to solve for the intermittency factor, which, along with the conditional mean velocity and the Reynolds stresses, is shown to agree with experimental data.
 Publication:

AIAA, Aerospace Sciences Meeting
 Pub Date:
 January 1983
 Bibcode:
 1983aiaa.meetU....P
 Keywords:

 Computational Fluid Dynamics;
 Flow Distribution;
 Turbulent Jets;
 Two Dimensional Jets;
 Intermittency;
 Monte Carlo Method;
 Probability Density Functions;
 Reynolds Stress;
 Shear Stress;
 Transport Theory;
 Fluid Mechanics and Heat Transfer