Conditional probability densities in a turbulent heated round jet
Abstract
A digital data acquisition system and a technique for determining a turbulent/nonturbulent interface from the probability density function of a passive scalar are adopted to study an axisymmetric heatedair turbulent jet with a coflowing external stream. Probability density functions of velocity and temperature fluctuations, as well as their products, are determined in the turbulent part of the flow. The probability density functions show increasing divergence from Gaussian distributions as the distance from the jet axis increases. Departures from Gaussian distributions are in general greater for inward than for outward radial motion, and cannot be explained on the basis of a cumulant discard approach assuming a GramCharlier distribution.
 Publication:

Institution of Engineers, Australian Hydraulics and Fluid Mechanics Conference
 Pub Date:
 December 1977
 Bibcode:
 1977ieah.confS....A
 Keywords:

 Jet Flow;
 Probability Density Functions;
 Turbulent Jets;
 Data Acquisition;
 Flow Velocity;
 Normal Density Functions;
 Temperature Distribution;
 Fluid Mechanics and Heat Transfer