The twophase turbulent jet
Abstract
Turbulent twophase axisymmetric jets, in which the volume fraction of the secondary phase is much less than unity, are considered. Emphasis is placed on cases which the mass fraction of particles is of order unity. The available experimental measurements are examined and it is found that physical arguments and dimensional analysis lead to good correlations of the mean fluid velocity and particle mass flux fields in terms of the initial loading of particles. The jet may be simply described with reference to the momentum transfer between the phases. Two main regions exist: a near field in which essentially no momentum has been transferred between the phases, and a far field in which sensibly all the momentum resides in the fluid phase. Exponential and power law functions of the ratio of the mass density of particles to that of the suspending fluid at the jet orifice are found to correlate much of the data with the corresponding single phase jet. A relationship for the virtual origins of the far field in terms of the integral invariants of the flow is derived and supported by the measurements.
 Publication:

International Journal of Heat and Mass Transfer
 Pub Date:
 February 1979
 Bibcode:
 1979IJHMT..22..279M
 Keywords:

 Axisymmetric Flow;
 Combustible Flow;
 Dimensional Analysis;
 Turbulent Jets;
 Two Phase Flow;
 Correlation;
 Energy Transfer;
 Far Fields;
 Flow Velocity;
 GasSolid Interfaces;
 Momentum Transfer;
 Particle Mass;
 Particle Size Distribution;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer