This review article focuses on the near-field flow characteristics of coaxial circular jets that,
despite their common usage in combustion processes, are still not well understood. In …

The quality and efficiency of laser-aided direct metal deposition largely depends on the
powder stream structure below the nozzle. Numerical modeling of the powder concentration …

In a previous paper we proposed a new model for turbulent flows, called the fractal model
(FM), which is applicable both to RANS and LES formulations. Here, the model is extended …

In this paper, planar time-resolved particle image velocimetry measurements are reported in
the near-field of a coaxial jet at velocity ratios, ru= 0.66, 1.0 and 1.32. At each ru, at least two …

The modeling of fluids in the supercritical regime is addressed at conditions characteristic of
liquid-propelled rocket engines, whose increasing performance demands paved the way for …

The flow field of a coaxial jet configuration having inner to outer diameter ratio Di/Do≅ 0.5 is
studied for two values of the velocity ratio, Ui/Uo= 0.30 and Ui/Uo= 0.67, both with a 5 mm …

The accurate modeling of thermal gradients and distortion generated by directed energy
deposition additive manufacturing requires a thorough understanding of the underlying …

The near-field region of a coaxial jet having inner to outer diameter ratio di/do= 0.39 is
investigated experimentally for four ratios of annular to central jet velocities of η= 0.18, 0.48 …

The present experimental investigation is devoted to the mixing characteristics of a passive
scalar in the near-field region of a moderately swirling jet issuing from a fully developed …

An experimental analysis of the dominant instabilities in the near field of two coaxial jets is
presented and discussed. Different inner/outer jet velocity pairs (U i, U o) have been tested …