Numerical Simulation of Droplet-Laden Flow in a Cylindrical Duct in the Absence of Cross-Flow

The paper presents the results of numerical simulation of the local flow structure and pressure distributions at the wall and along the axis of the mixing chamber of a droplet-laden jet injected through a radial annular slit in the absence of a cross-flow. An increase in the rarefaction at the wall and in the near-axial zone in the initial cross-sections is observed with an increase in the velocity of the injected radial two-phase jet. Static pressure distributions along the tube axis are characterized by the presence of a rarefaction region along almost the entire length of the cylindrical channel. The conducted simulation has revealed the formation of recirculation zones in the area of the channel axis near its inlet. A comparison with the measurement data for a single-phase radial annular jet injected into the transverse main gas flow has shown a satisfactory agreement with the measurement data.