In the present work, numerical simulation of a confined two-phase particulate jet emanating from a circular nozzle has been performed using Euler-Euler approach and incorporating four-way coupling. The effects of particle size (in the range 50-200 mu m) and solid loading ratio (in the range 1-5) on the gas phase flow field as well as turbulence have been studied at different co-flow velocities (i.e. 2 m/s, 5 m/s and 10 m/s). It has been observed that the particles have a strong effect on the flow field and the turbulence of the gas phase. As a consequence, gas phase velocity decay rate has been reduced along the center line, and turbulence has been attenuated in the near field region due to the presence of the particles. For a single-phase confined jet, the radial velocity decay is observed in the near-field region (X/D<10). In the presence of a co-flow, the radial velocity has increased beyond X/D = 10. In the two-phase jet, the gas phase velocity is decayed in the radial direction throughout the domain. Also, jet half width is reduced with decreasing particle diameter and increasing solid loading ratio (SLR). (C) 2016 Elsevier B.V. All rights reserved.