The flow in the near-field of a cross-shaped orifice jet is investigated experimentally in the
present study. The three components of the velocity field are obtained at different
longitudinal locations using time-resolved stereoscopic particle-image velocimetry
measurements. The mean and the instantaneous entrainment rates are calculated to study
the entrainment mechanism. The distribution of momentum thicknesses is also inspected in
the region of the axis switching. It is found that both the instantaneous entrainment rate and …