Turbulent jet is a momentum-driven flow coming out of a nozzle or an orifice. The study of turbulent jets helps us to understand the physical phenomena such as mixing process in an atomizer, jet-cooling and jet-cutting. In the current study, DNS (direct numerical simulation) and RANS (Reynolds averaged Navier Stokes) modelling techniques are used for simulating the flow of a free planar jet at Re = 4000 and the results were compared with the DNS of Klein et al. [2003]. Numerical oscillations observed at the outflow boundary with the use of conventional Neumann condition, were rectified using alternative schemes. In the later part of the study, the shape of the inlet is modified to resemble a pintle, which is a sub-element in airblast atomizers, and the effects of this modification on the near-field region of a jet are investigated using RANS. The k-omega SST turbulence model has been chosen after the comparison of different turbulence models. The effects of entrainment and inflow turbulent intensity on the jet flow were studied. Further, this study is being carried out by using eddy resolved modelling techniques. Some preliminary results of the same will be presented.