In this thesis vortex flow in a round well is analyzed where water is injected through horizontally placed nozzles. The aim of this thesis is to determine the influence of the relative angle between each nozzle and radial direction a and the fluid flow Q on a angle described by a fluid particle on a free surface. Another goal of this thesis is to determine the trajectory of a fluid particle from the exit of a nozzle to the exit of a well by integrating calculated velocity field. Vortex flow under the assumption of an axi-symmetric flow is calculated where the flow from the nozzles is continously distributed on an inlet surface. Geometry models are created in the software package Salome, finite volume meshes are generated in the software package cfMesh and the calculations are made in the software package OpenFOAM. A transient solver, interFoam, from the software package OpenFOAM is used, for the goals of this thesis, to model free surface to determine the computational domain for the stationary solver from the same software package, simpleFoam. Results from both solvers are analyzed but the stationary solver simpleFoam is used for further analysis.The analysis of described fluid flow determined that the angle which the fluid particle decribes on the free surface is increased as the fluid flow Q and angle a grow due to rise in circular component of velocity relative to radial component.