FLOWIS-Deliverable D7.INS: CFD analysis of the stabilized phase of the turning circle - preliminary

This report presents the progress of the activities pursued within Work Package "WP2 - CFD Computations in Manoeuvring", task "WE23: CFD analysis of the stabilized phase of the turning circle", whose final goal is the analysis of the flow field around the Horizon frigate in steady turning manoeuvre. The analysis will be performed for the steady phase of the manoeuvre, propeller effects will be taken into account by means of a generalised unsteady hybrid RANS/BEM methodology. Two different conditions will be studied, corresponding to the full scale trials 15 degrees rudder starboard and 25 degrees rudder starboard manoeuvres (approaching speed 18knots). These operative conditions were already analysed by using an interactive simplified propeller model; the results will allow for a direct comparison between the two models and for an analysis of unsteady phenomena related to the propeller operation.