Trajectory prediction of a self propelled hull by unsteady RANS computations

摘要

The turning circle manoeuvre of a, self-propelled Very Large Crude Carrier (VLCC) induced by a ro- tation of the rudder is numerically simulated through the integration of the Reynolds Averaged Navier- Stokes (RANS) equations coupled with the equa- tions of the motion of a rigid body. To this purpose, the unsteady RANS solver de- veloped at INSEAN will be used. In order to re- duce the computational effort and because of the relatively low Froude number, the free-surface will be kept fixed in its undisturbed configuration and modelled as a symmetry plane; moreover, the pro- peller will be simulated through a non-interactive actuator disk. The main parameters of the manoeuvre will be compared to the experimental data produced for the SIMMAN 2008 Workshop (www.simman2008.dk) and the flow field will be analyzed.