Affiliations: INSEAN (Italian Ship Model Basin), Via di Vallerano
139, Roma, Italy. E-mail: [email protected]
Abstract: In the present paper the results of the wake survey in two stern
sections of a twin screw ship model, located just upstream the propeller disk
and behind the directional rudder, are presented. Experiments have been
performed in a large towing tank by using a Laser Doppler Velocimeter and phase
sampling techniques, in order to analyse wake evolution with the propeller
angular position. The main features of the propeller installation are
highlighted as well as the strong and complex interaction of the propeller with
the hull wake, especially in the brackets region and downstream the directional
rudder.