Far-Field Wake Modeling for Automatic Ship Detection from Satellite Imagery

An in-depth understanding of submarine control surfaces hydrodynam- ics during manoeuvring is a crucial step for reliable prediction methods at all de- sign stages. In this paper, a CFD based approach using a viscous RANS code is presented. The use of CFD allows a better understanding of the underlying physics to properly tune a modular framework in the well-known MMG approach, with the aim to better capture the effect and mutual interactions of different hull and sail configurations. The proposed method considers the actual flow around the stern planes interacting with the hull, including the amplification of forces given by the body-wing and wing-body interactions and considers the straightening effects of hull during manoeuvre. This paper tries to overcome the actual lack of available experimental evidences in literature for these topics. The understanding of this phe- nomenon, rarely considered in literature, is important in terms of design of the depth control system of the submarine while sailing. In the present study, the two standard configurations for stern plane installation are considered, namely cross- and X-planes, highlighting the differences in behaviour and hydrodynamic interac- tion due to configuration changes.