Abstract
When a submarine turns in the horizontal plane it experiences a complex flow around the hull, casing and sail. This results in out-of-plane loads in heave and pitch. To design the Aft Control Surfaces (ACS) such that adequate force can be applied to counteract these out-of-plane loads, it is necessary to be able to accurately predict the magnitude of these forces during the turn. In this paper, predictions of the BB2 generic submarine with X-plane ACSs turning in the horizontal plane using a Coefficient Based Model (CBM) were compared with those from a fully coupled Computational Fluid Dynamics (CFD) model, and results from free running model tests. The CFD predicted the measured ACS angles well, whereas the CBM predicted that much larger angles were required. This is possibly due to the CBM not accurately predicting the out-of-plane loads on the turning submarine. Further work is required to investigate this issue.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
