Effects of Vortex Generating Fins and Jets on the Crossflow Separation of a Submarine in a Turning Maneuver.

摘要

The effects of vortex generating fins and jets on the crossflow separation of A 688 class submarine in a turning maneuver was studied. The jets and fins were placed along the top and bottom centerlines of the submarine. Fin size, location, and orientation was studied. Jet strength and orientation were also studied. Oil flow visualization was used to document changes in flow separation location, and forces and moments were measured to quantify vortex generator effectiveness. The fins were found to be extremely effective in delaying crossflow separation and thus changed the hydrodynamic forces and moments drastically. The jets, on the other hand, were less effective.... Boundary layer, Control, Three dimensional separation, Turbulence.