Accession Number : ADA266047


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


Descriptive Note : Technical rept. May 1991-May 1993


Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF AEROSPACE AND OCEAN ENGINEERING


Personal Author(s) : Wetzel, Todd G ; Simpson, Roger L ; Liapis, Stergios


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a266047.pdf


Report Date : 21 May 1993


Pagination or Media Count : 131


Abstract : 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


Descriptors :   *FLOW SEPARATION , *FINS , *BOUNDARY LAYER CONTROL , *TURNING(MANEUVERING) , *VORTEX GENERATORS , CONTROL , LAYERS , TURBULENCE , MOMENTS , FLOW VISUALIZATION , THREE DIMENSIONAL , DOCUMENTS , SEPARATION , MANEUVERS , FLOW , GENERATORS , OILS , SUBMARINES , HYDRODYNAMICS , BOTTOM , HANDS


Subject Categories : Submarine Engineering
      Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE