BLUNT BODY SEPARATION CONTROL AND VORTICITY MANAGEMENT AND CONCEPT DEVELOPMENT

VE&A PROPOSES TO STUDY THE VISCOUS FLOW AND SEPARATION DYNAMICS AROUND A TYPICAL SUBMARINE CONFIGURATION AT HIGH ANGLES OF ATTACK. A "PRANDTL TANK" METHOD OF ANALYSIS WILL BE USED. THIS TECHNIQUE HAS BEEN DESIGNED BY VE&A AND IS BASED ON THE WELL KNOWN STUDIES OF L. PRANDTL. FAST, INEXPENSIVE PC COMPUTER PROGRAMS DEVELOPED BY VE&A WILL BE USED TO GUIDE THE TESTS. THESE METHODS ALSO ALLOW PREDICTION OF REYNOLDS NO. EFFECTS. THESE PROGRAMS ARE DESCRIBED HEREIN. FLOW CONTROL METHODS TO BE STUDIED IN THIS PROGRAM INCLUDE: (1) BODY OSCILLATIONS, (2) SUCTION AND BLOWING, (3) OSCILLATING SURFACES, (4) MOVING SURFACES, AND (5) MAGNETO HYDRODYNAMICS. A FEASIBILITY COMPARISON CHART WILL BE MADE FOR THESE METHODS. ANTICIPATED BENEFITS/POTENTIAL APPLICATIONS - (1) THE PROPOSED PROJECT IS EXPECTED TO HAVE APPLICATION TO IMPROVE THE PERFORMANCE OF SUBMARINES AND SHIPS. METHODS OF IMPROVING PERFORMANCE AND CONTROL WILL RESULT. (2) COMMERCIAL APPLICATION OF THE CONCEPTS DEVELOPED WILL BE USED TO IMPROVE ALL SHIPS. THIS INCLUDES CARGO SHIPS, TANKERS, AND RECREATION AND PLEASURE BOATS. ALSO AMERICA'S CUP VESSELS WILL BENEFIT. THE CONCEPTS DEVELOPED WITH MODIFICATION WILL ALSO APPLY TO AIRCRAFT DESIGNS.