SIMULATION OF A SHIP MODEL'S PRESSURE SIGNATURE.
Research and development rept.,
NAVY MINE DEFENSE LAB PANAMA CITY FLA
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Both theoretical and experimental studies demonstrate that the still-water pressure signature of a moving displacement body on a plane horizontal boundary can be simulated by a prescribed time variation of the flow in a stationary intake-exhaust nozzle pair in a fluid otherwise at rest. In the theory, the nozzle system is treated as a source-sink pair in an ideal fluid of finite depth with a deformable free surface. A relationship is derived to show the dependence of a specified perturbation pressure on the strengths of the source-sink pair. An experiment with an intake-exhaust nozzle pair of variable flow rate demonstrated in principle that ship-model pressure signatures could be simulated. Author
- Marine Engineering
- Fluid Mechanics