SIMULATION OF A SHIP MODEL'S PRESSURE SIGNATURE.
Abstract
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1966
- Accession Number
- AD0642714
Entities
People
- A. G. Strandhagen
- E. A. Hogge
- T. C. Watson