Accession Number:

AD0642714

Title:

SIMULATION OF A SHIP MODEL'S PRESSURE SIGNATURE.

Descriptive Note:

Research and development rept.,

Corporate Author:

NAVY MINE DEFENSE LAB PANAMA CITY FLA

Report Date:

1966-10-01

Pagination or Media Count:

47.0

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

Subject Categories:

  • Marine Engineering
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE