Accession Number : ADA300455

Title :   Predicting the Motions of SWATH Ships in Waves. A Validated Mathematical Model.

Descriptive Note : Final rept.,

Corporate Author : NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD HYDROMECHANICS DIRECT ORATE

Personal Author(s) : McCreight, Kathryn K.

PDF Url : ADA300455

Report Date : JUN 1995

Pagination or Media Count : 72

Abstract : A mathematical model for predicting the motions of SWATH ships in waves in the frequency domain is presented. This mathematical model requires definition of only geometric and mass properties. While the mathematical model for the vertical plane presented here differs little from the one which has been used for about a decade, the transverse plane model differs from the previous model in various ways. Predictions are compared to measured model experimental responses to regular waves. These results show that the responses to regular waves are well-predicted for a range of hull forms and conditions.

Descriptors :   *MATHEMATICAL MODELS, *SHIP MOTION, VELOCITY, PITCH(MOTION), TRANSFER FUNCTIONS, VALIDATION, COMPARISON, DISPLACEMENT, COMPUTATIONAL FLUID DYNAMICS, CORRELATION, MATHEMATICAL PREDICTION, APPROXIMATION(MATHEMATICS), DRAG, LIFT, SHIP MODELS, SEAKEEPING, HYDRODYNAMICS, FREQUENCY DOMAIN, SHIP HULLS, POTENTIAL FLOW, CROSS FLOW, HYDROSTATIC PRESSURE, PROPELLER STRUTS.

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE