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Electronics and FluidicsFluid Mechanics

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

Authors: Kathryn K. McCreight; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD HYDROMECHANICS DIRECT ORATE
 
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.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Final rept.
Pages: 72
Report Date: JUN 95
Report Number: A554003
Keywords relating to this report:
*MATHEMATICAL MODELS
*SHIP MOTION
APPROXIMATION_MATHEMATICS_
COMPARISON
COMPUTATIONAL FLUID DYNAMICS
CORRELATION
CROSS FLOW
DISPLACEMENT
DRAG
FREQUENCY DOMAIN
HYDRODYNAMICS
HYDROSTATIC PRESSURE
LIFT
MATHEMATICAL PREDICTION
PITCH_MOTION_
POTENTIAL FLOW
PROPELLER STRUTS
SEAKEEPING
SHIP HULLS
SHIP MODELS
TRANSFER FUNCTIONS
VALIDATION
VELOCITY
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