A COMPARISON BETWEEN THEORETICAL AND MEASURED WAVES ABOVE A SUBMERGED RANKINE BODY
HYDRONAUTICS INC LAUREL MD
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A comparison is made of theoretical and measured wave patterns produced by a submerged Rankine body 71 moving at constant speed. The measurements were made for a range of Froude numbers, but for a single depth length ratio 13. Calculations were made for both the far and near fields. The former utilize the stationary phase approximation and the latter involve numerical integrations and include the local disturbance. In general, the agreement between theory and experiment is as good as the agreement between measurements taken at the same Froude number but for two different body lengths 4.5 and 9.0 feet. It is concluded from these tests that first-order wave theory predicts the shape and amplitude of the waves produced by a fully submerged body with sufficient accuracy for almost all practical purposes.
- Fluid Mechanics