| 摘要 |
A method of reducing skin friction drag on a marine hull comprising imparting ultrasonically-induced cavitation at a boundary layer at the hull-water interface. The includes providing a sonification plate on at least a portion of a wettable area of the hull to establish a boundary layer interface between the sonification plate and the water medium, and energizing the sonification plate to produce microcavitation bubbles at the boundary layer interface whereby to alter the Reynolds number, kinematic viscosity, and coefficient of friction. The sonification plate is hermetically sealed and includes an array of ultrasonic transducers, which may be mounted on an interior or exterior surface of the hull. The energizing step nucleates microcavitation bubbles upon entrained gases and/or particulate matter residing in the water medium.
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