Ocean Systems Engineering

Techno-Press (테크노프레스)
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Experimental studies of impact pressure on a vertical cylinder subjected to depth induced wave breaking

  • Received : 2022.07.14
  • Accepted : 2022.12.05
  • Published : 2022.12.25
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Abstract

This paper describes experimental studies of impact pressure generated by breaking regular waves in shallow water on a vertical cylinder. Experimental work was carried out in a shallow water flume using a 1:30 - scale model of a vertical rigid circular hollow cylinder with a diameter 0.2 m. This represents a monopile for shallow water offshore wind turbines, subjected to depth induced breaking regular waves of frequencies of 0.8 Hz. The experimental setup included a 1 in 10 sloping bed followed by horizontal bed with a constant 0.8 m water depth. To determine the breaking characteristics, plunging breaking waves were generated. Free surface elevations were recorded at different locations between the wave paddle to the cylinder. Wave impact pressures on the cylinder at a number of elevations along its height were measured under breaking regular waves. The depth-induced wave breaking characteristics, impact pressures, and wave run-up during impact for various cylinder locations are presented and discussed.

Keywords

Acknowledgement

The authors appreciate the wave flume and experimental facilities provided by the Department of Ocean Engineering. The first author wishes to express his gratitude to the instrumentation team for their assistance during the trials.

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