New Marine Engineering Study Findings Have Been Reported from Gdansk University of Technology (Heave Plates with Holes for Floating Offshore Wind Turbines)

2022 MAY 12 (NewsRx) -- By a News Reporter-Staff News Editor at Engineering Daily News -- Investigators publish new report on marine engineering. According to news reporting out of Gdansk University of Technology by NewsRx editors, research stated, “The paper presents an innovative solution which is heave plates with holes. The long-known heave plates are designed to damp the heave motion of platforms.”

Our news reporters obtained a quote from the research from Gdansk University of Technology: “They are most often used for Spar platforms. The growing interest in this type of platform as supporting structures for offshore wind turbines makes it necessary to look for new solutions. Based on the available literature and the authors’ own research, it was concluded that the main element responsible for the damping of heave plates is not so much the surface of the plate, but its edge. Therefore, it was decided to investigate the effect of the holes in heave plates on their damping coefficient. Model tests and CFD calculations were performed for three different structures: a smooth cylinder, a cylinder with heave plates with a diameter of 1.4 times the diameter of the cylinder, and a cylinder with the same plate, in which 24 holes were cut (Fig. 1). Free Decay Tests (FDT) were used to determine the damping coefficient and the natural period of heave, and then the values obtained were compared.”

According to the news editors, the research concluded: “The full and punched heave-plate designs were also tested with regular waves of different periods to obtain amplitude characteristics. The results obtained are not unequivocal, as a complex motion appears here; however, it is possible to clearly define the area in which the damping of a plate with holes is greater than that of a full plate.”

For more information on this research see: Heave Plates with Holes for Floating Offshore Wind Turbines. Polish Maritime Research, 2022,29(1):26-33. (Polish Maritime Research - http://www.degruyter.com/view/j/pomr). The publisher for Polish Maritime Research is Sciendo.

A free version of this journal article is available at https://doi.org/10.2478/pomr-2022-0003.

Our news journalists report that more information may be obtained by contacting Ciba Ewelina, Gdansk University of Technology, Poland. Additional authors for this research include Dymarski Pawel, Grygorowicz Miroslaw.

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