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- W2393600979 abstract "We presented experimental investigation concerning vortex induced vibration(VIV) of marine risers with crescent spoilers pasted on the surface as the suppression devices and analyses the sensibility in this paper.Several plexiglass pipes with external diameters of 18 mm,wall thickness 2 mm and a total length of 1.5 m are used to simulate marine risers.Risers are able to vibrate in both in-line(I-L) and cross-flow(C-F) direction through universal joints,the current velocity is varied from 0.6 m/s and 0.7 m/s.According to the differences of screw height,screw pitch and erected 八' or inverted,we designed 8 suppression risers and a bare model without suppression devices but with equal load via injecting water.Dynamic strain records were obtained through the dynamic strain gauges which were stick on the surface of the risers.The experimental data are contrastive studied and the results indicate that the suppression devices of crescent spoilers can effectively decrease the displacement of VIV in C-F direction.If the crescent spoiler are pasted in the style of inverted 八',the efficiency is a little better,which doesn't deny the all-direction efficiency.The characters of suppression devices including screw height and screw pitch can influence the efficiency,and the height is higher or the pitch is farther,the efficiency is better." @default.
- W2393600979 created "2016-06-24" @default.
- W2393600979 creator A5018228245 @default.
- W2393600979 date "2013-01-01" @default.
- W2393600979 modified "2023-09-25" @default.
- W2393600979 title "Experimental Investigation of Sensibility of a New Type of VIV Suppression Device" @default.
- W2393600979 hasPublicationYear "2013" @default.
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