Experimental investigations were conducted on a steel catenary riser (SCR) with different stiffness seafloor models both in dry and wet conditions. The motion oscillator and cell load connect the riser model in a tank, and forced motions with different amplitudes and frequencies were studied. Model tests are conducted in air and a small scale factor (1/435) is used. This model has been built having as reference a riser prototype in 900 m water depth and the numerical analysis is carried out in time domain using the developed CABLE3D. Results demonstrate the influence of the platform in-plane motion on the dynamic response of the riser model, and both of them are consistently good. This study provides a novel and simple experimental tool developed for testing of the SCR global dynamic analysis, and discusses the results including motion response, top tension and dynamic curvature near touchdown zone.
Dynamic tests in a steel catenary riser reduced scale model
Ships and offshore structures ; 12 , 8
2017
Aufsatz (Zeitschrift)
Englisch
Steel catenary riser , Scale (ratio) , Touchdown , Mathematical models , pipe-soil interaction , Curvature , Water depth , Steel , riser model test , Offshore oil wells , Dynamic response , Motion , Stiffness , touchdown point , Dynamic analysis , Prototypes , Dynamic tests , Small scale , Numerical analysis , Ocean floor , dynamic behaviour , Seafloor , Catenary
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