Design Considerations for Selection of Flexible Riser Configuration
نویسندگان
چکیده
A brief review of recent literature on riser design is presented and a concise description of the design process is given. Effects of hydrodynamical design parameters on marine flexible riser design are then reviewed. Riser dynamic analyses are described which substantiate design criteria for the selection of riser configuration in deep and shallow water. The results of dynamic analyses using computerized numerical models are presented in this paper in graphical form for the selected riser design cases. Output includes envelopes of riser coordinates, axial force and time histories of forces and wave surface profiles. The results obtained highlight the significance of motion spatial gradients for the combined flow of waves, currents and vessel heave motion on the selection optimum of riser configuration to address design requirements. NOMENCLATURE A = flexible pipe cross-sectional area H = water pressure head (h-s)
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