Study on optimal arrangement of flexible riser in internal solitary wave
GUO Chunlong
YANG Yongchun
DONG Chongzheng
Abstract：Based on the ANSYS Workbench platform,the three-dimensional internal solitary wave(ISW)numerical flume was established.Considering the different propagation directions of the ISW,the numerical simulation of the flexible riser with different tilt angles under the action of ISW was car-ried out,and the dynamic response laws of the flexible riser with different arrangements were analyzed.The point displacement,support reaction and section shear stress of the flexible riser in different work-ing conditions were compared and analyzed.And the results showed that the vertical component of the fluid force on the inclined flexible riser in ISW could not be ignored,and the support reaction of the flexible riser would be affected.As the arranged flexible riser tends to be vertical,the displacement,support reaction and section shear stress of the flexible riser all gradually decreased.Compared with these indicators of different tilt directions of the flexible riser,the above three indicators were greater when the tilt direction of the flexible riser was consistent with the propagation direction of the ISW.Therefore,when the riser was arranged in sea areas with frequent ISW,it should be arranged as close to the vertical as possible,and the tilt direction of the riser should be avoided from the same as the propagation direction of the ISW.
Keywords：internal solitary wavefluid-structure interactioninclined flexible riseroptimal arrange-ment
Publication Date：2025-12-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 47-55 )