The motions and forces of the two rigid bodies, namely URA and the buoyancy can, are coupled in the simulation. The tether chain is modeled by bar elements (experienced only tensions) while the buoyancy can is modeled as a rigid cylinder (beam element). The buoyancy can is connected to the URA through a tether chain, which provides the vertical upright force on the URA and in turn the tension to the vertical riser. The URA connects a vertical steel riser and a flexible jumper, both of which are modeled by beam elements (experienced both tensions and bending moments) in COUPLE. In using COUPLE, URA is modeled as a rigid body. The numerical scheme is mainly based on an existing in-house numerical code, known as COUPLE. This study focuses on the development of the numerical scheme for the dynamic simulation of a FSHR whose flexible jumper is connected to a moored floating production vessel, say floating production, storage and offloading (FPSO). A FSHR mainly consists of a buoyancy can, a vertical steel riser, a flexible jumper and an upper riser assembly (URA). Free Standing Hybrid Riser (FSHR) is an innovative concept for the riser to transport oil and gas from the seabed to a floating production platform deployed in deep water.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |