@Article{MeléndezVásquezAvil:2021:ThDyBe,
               author = "Mel{\'e}ndez V{\'a}squez, Joseph Arthur and Avila, Juan Pablo 
                         Julca",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade Federal do ABC (UFABC)}",
                title = "Three-dimensional dynamic behaviour of flexible catenary risers 
                         with an internal slug flow",
              journal = "Journal of Fluids and Structures",
                 year = "2021",
               volume = "107",
                pages = "e103409",
             keywords = "Flexible riser, Slug flow, Fluid–structure interaction.",
             abstract = "This work analyses the three-dimensional dynamic response of 
                         flexible catenary risers when subjected to the effects of an 
                         internal slug flow. The interaction between the flexible riser and 
                         the internal slug flow is a rather complex phenomenon, and this is 
                         because the forces due to the acceleration of the internal fluid 
                         influence the riser dynamics, which, in turn, influences the slug 
                         flow motion in its interior. In order to carry out this analysis, 
                         a new computational tool called SLUGFLEX has been developed, which 
                         is composed by two computational codes: the code that calculates 
                         the structural dynamic response of the flexible riser, and the 
                         other one that predicts the development of the internal slug flow. 
                         In the structural analysis, the spatial discretization of the 
                         riser is performed using spatial Euler beam finite elements, which 
                         suffer large displacements, although with small deformations. The 
                         tangent stiffness matrix and the internal force vector of the 
                         structure are calculated using the corotational approach. The 
                         internal slug flow, whose key feature is the intermittence of two 
                         different regions: a liquid slug and a large bubble of gas, is 
                         mathematically modelled by using a new one-dimensional lagrangian 
                         slug tracking method, which has been based on a model developed 
                         for straight pipes, and over which the effects of the curvature of 
                         the riser and its dynamics were added. The dynamic response of the 
                         riser is calculated by using the constant average acceleration 
                         method, in combination with the incremental iterative Newton 
                         Raphson scheme for follower loads. The numerical results show good 
                         agreement when compared to the experimental ones obtained from the 
                         literature.",
                  doi = "10.1016/j.jfluidstructs.2021.103409",
                  url = "http://dx.doi.org/10.1016/j.jfluidstructs.2021.103409",
                 issn = "0889-9746",
             language = "en",
           targetfile = "vasquez_three.pdf",
        urlaccessdate = "19 maio 2024"
}