Abstract
A numerical model for the description of fluid flow, and suspended and bed-load sediment transport, is presented. Density effects are included in the momentum (Reynolds) equations and in the turbulence (k and ε) equations. Changes in bed levels are calculated from sediment continuity, and the finite-element grid is adapted to the geometry. The Reynolds equations and the transport equation for suspended sediment are solved numerically using a Taylor-Galerkin finite-element method. The flow at a surface mounted cylinder in a steady flow is predicted in good agreement with experiments. Periodic vortex shedding from a cylinder placed above a rigid bed is predicted in good agreement with laboratory experiments, provided that sufficiently detailed grids (∼5,000 nodes) are used. Scour calculations are performed for a cylinder in a steady flow with its underside placed at the level of the original flat bed. Predicted scour at a pipeline in steady flow is in good agreement with laboratory measurements reported in the literature.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.