Join this Tech Talk and learn more about the methodology for constructing the Vortex Induced Vibration (VIV) co-simulation on the 3DEXPERIENCE platform and the key figures that influence the process.
The solution of a three-dimensional VIV problem generally requires numerical simulation, and there are modelling challenges that need to be overcome if this is to be done efficiently. Typical applications for VIV tend to involve relatively long, slender structures such as pipes/risers/cables. Careful consideration is required to control the efficiency of the solution when meshing the fluid domain (FMK) and structural domain (SYE). The nature of the fluid solver and expected movement of the structure requires that any deformation be accommodated by ‘mesh morphing’ as elements cannot be created nor destroyed, and FMK includes functionality to help control this process.
Key to the operation and quality of the co-simulation is the coupling between the fluid and solid solvers and a number of methods are available to cater for this process. Depending on the nature of the physics being modelled, coupling in VIV co-simulations may be classed as moderately coupled which requires an implicit coupling technique to ensure reasonable levels of accuracy.
Three-dimensional VIV problems are difficult to verify as the nature of the problem makes experimental set-ups expensive but some comparison has been done with published results from a paper that considers a tensioned, vertical, composite pipe in a test tank.