École Nationale Supérieure de
Techniques Avancées

Abstract

During an internship at HydrOcean, a full review of the verification and validation process for numerical codes have been realized. This work revealed several potential improvements to the usual processes and a new method inspired by them was theorized. This method was then used on SPH-flow software, a CFD code using a lagrangian resolution of the Navier-Stokes equation in their weakly compressible variant. To achieve this, an IT framework was created and applied to an experimental test case of dihedral shape slamming into a water tank. Though results didn’t live up to expectations, the method showed promise by splitting the error into its source terms and related uncertainties. Moreover, a verification work was executed for a CIPEH project on the lowering of a subsea package through the splash zone. The goal was to verify a catenary model and perform a CFD simulation of package in a sling load configuration entering the splash zone. This objective was achieved but this study also raised the problem of a possible insufficient level of discretization to capture the full dynamic.