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This paper aims to give an overview of very recent European coordinate efforts to implement technologies of the “4.0 Industry” in the nuclear deconstruction sector. This objective aims to benefit from the lever of efficiency and reliability represented by innovative technologies on all the value chain of the dismantling, from early characterization to the dismantling operations themselves through engineering studies, waste management, project management and coordination of multiple stakeholders of each project. The outcomes of five projects (INNO4GRAPH, LD-SAFE, PLEIADES, CLEANDEM and INSIDER) are summarized here. They result in a unique data and knowledge common base, as well as in a significant sharing of experience based on dismantling projects already carried out or to come. They also result in designing new tools or methods natively taking into account the needs of a maximum of dismantling operators, as well as new test facilities. This will allow the undertaken joint work and collaboration to be continued. All of this paves the way to further collaborative projects and developments, in order to continue to implement reliable new technologies and processes in European dismantling projects to make future dismantling operations more efficient, safer and more cost-effective.

RESUME. Une méthode de Wagner généralisée pour l'étude de l'impact de sections de forme arbitraire est présentée. Cette méthode permet de s'affranchir de l'hypothèse de faible angle mort sur laquelle reposent classiquement les méthodes de Wagner linéarisées. Son domaine d'application s'étend à des formes asymétriques. Cela est rendu possible par la transformation systématique du problème en celui d'un écoulement autour d'une plaque plane horizontale, tout en tenant compte de la géométrie exacte de la surface mouillée. La théorie des problèmes de Riemann-Hilbert est utilisée pour résoudre le problème transformé. Les résultats de ce modèle sont comparés à d'autres résultats numériques et expérimentaux. ABSTRACT. A generalized Wagner method for studying water impact of arbitrary section is presented. This method does not require the deadrise angle to be small, unlike the classical linearized Wagner model. It can be applied to asymmetric sections by using conformal mapping. The problem is systematically transformed into an horizontal flat plate problem but it takes into account the exact geometry of the wetting surface. The flow around the flat plate is then calculated by using the theory of Riemann-Hilbert problems. The model is tested against both numerical and experimental results.

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