Tuesday, 9 April 2019, 3 p.m. (sharp),

dr. Matteo Diez, CNR-INM

at the conference room of IMATI CNR in Pavia, will give a lecture titled:

Perspectives and Challenges for Shape Optimisation in Marine Engineering

as part of the Applied Mathematics Seminar (IMATI-CNR e Dipartimento di Matematica, Pavia).

At the end a refreshment will be organized.

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Abstract. In the context of marine engineering products whose performance is highly affected by shape parameters (such as surface/underwater vehicles, sustainable-energy conversion machines such as wind farms, wave-energy harvesting devices, etc.) computer simulations have played an increasing significant role in the design process. Addressing real-world complex industrial applications requires high-fidelity physics-based computational tools especially if innovative products/designs are sought after. In this context, the simulation-based design optimisation (SBDO) paradigm has demonstrated the capability of supporting the design decision process, not only providing large sets of design options but also exploring operational spaces by assessing design performance for large sets of operating/environmental conditions. In shape design, SBDO consists of three main elements: (i) a deterministic and/or stochastic simulation tool (integrating multidisciplinary physics-based solvers possibly with UQ), (ii) an optimisation algorithm, and (iii) a shape modification tool. The computational cost associated to solving a high-fidelity SBDO problem still remains quite unaffordable for most problems and users, especially for large design
spaces in the quest for the global optimum. To overcome this limitation, recent approaches have been developed and their potential demonstrated for application of interest. Specifically, design-space dimensionality reduction methods have gained an increasing interest, along with global metamodels, and global optimisation methods, providing the foundation for the development of modular tools for massive computational-cost reduction in high-fidelity SBDO for shape design in marine engineering. An overview with examples will be discussed during the seminar.