Sea benchmark results
File(s)
Published version
Author(s)
Type
Chapter
Abstract
The chapter presents and discusses L3 and L2 sea benchmark results. The design performance of the DTMB 5415 model is assessed using a variety of physical models and solvers (from Reynolds-Averaged Navier Stokes equations to potential flow models), and spatial discretizations, which are combined together in dedicated multi-fidelity frameworks developed by the sea team. The present effort highlights how the dimensionality of the optimization problem may be a critical issue for surrogate model training. Nevertheless, it is shown how the proposed multi-fidelity approaches are able to achieve significant design performance improvements, even if only
a few high-fidelity computations are used, with a ratio between the number of high- and low-fidelity evaluations
required to solve the global optimization problem as low as nearly 1/50. Finally, the challenges that arise during
the process are discussed and future research directions are outlined.
a few high-fidelity computations are used, with a ratio between the number of high- and low-fidelity evaluations
required to solve the global optimization problem as low as nearly 1/50. Finally, the challenges that arise during
the process are discussed and future research directions are outlined.
Date Issued
2025-03-18
Citation
Goal-Driven, Multi-Fidelity Approaches for Military Vehicle System-Level Design [STO-TR-AVT-331], 2025, pp.8-1-8-26
ISBN
978-92-837-2509-1
Publisher
NATO STO
Start Page
8-1
End Page
8-26
Journal / Book Title
Goal-Driven, Multi-Fidelity Approaches for Military Vehicle System-Level Design [STO-TR-AVT-331]
Copyright Statement
© 2025 NATO STO.
Identifier
https://publications.sto.nato.int/publications/STO%20Technical%20Reports/STO-TR-AVT-331/$$TR-AVT-331-ALL.pdf
Article Number
Chapter 8