Guest Editors:
- Francisco Chinesta (PIMM Laboratory, Arts et Métiers Institute of Technology, HESAM Université, Paris, France)
- Pierre Ladeveze (Université Paris-Saclay, Gif-sur-Yvette, France)
- Yvon Maday (Université Pierre et Marie Curie, Paris, France)
This topical issue groups selected research contributions on Model Order Reduction, a new paradigm in the field of simulation-based engineering sciences, and one that can tackle the challenges and leverage the opportunities of modern ICT technologies.
Despite the impressive progress attained by simulation capabilities and techniques, a number of challenging problems remain intractable. These problems are of different nature, but are common to many branches of science and engineering. Among them are those related to high-dimensional problems, problems involving very different time scales, models defined in degenerate domains with at least one of the characteristic dimensions much smaller than the others, model requiring real-time simulation, and parametric models. All these problems represent a challenge for standard mesh-based discretization techniques; yet the ability to solve these problems efficiently would open unexplored routes for real-time simulation, inverse analysis, uncertainty quantification and propagation, real-time optimization, and simulation-based control - critical needs in many branches of science and engineering. Model Order Reduction offers new simulation alternatives by circumventing, or at least alleviating, otherwise intractable computational challenges.
This topical issue addresses mainly model reduction techniques based on the Proper Orthogonal Decomposition, the Proper Generalized Decomposition, and Reduced Basis methodologies.