PORTALE DELLA DIDATTICA

PORTALE DELLA DIDATTICA

PORTALE DELLA DIDATTICA

Elenco notifiche



Model order reduction for parametric nonlinear problems: overview and applications

01TINUR

A.A. 2024/25

Course Language

Inglese

Degree programme(s)

Doctorate Research in Scienze Matematiche - Torino

Course structure
Teaching Hours
Lezioni 15
Lecturers
Teacher Status SSD h.Les h.Ex h.Lab h.Tut Years teaching
Strazzullo Maria   Ricercatore L240/10 MATH-05/A 15 0 0 0 1
Co-lectures
Espandi

Context
SSD CFU Activities Area context
*** N/A ***    
Nonlinear systems are ubiquitous in many scientific and industrial contexts. Their complex behaviors increase model description capabilities of intricate physical phenomena compared to linear systems. However, understanding these models often requires unbearably high costs using standard discretization techniques regarding storage and computational time. This limits the capability of analysis, design, and optimization of the model, especially in parametric settings. Reduced Order Models ROMs address these challenges, accelerating numerical simulations through a surrogate, yet accurate, lower-order approximation of the discrete nonlinear system. The course will provide an introduction to ROMs and their application in nonlinear settings, highlighting the strengths of such an approach and its limitations, related to these complex tasks, such as lack of generality, missing error certification analysis, and robustness. One of the main goals is to provide a general overview of the latest improvements achieved in the past few years, focusing on many applied contexts, such as turbulence, control, and bifurcations.
numerical methods for PDE, solving strategies for nonlinear systems, basic knowledge Python
1) Introduction to reduced order methods, Kolmogorov n-width 2) Proper Orthogonal Decomposition and Greedy 3) Extension to nonlinear problems 4) Hyper-reduction strategies 5) Example: Navier-Stokes 6) Reduction for * Turbulence modeling * Optimal Control for nonlinear problems * Bifurcations
On site
Oral presentation
P.D.1-1 - February
The proposed calendar is the following February 3rd: 2:00 PM - 4:00 PM February 6th: 2:00 PM - 4:00 PM February 10th: 2:00 PM - 4:00 PM February 13th: 2:00 PM - 4:00 PM February 17th: 2:00 PM - 4:00 PM February 19th: 2:00 PM - 4:00 PM February 21st: 2:00 PM - 5:00 PM