Reduced Order Models for Optimal Flow Control

PAMM ◽  
2021 ◽  
Vol 20 (S1) ◽  
Author(s):  
Maria Strazzullo ◽  
Francesco Ballarin ◽  
Gianluigi Rozza
2016 ◽  
Vol 70 (1) ◽  
pp. 1-24 ◽  
Author(s):  
Alexandra Tallet ◽  
Cyrille Allery ◽  
Cédric Leblond

Author(s):  
Monica Nonino ◽  
Maria Strazzullo ◽  
Zakia Zainib ◽  
Francesco Ballarin ◽  
Gianluigi Rozza

In this work we will focus on recent advances in reduced order modelling for parametrized problems in computational fluid dynamics, with a special attention to the case of inverse problems, such as optimal flow control problems and data assimilation, and multi-physics applications. Among the former, we will discuss applications arising in environmental marine sciences and engineering, namely a pollutant control in the Gulf of Trieste, Italy and a solution tracking governed by quasi-geostrophic equations describing North Atlantic Ocean dynamic. Similar methodologies will also be employed in problems related to the modeling of the cardiovascular system. Among the latter, we will present further recent developments on reduction of fluid-structure interaction problems, based on our earlier work. Reduced order approaches for parametric optimal flow control will also be applied in combination with domain decomposition in view of further applications in multi-physics. This work is in collaboration with Y. Maday (UPMC Université Paris 06, France), L. Jiménez-Juan (Sunnybrook Health Sciences Centre, Toronto, Canada), P. Triverio (University of Toronto, Canada), R. Mosetti (National Institute of Oceanography and Applied Geophysics, Trieste, Italy).


1984 ◽  
Vol 31 (1) ◽  
pp. 86-98 ◽  
Author(s):  
Aurel A. Lazar

1995 ◽  
Vol 42 (3) ◽  
pp. 584-613 ◽  
Author(s):  
Yannis A. Korilis ◽  
Aurel A. Lazar

1993 ◽  
Vol 71 (2) ◽  
pp. 317-323 ◽  
Author(s):  
Juan Carlos Moreno Baños ◽  
Markos Papageorgiou ◽  
Clemens Schäffner

Author(s):  
Alexandra Tallet ◽  
Cédric Leblond ◽  
Cyrille Allery

Despite constantly improving computer capabilities, classical numerical methods (DNS, LES,…) are still out of reach in fluid flow control strategies. To make this problem tractable almost in real-time, reduced-order models are used here. The spatial basis is obtained by POD (Proper Orthogonal Decomposition), which is the most commonly used technique in fluid mechanics. The advantage of the POD basis is its energetic optimality: few modes contain almost the totality of energy. The ROM is achieved with the recent developed optimal projection [1], unlike classical methods which use Galerkin projection. This projection method is based on the minimization of the residual equations in order to have a stabilizing effect. It enables moreover to access pressure field. Here, the projection method is slightly different from [1]: a formulation without the Poisson equation is proposed and developed. Then, the ROM obtained by optimal projection is introduced within an optimal control loop. The flow control strategy is illustrated on an isothermal square lid-driven cavity and an anisothermal square ventilated cavity. The aim is to reach a target temperature (or target pollutant concentration) in the cavity, with an interior initial temperature (or initial pollutant concentration), by adjusting the inlet fluid flow rate.


1992 ◽  
Vol 35 (5) ◽  
pp. 325-355 ◽  
Author(s):  
Redha M. Bournas ◽  
Frederick J. Beutler ◽  
Demosthenis Teneketzis

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