Physically sound, self-learning digital twins for sloshing fluids

Beatriz Moya (1) , Iciar Alfaro (1) , David Gonzalez (1) , Francisco Chinesta (2) , Elías Cueto (1)

1 University of Zaragoza - Universidad de Zaragoza [Zaragoza]
2 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux

In this paper, a novel self-learning digital twin strategy is developed for fluid sloshing phenomena. This class of problems is of utmost importance for robotic manipulation of fluids, for instance, or, in general, in simulation-assisted decision making. The proposed method infers the (linear or non-linear) constitutive behavior of the fluid from video sequences of the sloshing phenomena. Real-time prediction of the fluid response is obtained from a reduced order model (ROM) constructed by means of thermodynamics-informed data-driven learning. From these data, we aim to predict the future response of a twin fluid reacting to the movement of the real container. The constructed system is able to perform accurate forecasts of its future reactions to the movements of the containers. The system is completed with augmented reality techniques, so as to enable comparisons among the predicted result with the actual response of the same liquid and to provide the user with insightful information about the physics taking place.

Mots clés: General Biochemistry; Genetics and Molecular Biology; General Agricultural and Biological Sciences; General Medicine

Domaines: Matériaux

Beatriz Moya, Iciar Alfaro, David Gonzalez, Francisco Chinesta, Elías Cueto. Physically sound, self-learning digital twins for sloshing fluids. PLoS ONE, 2020, 15 (6), pp.1-15. ⟨10.1371/journal.pone.0234569⟩. ⟨hal-02885379⟩