Monday 17th June 2024 – LJLL : Brahim Amaziane (Université de Pau)
Title: TBD Abstract TBD
Category: Séminaire 2023/2024
Monday 3rd June 2024 – LJLL : Sonia Fliss (ENSTA)
Title: Scattering by a Random Thin Coating of Nanoparticles Abstract This is a joint work with Laure Giovangigli and Amandine Boucart.We study the time-harmonic scattering by a heterogeneous object covered with a thin layer of randomly distributed nanoparticles. The size of the particles, their distance between each other and the…
Monday 6th May 2024 – LJLL : Clémentine Courtès (Université de Strasbourg)
Title: Optimal control in ferromagnetism: minimal time to reverse the magnetization Abstract In this presentation, we consider a ferromagnetic material with an ellipsoidal geometry immersed in an external magnetic field. In this case, the material magnetization satisfies the Landau-Lifshitz equation. We are interested in the following question: can we reserve…
Monday 18th March 2024 – INRIA : Chloé Audebert (Sorbonne Université)
Title: Adipose tissue dynamics modeling Abstract Adipose tissue, made of adipocyte cells (also known as fat cells), is central in many physiological pathways involved in obesity-related diseases. Clarifying the dynamics of adipocytes size and number evolution is crucial to better understand the pathophysiological basis of those diseases. We will study…
Monday 4th March 2024 – LJLL : Carlo Marcati (Università di Pavia)
Title: Neural Operator Surrogates for Elliptic PDEs Abstract Approximating solution sets of PDEs is an important task for many applications such as model order reduction and uncertainty quantification. In this talk, we consider the problem of approximating the solution operator of a PDE, viewed as a (nonlinear) map between subsets…
Monday 5th February 2024 – LJLL : Géraldine Pichot (INRIA Paris)
Title: Flow simulations in large-scale fractured porous media Abstract In underground environments, fractures are numerous and present at all scales (from cm to km), with very heterogeneous properties. The most commonly used model for fractured rocks is the Discrete Fracture Matrix (DFM) model, in which fractures are represented as structures…
Monday 15th January 2024 – INRIA : Maxime Theillard (University of California)
Title: Collocated Simulation of Incompressible Flows on Node-Based Octrees Abstract: Incompressible fluid flows are ubiquitous in science and engineering applications and lie at the heart of numerous research questions. Developing control strategies to minimize drag, understanding arterial wall deformation in the human heart, and even optimizing the energy consumption of…
Monday 18th December – INRIA : Véronique Martin (Université de Picardie Jules Verne)
Title: Heterogeneous domain decomposition methods Abstract: Heterogeneous domain decomposition methods are domain decomposition methods where one does not solve the same equation in each subdomain. There are two reasons for this to occur: first the physics are different in different regions, and second, the physics is the same, but one…
Monday 4th December – LJLL : Karim Ramdani (Institut Elie Cartan)
Title: A reconstruction method for the gravimetric inverse problem Abstract: For a constant density, the gravimetric inverse problem is equivalent to a geometric inverse problem. The reconstruction method that we propose hinges on the computation of harmonic momenta for the target domain. We will first present our algorithm, then convergence…
Monday 20th November – INRIA : Paul Vigneaux (Université de Picardie Jules Verne)
Title: Shallow Water models for viscoplastic flows Abstract: We present some developments on the Saint Venant equations from the Navier-Stokes-Bingham model. Specific finite volume schemes are designed to deal with the yield stress of the constitutive law. Comparisons with dam-break physical experiments will also be discussed.
Monday 3rd June 2024 – LJLL : Sonia Fliss (ENSTA)
Title: Scattering by a Random Thin Coating of Nanoparticles Abstract This is a joint work with Laure Giovangigli and Amandine Boucart.We study the time-harmonic scattering by a heterogeneous object covered with a thin layer of randomly distributed nanoparticles. The size of the particles, their distance between each other and the…
Monday 6th May 2024 – LJLL : Clémentine Courtès (Université de Strasbourg)
Title: Optimal control in ferromagnetism: minimal time to reverse the magnetization Abstract In this presentation, we consider a ferromagnetic material with an ellipsoidal geometry immersed in an external magnetic field. In this case, the material magnetization satisfies the Landau-Lifshitz equation. We are interested in the following question: can we reserve…
Monday 18th March 2024 – INRIA : Chloé Audebert (Sorbonne Université)
Title: Adipose tissue dynamics modeling Abstract Adipose tissue, made of adipocyte cells (also known as fat cells), is central in many physiological pathways involved in obesity-related diseases. Clarifying the dynamics of adipocytes size and number evolution is crucial to better understand the pathophysiological basis of those diseases. We will study…
Monday 4th March 2024 – LJLL : Carlo Marcati (Università di Pavia)
Title: Neural Operator Surrogates for Elliptic PDEs Abstract Approximating solution sets of PDEs is an important task for many applications such as model order reduction and uncertainty quantification. In this talk, we consider the problem of approximating the solution operator of a PDE, viewed as a (nonlinear) map between subsets…
Monday 5th February 2024 – LJLL : Géraldine Pichot (INRIA Paris)
Title: Flow simulations in large-scale fractured porous media Abstract In underground environments, fractures are numerous and present at all scales (from cm to km), with very heterogeneous properties. The most commonly used model for fractured rocks is the Discrete Fracture Matrix (DFM) model, in which fractures are represented as structures…
Monday 15th January 2024 – INRIA : Maxime Theillard (University of California)
Title: Collocated Simulation of Incompressible Flows on Node-Based Octrees Abstract: Incompressible fluid flows are ubiquitous in science and engineering applications and lie at the heart of numerous research questions. Developing control strategies to minimize drag, understanding arterial wall deformation in the human heart, and even optimizing the energy consumption of…
Monday 18th December – INRIA : Véronique Martin (Université de Picardie Jules Verne)
Title: Heterogeneous domain decomposition methods Abstract: Heterogeneous domain decomposition methods are domain decomposition methods where one does not solve the same equation in each subdomain. There are two reasons for this to occur: first the physics are different in different regions, and second, the physics is the same, but one…
Monday 4th December – LJLL : Karim Ramdani (Institut Elie Cartan)
Title: A reconstruction method for the gravimetric inverse problem Abstract: For a constant density, the gravimetric inverse problem is equivalent to a geometric inverse problem. The reconstruction method that we propose hinges on the computation of harmonic momenta for the target domain. We will first present our algorithm, then convergence…
Monday 20th November – INRIA : Paul Vigneaux (Université de Picardie Jules Verne)
Title: Shallow Water models for viscoplastic flows Abstract: We present some developments on the Saint Venant equations from the Navier-Stokes-Bingham model. Specific finite volume schemes are designed to deal with the yield stress of the constitutive law. Comparisons with dam-break physical experiments will also be discussed.
