6 papers
Data-driven model order reduction for wave propagation in materials with damage and nonlinearities
Saddam Hijazi, Nikiema Fulgence, Hannah Burmester +2
In this work, we consider wave propagation in materials characterized by nonlinear properties or damage. To accelerate the simulations of the resulting high-dimensional problems, w…
POD-Galerkin reduced order models and physics-informed neural networks for solving inverse problems for the Navier-Stokes equations
Saddam Hijazi, Melina Freitag, Niels Landwehr
We present a Reduced Order Model (ROM) which exploits recent developments in Physics Informed Neural Networks (PINNs) for solving inverse problems for the Navier--Stokes equations…
Data-Driven POD-Galerkin Reduced Order Model for Turbulent Flows
Saddam Hijazi, Giovanni Stabile, Andrea Mola +1
In this work we present a Reduced Order Model which is specifically designed to deal with turbulent flows in a finite volume setting. The method used to build the reduced order mod…
Non-Intrusive Polynomial Chaos Method Applied to Full-Order and Reduced Problems in Computational Fluid Dynamics: a Comparison and Perspectives
Saddam Hijazi, Giovanni Stabile, Andrea Mola +1
In this work, Uncertainty Quantification (UQ) based on non-intrusive Polynomial Chaos Expansion (PCE) is applied to the CFD problem of the flow past an airfoil with parameterized a…
The Effort of Increasing Reynolds Number in Projection-Based Reduced Order Methods: from Laminar to Turbulent Flows
Saddam Hijazi, Shafqat Ali, Giovanni Stabile +2
We present two different reduced order strategies for incompressible parameterized Navier-Stokes equations characterized by varying Reynolds numbers. The first strategy deals with…
Pod-Galerkin Reduced Order Methods for CFD Using Finite Volume Discretisation: Vortex Shedding Around a Circular Cylinder
Giovanni Stabile, Saddam Hijazi, Andrea Mola +2
Vortex shedding around circular cylinders is a well known and studied phenomenon that appears in many engineering fields. A Reduced Order Model (ROM) of the incompressible flow aro…