research
Severo Ochoa Centre of Excellence (2019-2023) under the grant CEX2018-000797-S funded by MCIN/AEI/10.13039/501100011033 [+]
fpi-so phd students
Azizpooryan, Mohammad
FPI-Severo Ochoa PhD Student
Position: PhD in Structural Analysis (Kratos Multiphysics)
Director: Riccardo Rossi
Related grant: Grants for pre-doctoral contracts for the training of doctors 2021
Research line: Constitutive Modelling represents one of the cornerstones of computational mechanics. Over the years many different proposals were made to improve material models so that complex materials such for example the masonry can be modelled correctly. This included in particular the use of Multiscale “FE2” models as well as of Data Driven models based on Machine Learning (ML) approaches. The goal of the work is to conjugate the group expertise in the field of constitutive modelling and of experimental measurements so to combine ML models and experimental observations in further improving state of the art models.
Research interests: Computational mechanics | Machine learning | Data driven | Constitutive material modeling | Meshfree methods
Blanco, Pau
FPI-Severo Ochoa PhD Student
Position: PhD in Applied Mathematics (Soft and Living Material Interfaces)
Director: Marino Arroyo
Related grant: Grants for pre-doctoral contracts for the training of doctors 2020
Research line: During the last years, thanks to the characterization and mechanical manipulation as well as mathematical models and numerical, it has been established that essential aspects of tissue biology can be explained in based on physical principles, seeing tissues as living and active materials that interact with other materials fibrous in connective tissues (extracellular matrix). An example of great relevance is the progression and invasion of cancerous tissues, a process in which the mechanical aspects of the cells and the matrix are essential. Other example are epithelial tissues, where monolayers of cells interact with a matrix to form selective and dynamic barriers. In the case of the intestinal epithelium, this monolayer is capable of being renewed completely every few days maintaining a spatial segregation of cell types and a morphology adapted to its function.
Casallas, Karen
FPI-Severo Ochoa PhD Student
Position: PhD in Structural Mechanics
Director: Eugenio Oñate
Related grant: Grants for pre-doctoral contracts for the training of doctors 2020
Title of PhD thesis: Finite element methods for solid-pore fluid coupled problems in multi-fractured porous media
Research line: In this thesis, we will start from the fluid flow through porous media formulation already implemented in Kratos Multiphysics, which was designed for fully saturated conditions, and will extend it to a multi-component formulation in which more than one fluid can fill the pores of the solid skeleton.
Furthermore, we will model discontinuities in the porous media by means of both standard finite elements (FEM) with the so-called "smeared crack" models, and also "quasi-zero-thickness" interface elements, which explicitly represent discontinuities, with "discrete crack" models. We will design a multi-scale approach to relate such discrete crack models with the continuum ones, in order to efficiently simulate large-scale problems using the information of the accurate small scale models.
Short CV
Dolz, Maria Montserrat
FPI-Severo Ochoa PhD Student
Position: PhD in Composites and Advanced Materials for Multifunctional Structures
Director: Xavier Martínez
Related grant: Grants for pre-doctoral contracts for the training of doctors 2020
Research line: The doctoral student will join the group Composites and Advanced Materials for Multifunctional Structures (CAMMS) of CIMNE. The group has a long experience in the development of numerical models with those that simulate composite materials, and advanced materials, for the subsequent analysis of structures of engineering.
In recent years the group has been applying many of the developments in the simulation of naval structures, in its participation in the European project FIBRESHIP. This project has a certain continuity in the FIBRE4YARDS project which coordinates CIMNE. Part of the developments that the group has to make in the project is to develop a model constitutive with which to characterize the behavior of materials manufactured using Additive Manufacturing and applied to naval structures. The student's job will be to help carry out these models and in applying them to the analysis of structures.
Farshbaf, Sima
FPI-Severo Ochoa PhD Student
Position: PhD in Civil Engineering (Industrial Manufacturing Processes)
Director: Michele Chiumenti
Related grant: Grants for pre-doctoral contracts for the training of doctors 2021
Research line: Design and implement modeling component based on in-fill, lattice and auxetic structures. To develop, implement and validate a nonlinear multiscale model for AM structures. In-fill structures it will use computational homogenization via RVE. Lattice structures will also require Multiscale Reduced Order Modeling. Moreover, development, implementation and validation of the developed computational framework in application to real life demonstrators are foreseen.
Narváez, Christian
FPI-Severo Ochoa PhD Student
Position: PhD in Aeronautics
Director: Jordi Pons-Prats
Related grant: Grants for pre-doctoral contracts for the training of doctors 2020
Research line: The doctoral student will join the KRATOS group at CIMNE. The work team has a long experience in the development of numerical models applied in CFD. In recent years the team has developed several novel implementations in CFD, allowing to have an active international participation. This project has a certain continuity with the works already developed in KRATOS. The main novelty is to develop a computational model, based on the enriched finite element / level set model, with which it is possible to predict the behavior of fluids exposed to an electric field in 3D simulations. The work of the student will consist of helping to make these developments.
Perelló, Rafel
FPI-Severo Ochoa PhD Student
Position: PhD in Innovative Algorithms for Fast Accurate Computing
Director: Antonio Huerta
Related grant: Grants for pre-doctoral contracts for the training of doctors 2019
Sal, Gastón
FPI-Severo Ochoa PhD Student
Position: PhD in Computational Design & Analysis of Engineering Metamaterials
Director: Xavier Oliver
Related grant: Grants for pre-doctoral contracts for the training of doctors 2019
Sayad, Babak
FPI-Severo Ochoa PhD Student
Position: PhD in Geomechanics
Director: Antonio Gens
Related grant: Grants for pre-doctoral contracts for the training of doctors 2020
Research line: The storage of nuclear waste within geological formations is a current and responsible option in many countries that use nuclear-electric energy, for the long-term confinement of spent nuclear fuel. In a deposit of radioactive waste housed in a clay formation, hydrogen and other gases can be generated due to corrosion of metallic materials under anoxic conditions, radioactive decay of waste, and radiolysis of water. If the rate of gas production exceeds the rate of gas diffusion within the pores of the clay, a discrete gas phase will form and accumulate until its pressure is large enough to exceed the inlet pressure of the material environment, at which point a dilating and advective gas flow is expected to occur.
The purpose of this research proposal is to better represent numerically the processes that govern advective gas movement both in low permeability clay rocks and engineering barriers based on clay materials. In this work, special attention will be paid to the mechanisms that control the opening, flow, and closure of fractures / cracks (flow paths/paths) that occur locally in the clay, and their impact on the performance of the designed clay barrier, both on a particular/local scale and on a general scale of the construction solution.