Santiago Badia

Santiago Badia

Professor of Computational Mathematics

Monash University

I am Professor of Computational Mathematics at Monash University (Melbourne, Australia). Previously, I served as a Professor at UPC (Barcelona, 2009–2019) and as a researcher at Sandia National Labs (Albuquerque, 2007–2008) and Politecnico di Milano (2006).

My research is about the design and analysis of numerical discretisations of partial differential equations. I have designed and analysed finite element methods (in a broad sense) for singularly perturbed regimes, indefinite systems, multiphysics, and multiscale problems. I have also contributed to stabilized and unfitted finite element methods, large-scale parallel domain decomposition and multigrid solvers, and coupling techniques. More recently, I have been exploring the power of neural networks for the approximation of forward and inverse problems governed by PDEs. Overall, I have authored over 100 publications in these areas.

I have led several open-source scientific software projects, including the most recent Gridap project.


Submitted

Accepted for publication

Analysis of BDDC preconditioners for non-conforming polytopal hybrid discretisation methods
Santiago Badia, Jérôme Droniou, Jordi Manyer, Jai Tushar
SIAM Journal on Numerical Analysis, 2025

2026

Reduced basis solvers for unfitted methods on parameterized domains
Nicholas Mueller, Santiago Badia, Yiran Zhao
Computer Methods in Applied Mechanics and Engineering, 2026
GridapROMs.jl: Efficient reduced order modelling in the Julia programming language
Nicholas Mueller, Santiago Badia
Computer Physics Communications, 2026
A tensor-train reduced basis solver for parameterized partial differential equations on Cartesian grids
Nicholas Mueller, Yiran Zhao, Santiago Badia, Tiangang Cui
Journal of Computational and Applied Mathematics, 2026
Unfitted finite element interpolated neural networks
Wei Li, Alberto F. Martín, Santiago Badia
Journal of Computational Physics, 2026

2025

Energy and entropy conserving compatible finite elements with upwinding for the thermal shallow water equations
Tamara A. Tambyah, David Lee, Santiago Badia
Journal of Computational Physics, 2025
Compatible finite element interpolated neural networks
Santiago Badia, Wei Li, Alberto F. Martín
Computer Methods in Applied Mechanics and Engineering, 2025
STLCutters.jl: A scalable geometrical framework library for unfitted finite element discretisations
Pere A. Martorell, Santiago Badia
Computer Physics Communications, 2025
GridapTopOpt.jl: a scalable Julia toolbox for level set-based topology optimisation
Zachary J. Wegert, Jordi Manyer, Connor N. Mallon, Santiago Badia, Vivien J. Challis
Structural and Multidisciplinary Optimization, 2025
Neural Level Set Topology Optimization Using Unfitted Finite Elements
Connor N. Mallon, Aaron W. Thornton, Matthew R. Hill, Santiago Badia
International Journal for Numerical Methods in Engineering, 2025
A velocity-vorticity-pressure formulation for the steady Navier–Stokes–Brinkman–Forchheimer problem
Santiago Badia, Carsten Carstensen, Alberto F. Martín, Ricardo Ruiz-Baier, Segundo Villa-Fuentes
Computer Methods in Applied Mechanics and Engineering, 2025
Level-set topology optimisation with unfitted finite elements and automatic shape differentiation
Zachary J. Wegert, Jordi Manyer, Connor N. Mallon, Santiago Badia, Vivien J. Challis
Computer Methods in Applied Mechanics and Engineering, 2025
A discrete trace theory for non-conforming polytopal hybrid discretisation methods
Santiago Badia, Jérôme Droniou, Jai Tushar
Foundations of Computational Mathematics, 2025

2024

Adaptive Finite Element Interpolated Neural Networks
Santiago Badia, Wei Li, Alberto F. Martín
Computer Methods in Applied Mechanics and Engineering, 2024
Space–time unfitted finite elements on moving explicit geometry representations
Santiago Badia, Pere A. Martorell, Francesc Verdugo
Computer Methods in Applied Mechanics and Engineering, 2024
Adaptive quadratures for nonlinear approximation of low-dimensional PDEs using smooth neural networks
Alexandre Magueresse, Santiago Badia
Computers & Mathematics with Applications, 2024
High order unfitted finite element discretizations for explicit boundary representations
Pere A. Martorell, Santiago Badia
Journal of Computational Physics, 2024
Model order reduction with novel discrete empirical interpolation methods in space–time
Nicholas Mueller, Santiago Badia
Journal of Computational and Applied Mathematics, 2024
Finite element interpolated neural networks for solving forward and inverse problems
Santiago Badia, Wei Li, Alberto F. Martín
Computer Methods in Applied Mechanics and Engineering, 2024
Efficient and reliable divergence-conforming methods for an elasticity-poroelasticity interface problem
Santiago Badia, Martin Hornkjøl, Arbaz Khan, Kent-André Mardal, Alberto F. Martín, Ricardo Ruiz-Baier
Computers & Mathematics with Applications, 2024
A comparison of variational upwinding schemes for geophysical fluids, and their application to potential enstrophy conserving discretisations
David Lee, Alberto F. Martín, Christopher Bladwell, Santiago Badia
Computers & Mathematics with Applications, 2024
GridapSolvers.jl: Scalable multiphysics finite element solvers in Julia
Jordi Manyer, Alberto F. Martín, Santiago Badia
Journal of Open Source Software, 2024
Accuracy and scalability of incompressible inductionless MHD codes applied to fusion technologies
Fernando R Urgorri, Guillermo G Fonfría, Francesc Verdugo, Javier Príncipe, Santiago Badia
Plasma Physics and Controlled Fusion, 2024

2023

Bound-preserving finite element approximations of the Keller-Segel equations
Santiago Badia, Jesús Bonilla, Juan Vicente Gutiérrez-Santacreu
Mathematical Models and Methods in Applied Sciences, 2023
Space-time unfitted finite element methods for time-dependent problems on moving domains
Santiago Badia, Hridya Dilip, Francesc Verdugo
Computers &, 2023
Stability and Conditioning of Immersed Finite Element Methods: Analysis and Remedies
Frits de Prenter, Clemens Verhoosel, Harald van Brummelen, Mats Larson, Santiago Badia
Archives of Computational Methods in Engineering, 2023
A massively parallel implementation of multilevel Monte Carlo for finite element models
Santiago Badia, Jerrad Hampton, Javier Príncipe
Mathematics and Computers in Simulation, 2023

2022

Conditioning of a Hybrid High-Order Scheme on Meshes with Small Faces
Santiago Badia, Jérôme Droniou, Liam Yemm
Journal of Scientific Computing, 2022
Linking ghost penalty and aggregated unfitted methods
Santiago Badia, Eric Neiva, Francesc Verdugo
Computer Methods in Applied Mechanics and Engineering, 2022
Geometrical discretisations for unfitted finite elements on explicit boundary representations
Santiago Badia, Pere A. Martorell, Francesc Verdugo
Journal of Computational Physics, 2022
The software design of Gridap: A Finite Element package based on the Julia JIT compiler
Francesc Verdugo, Santiago Badia
Computer Physics Communications, 2022
Robust high-order unfitted finite elements by interpolation-based discrete extension
Santiago Badia, Eric Neiva, Francesc Verdugo
Computers &, 2022
GridapDistributed: a massively parallel finite element toolbox in Julia
Santiago Badia, Alberto F. Martín, Francesc Verdugo
Journal of Open Source Software, 2022

2021

EMBEDDED MULTILEVEL MONTE CARLO FOR UNCERTAINTY QUANTIFICATION IN RANDOM DOMAINS
Santiago Badia, Jerrad Hampton, Javier Príncipe
International Journal for Uncertainty Quantification, 2021
The Aggregated Unfitted Finite Element Method on Parallel Tree-Based Adaptive Meshes
Santiago Badia, Alberto F. Martín, Eric Neiva, Francesc Verdugo
SIAM Journal on Scientific Computing, 2021
Robust and scalable h-adaptive aggregated unfitted finite elements for interface elliptic problems
Eric Neiva, Santiago Badia
Computer Methods in Applied Mechanics and Engineering, 2021
A robust and scalable unfitted adaptive finite element framework for nonlinear solid mechanics
Santiago Badia, Manuel A. Caicedo, Alberto F. Martín, Javier Príncipe
Computer Methods in Applied Mechanics and Engineering, 2021

2020

Gridap: An extensible Finite Element toolbox in Julia
Santiago Badia, Francesc Verdugo
Journal of Open Source Software, 2020
A tutorial-driven introduction to the parallel finite element library FEMPAR v1.0.0
Santiago Badia, Alberto F. Martín
Computer Physics Communications, 2020
Monotonicity-preserving finite element schemes with adaptive mesh refinement for hyperbolic problems
Jesús Bonilla, Santiago Badia
Journal of Computational Physics, 2020
On differentiable local bounds preserving stabilization for Euler equations
Santiago Badia, Jesús Bonilla, Sibusiso Mabuza, John N. Shadid
Computer Methods in Applied Mechanics and Engineering, 2020
Numerical modelling of heat transfer and experimental validation in powder-bed fusion with the virtual domain approximation
Eric Neiva, Michele Chiumenti, Miguel Cervera, Emilio Salsi, Gabriele Piscopo, Santiago Badia, Alberto F. Martín, Zhuoer Chen, Caroline Lee, Christopher Davies
Finite Elements in Analysis and Design, 2020
A Generic Finite Element Framework on Parallel Tree-Based Adaptive Meshes
Santiago Badia, Alberto F. Martín, Eric Neiva, Francesc Verdugo
SIAM Journal on Scientific Computing, 2020

2019

Santiago Badia, Alberto F. Martín, Hieu Nguyen
Applied Mathematics Letters, 2019
Marc Olm, Santiago Badia, Alberto F. Martín
Computer Physics Communications, 2019
Santiago Badia, Alberto F. Martín, Marc Olm
Finite Elements in Analysis and Design, 2019
Jesús Bonilla, Santiago Badia
Computer Methods in Applied Mechanics and Engineering, 2019
Marc Olm, Santiago Badia, Alberto F. Martín
Advances in Engineering Software, 2019
Francesc Verdugo, Alberto F. Martín, Santiago Badia
Computer Methods in Applied Mechanics and Engineering, 2019
Eric Neiva, Santiago Badia, Alberto F. Martín, Michele Chiumenti
International Journal for Numerical Methods in Engineering, 2019

2018

Santiago Badia, Francesc Verdugo, Alberto F. Martín
Computer Methods in Applied Mechanics and Engineering, 2018
Santiago Badia, Marc Olm
Journal of Computational and Applied Mathematics, 2018
Santiago Badia, Alberto F. Martín, Hieu Nguyen
Journal of Scientific Computing, 2018
Santiago Badia, Francesc Verdugo
Journal of Computational and Applied Mathematics, 2018
Victor Calo, Santiago Badia, Javier Príncipe
Journal of Computational and Applied Mathematics, 2018
Santiago Badia, Alberto F. Martín, Francesc Verdugo
SIAM Journal on Scientific Computing, 2018

2017

Michele Chiumenti, Eric Neiva, Emilio Salsi, Miguel Cervera, Santiago Badia, Joan Moya, Zhuoer Chen, Caroline Lee, Christopher Davies
Additive Manufacturing, 2017
Santiago Badia, Alberto F. Martín, Javier Príncipe
Archives of Computational Methods in Engineering, 2017
Santiago Badia, Jesús Bonilla
Computer Methods in Applied Mechanics and Engineering, 2017
Santiago Badia, Marc Olm
SIAM Journal on Scientific Computing, 2017
Santiago Badia, Jesús Bonilla, Alba Hierro
Computer Methods in Applied Mechanics and Engineering, 2017

2016

Liang Yang, Santiago Badia, Ramon Codina
Computational Mechanics, 2016
Alba Hierro, Santiago Badia, Pavel Kus
Computer Methods in Applied Mechanics and Engineering, 2016
Oriol Colomés, Santiago Badia, Javier Príncipe
Computer Methods in Applied Mechanics and Engineering, 2016
Santiago Badia, Hieu Nguyen
SIAM Journal on Numerical Analysis, 2016
Santiago Badia, Alberto F. Martín, Javier Príncipe
SIAM Journal on Scientific Computing, 2016

2015

Oriol Colomés, Santiago Badia
International Journal for Numerical Methods in Engineering, 2015
S. Smolentsev, S. Badia, R. Bhattacharyay, L. Bühler, L. Chen, Q. Huang, H.-G. Jin, D. Krasnov, D.-W. Lee, E. Mas de les Valls, C. Mistrangelo, R. Munipalli, M.-J. Ni, D. Pashkevich, A. Patel, G. Pulugundla, P. Satyamurthy, A. Snegirev, V. Sviridov, P. Swain, T. Zhou, O. Zikanov
Fusion Engineering and Design, 2015
Santiago Badia, Alberto F. Martín, Javier Príncipe
Parallel Computing, 2015
Hector Espinoza, Ramon Codina, Santiago Badia
Computer Methods in Applied Mechanics and Engineering, 2015
Oriol Colomés, Santiago Badia, Ramon Codina, Javier Príncipe
Computer Methods in Applied Mechanics and Engineering, 2015
Santiago Badia, Alba Hierro
Computer Methods in Applied Mechanics and Engineering, 2015

2014

Hector Espinoza, Ramon Codina, Santiago Badia
Computer Methods in Applied Mechanics and Engineering, 2014
Santiago Badia, Ramon Codina, Ramon Planas
Archives of Computational Methods in Engineering, 2014
Santiago Badia, Alberto F. Martín, Javier Príncipe
SIAM, 2014
Santiago Badia, Alberto F. Martín, Ramon Planas
Journal of Computational Physics, 2014

2013

Ramon Codina, Santiago Badia
Computer Methods in Applied Mechanics and Engineering, 2013
Santiago Badia, Alberto F. Martín, Javier Príncipe
International Journal for Numerical Methods in Engineering, 2013
Santiago Badia, Alberto F. Martín, Javier Príncipe
Archives of Computational Methods in Engineering, 2013
Santiago Badia, Ramon Codina, Ramon Planas
Journal of Computational Physics, 2013

2012

2011

Santiago Badia, Ramon Codina
Applied Mathematics and Computation, 2011
Ramon Planas, Santiago Badia, Ramon Codina
Journal of Computational Physics, 2011
S. Badia, F. Guillén-González, J. V. Gutiérrez-Santacreu
Archives of Computational Methods in Engineering, 2011
Santiago Badia, Francisco Guillén-González, Juan Vicente Gutiérrez-Santacreu
Journal of Computational Physics, 2011

2010

Santiago Badia, Ramon Codina
Computer Methods in Applied Mechanics and Engineering, 2010

2009

Santiago Badia, Fabio Nobile, Christian Vergara
Computer Methods in Applied Mechanics and Engineering, 2009
Santiago Badia, Ramon Codina
SIAM Journal on Numerical Analysis, 2009
Santiago Badia, Annalisa Quaini, Alfio Quarteroni
Journal of Computational Physics, 2009

2008

S. Badia, R. Codina
Archives of Computational Methods in Engineering, 2008
Santiago Badia, Annalisa Quaini, Alfio Quarteroni
Computer Methods in Applied Mechanics and Engineering, 2008
Santiago Badia, Ramon Codina
International Journal for Numerical Methods in Fluids, 2008
Santiago Badia, Michael Parks, Pavel Bochev, Max Gunzburger, Richard Lehoucq
Multiscale Modeling & Simulation, 2008
Santiago Badia, Annalisa Quaini, Alfio Quarteroni
SIAM, 2008
Santiago Badia, Fabio Nobile, Christian Vergara
Journal of Computational Physics, 2008

2007

Ramon Codina, Javier Príncipe, Oriol Guasch, Santiago Badia
Computer Methods in Applied Mechanics and Engineering, 2007
Jacob Fish, Mohan A. Nuggehally, Mark S. Shephard, Catalin R. Picu, Santiago Badia, Michael L. Parks, Max Gunzburger
Computer Methods in Applied Mechanics and Engineering, 2007
Santiago Badia, Ramon Codina
International Journal for Numerical Methods in Engineering, 2007
S. Badia, P. Bochev, R. Lehoucq, M. L. Parks, Jacob Fish, Mohan A. Nuggehally, M. Gunzburger
International Journal for Multiscale Computational Engineering, 2007

2006