Alexander Heinlein

prof_pic5.jpg

TU Delft

DIAM, Faculty of EEMCS

Numerical Analysis

Mekelweg 4, 2628 CD Delft

Room HB 03.290

Tel.: +31 (0)15 27 89135

Alexander Heinlein is assistant professor in the Numerical Analysis group of the Delft Institute of Applied Mathematics (DIAM), Faculty of Electrical Engineering, Mathematics & Computer Science (EEMCS), at the Delft University of Technology (TU Delft).

His main research areas are numerical methods for partial differential equations and scientific computing, in particular, solvers and discretizations based on domain decomposition and multiscale approaches. He is interested in high-performance computing (HPC) and solving challenging problems involving, e.g., complex geometries, highly heterogeneous coefficient functions, or the coupling of multiple physics. More recently, Alexander also started focusing on the combination of scientific computing and machine learning, a new research area also known as scientific machine learning (SciML). Generally, his work includes the development of new methods and their theoretical foundation as well as their implementation on current computer architectures (CPUs, GPUs) and application to real world problems.

news

Sep 19, 2025 Our workshop on “Benchmarking for Scientific Machine Learning in Subsurface Geoscience” at the Lorentz Center in Leiden has been approved. The event is co-organized with Inga Berre, Hadi Hajibeygi, Julia Pelzer, and Miriam Schulte. It will take place from April 20 to 24, 2026. Further details will be announced soon.
Sep 1, 2025 With the start of the new academic year, we are happy that previous year’s master students successfully graduated and new bachelor and master students have joined our group; see master thesis projects and bachelor thesis projects for more details.
Dec 20, 2024 Today, Yuhuang Meng has joined our group as a PhD candidate. He will work on machine learning-enhanced numerical solvers and is co-supervised by Jing Zhao.

recent publications

  1. CAMWA
    High-order discretized ACMS method for the simulation of finite-size two-dimensional photonic crystals
    Elena GiammatteoAlexander Heinlein, Philip L. Lederer, and 1 more author
    Computers & Mathematics with Applications, 2025
  2. ACM TOMS
    Coupling deal.II and FROSch: A Sustainable and Accessible (O)RAS Preconditioner
    Alexander Heinlein, Sebastian Kinnewig, and Thomas Wick
    ACM Trans. Math. Softw., Sep 2025
  3. Springer LNCSE
    Nonlinear Two-Level Schwarz Methods: A Parallel Implementation in FROSch
    Alexander Heinlein, Kyrill Ho, Axel Klawonn, and 1 more author
    Jul 2025
    Accepted for publication in the proceedings of the 28th International Conference on Domain Decomposition Methods (DD28)
  4. Springer LNCSE
    Coarse Spaces Based on Higher-Order Interpolation for Schwarz Preconditioners for Helmholtz Problems
    Erik Sieburgh, Alexander Heinlein, Vandana Dwarka, and 1 more author
    Jul 2025
    Accepted for publication in the proceedings of the 28th International Conference on Domain Decomposition Methods (DD28)
  5. Springer LNCSE
    Domain decomposition method with randomized neural networks
    Yong Shang, Alexander HeinleinSiddhartha Mishra, and 1 more author
    Jul 2025
    Accepted for publication in the proceedings of the 28th International Conference on Domain Decomposition Methods (DD28)
  6. Monolithic and Block Overlapping Schwarz Preconditioners for the Incompressible Navier–Stokes Equations
    Alexander HeinleinAxel KlawonnJascha Knepper, and 1 more author
    Jun 2025
  7. Few-Shot Learning by Explicit Physics Integration: An Application to Groundwater Heat Transport
    Julia Pelzer, Corné Verburg, Alexander Heinlein, and 1 more author
    May 2025
    Submitted
  8. PACMANN: Point Adaptive Collocation Method for Artificial Neural Networks
    Coen Visser, Alexander Heinlein, and Bianca Giovanardi
    Sep 2025
    Submitted
  9. Finite basis Kolmogorov-Arnold networks: domain decomposition for data-driven and physics-informed problems
    Amanda A. Howard, Bruno Jacob, Sarah H. Murphy, and 2 more authors
    Sep 2025