Welcome to Ye Ji’s website.欢迎来到纪野的主页

Ye Ji is a Postdoctoral Researcher 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). Working at the interface of computer-aided design (CAD) and computer-aided engineering (CAE), he develops isogeometric analysis (IGA) methods that turn a CAD model into a discretization that is geometrically exact, mathematically well-posed, and fast to solve. The core of his research is analysis-suitable spline parameterization and mesh generation — optimization- and PDE-based constructions of injective, high-quality parameterizations and boundary parameter matching — together with fast and robust solvers based on preconditioned Anderson acceleration.

These methods have moved from theory into practice. Ye leads the development of SplineMesh, spline-based structured mesh generation for twin-screw machines that feeds the deforming-geometry CFD workflow of the commercial SCORG™ toolchain. His recent work extends IGA to semi-analytical thermal simulation of laser powder bed fusion (LPBF), an isogeometric lattice Boltzmann method (IGA-LBM) for flows on CAD-exact geometries, and a parameterization-driven arbitrary Lagrangian–Eulerian (ALE) method for large-deformation fluid–structure interaction. He is a co-developer of the open-source C++ library Geometry + Simulation Modules (G+Smo) and a reviewer for Mathematical Reviews.

I am happy to discuss collaborations on spline parameterization, mesh generation, and isogeometric methods for engineering applications — feel free to reach out by email.

News

• [10/2026]: Our group presents four talks at IGA 2026 (14th International Conference on Isogeometric Analysis), Waseda University, Tokyo, Japan, October 11–14, 2026. See you in Tokyo!
  • “A fast semi-analytical isogeometric framework for thermal problems with moving heat sources” — presented by me (Mon, Oct 12, MS 04).
  • “Fast r-refinement in isogeometric analysis using low-rank approximations” — presented by Angelos Mantzaflaris (Mon, Oct 12, MS 04).
  • “Parameterization-driven isogeometric ALE for fluid–structure interaction under large deformations” — presented by Jingya Li (Tue, Oct 13, MS 03).
  • “A body-fitted isogeometric lattice Boltzmann method for complex geometries” — presented by Monica Lacatus (Tue, Oct 13, MS 03).

• [09/2026]: Our paper Parameterization-driven arbitrary Lagrangian–Eulerian method for large-deformation isogeometric fluid–structure interaction has been published in Computer Methods in Applied Mechanics and Engineering; it recasts mesh motion as a sequence of domain parameterization problems, enabling long-running large-rotation simulations. Congratulations to Jingya, and many thanks to Hugo, Henk and Matthias!

• [09/2026]: I presented “SplineMesh v3.0: Robust spline-based structured mesh generation for positive-displacement rotary machines with sharp features” at ICSM 2026 (International Conference on Screw Machines), Dortmund, Germany, September 8–10, 2026. The new version adds automatic fold detection and corner-preserving local untangling, enabling robust meshing of the full working cycle of twin-screw dry vacuum pumps. Many thanks to Matthias, Dr. Sham Rane and Prof. Ahmed Kovačević!

• [07/2026]: I gave an invited talk, “CAD-CAE Integration: From Theory and Algorithms to Engineering Practice”, at CSIAM GDC 2026 (18th CSIAM Conference on Geometric Design and Computing), Hohhot, China. Our paper on B-spline-based receding-horizon trajectory optimization for UAV obstacle avoidance received the Conference Best Paper Award, and our poster Extended r-adaptive isogeometric analysis for weak-discontinuous problems the Conference Best Poster Award.

• [07/2026]: I presented “An isogeometric formulation of the lattice Boltzmann method on CAD-exact geometries” at WCCM-ECCOMAS 2026 (17th World Congress on Computational Mechanics & 10th ECCOMAS Congress), Munich, Germany. Many thanks to Monica and Matthias!

• [07/2026]: Jingyi presented our paper Extended r-adaptive isogeometric analysis for weak-discontinuous problems at SPM/SMI 2026 (Symposium on Solid and Physical Modeling & Shape Modeling International), Istanbul, Türkiye. Many thanks to Jingyi, Chungang and Matthias! → Talk

• [05/2026]: Our paper Extended r-adaptive isogeometric analysis for weak-discontinuous problems has been published in Computer-Aided Design.

• [05/2026]: I presented the poster Efficient Thermal Simulation in Metal Additive Manufacturing via Semi-Analytical Isogeometric Analysis at HOFEIM 2026, Siena, Italy: a semi-analytical IGA framework for LPBF thermal simulation with up to 258× speed-up over conventional FEM. → Talk