Announcement Detail

Tuesday, May 19, 2026

12:00 PM CDT

Join via Zoom: https://us06web.zoom.us/j/82464478256?pwd=ZMkJVFdjMJzadgnVWFPqsdUSs4qTaY.1

Student Chapter Seminar Series

From Geometry to Physics without Boundary-Fitted Meshing: Multiphysics Simulation on Complex Domains

Speaker

Cheng-Hau Yang, Argonne National Laboratory

Abstract:

Mesh generation remains a bottleneck in engineering workflows, especially in the AI era, where large amounts of data are required to learn the underlying physics. Generating meshes for complex geometries, such as reactor components or specialized vehicle shapes, is a time-consuming process, which prevents fully automated AI training and simulation workflows. In some cases, users may also have specific requirements on the mesh type -- such as quadrilateral or hexahedral elements -- which makes boundary- (or interface-) fitted meshes even more difficult to construct.

In this talk, I will cover our efforts to improve non-boundary- or non-interface-fitted mesh approaches, specifically the Shifted Boundary Method (SBM) and the Shifted Interface Method (SIM). I will introduce our work on making SBM/SIM more accurate, efficient, and broadly applicable. A key application we will highlight is the extension of SBM/SIM to model interface mechanics in the context of solid mechanics and crystal plasticity.

Bio:

Dr. Cheng-Hau Yang is a postdoctoral researcher at Argonne National Laboratory. Prior to joining Argonne, he earned his Ph.D. from Iowa State University. His research focuses on computational methods for complex multiphysics problems, with particular emphasis on unfitted finite element frameworks, especially the Shifted Boundary Method. His work develops robust and scalable formulations for large-scale parallel simulations, particularly within finite element frameworks such as MOOSE. He is a recipient of the 36th Robert J. Melosh Medal, a prestigious student award in finite element methods.