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The Foundation of Domain Decomposition Technologies in Ansys HFSS

The third installment of the Electromagnetics Foundation Webinar Series is here! In this webinar, you will learn details about the several solver technologies incorporated into HFSS and how they are integrated to permit HFSS the ability to scale from micro to macro with exceptional accuracy in simulation.


April 12, 2022
11 AM EDT / 4 PM BST / 8:30 PM IST


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About this Webinar

There have been significant advances in HFSS over the last decade. Some of these new technologies such as general domain decomposition solver, hybrid finite element-boundary integral solver (FE-BI), hybrid integral equation region solver (IE region), and more recently 3D component array and mesh fusion solvers are all based on powerful domain decomposition method (DDM). DDM is a technique that allows HFSS to exploit high performance computing (HPC) capabilities to solve EM problems of unprecedented size and scope.  The basic idea of DDM is to decompose the original problem into several non-overlapping and possibly repetitive sub-domains. The continuity of electromagnetic fields at the interfaces between adjacent sub-domains is enforced through some suitable boundary conditions. By doing so, the most efficient solver or meshing technology can be employed in each domain.

What you will learn

  • Theoretical overview of domain decomposition formulations in HFSS
  • HFSS solver evolution in the past decade 
  • In-depth discussion in various DDM technologies available in HFSS including 3D component array, FE-BI/IE Region, and mesh fusion
  • How each technology compares with traditional approach in term of accuracy and computational requirements
  • HPC performance of each technology



Kezhong Zhao

Kezhong Zhao received B.S. (Summa Cum Laude), M.S. and Ph. D. degrees in electrical engineering from The Ohio State University, in 2001, 2003, and 2007, respectively. His research interests include all aspects of computational electromagnetics with emphasis on fast integral equation methods, hybrid FEM-BEM methods, hybrid numerical methods, and domain decomposition methods. During his graduated studies, he received several recognitions including 2nd prize in the student paper competition at the 2007 IEEE AP-S symposium and the best student paper at the 2006 international Zurich symposium on electromagnetic compatibility. He joined Ansoft corporation right after graduation in 2007 where he is currently a distinguished engineer leading the high frequency-signal integrity FEM solver team. He has made significant contribution to HFSS including domain decomposition solver, finite array and 3D component array solver, FE-BI and hybrid regions, and mesh fusion solver.