Waseda University · Engineering
Professor Tayfun E. Tezduyar's research lab, the Team for Advanced Flow Simulation and Modeling (T★AFSM), specializes in advanced computational fluid dynamics and fluid-structure interaction (FSI) methods. The lab focuses on developing and applying space-time finite element formulations—particularly the Deforming-Spatial-Domain/Stabilized Space-Time (DSD/SST) method—for simulating complex, unsteady flows with moving boundaries, interfaces, and dynamic interactions. Their work spans challenging applications such as parachute dynamics, arterial hemodynamics, and flows with moving mechanical components, often leveraging massively parallel computing for high-fidelity simulations. The lab emphasizes stabilization techniques, mesh moving strategies, and efficient iterative solvers to ensure accuracy, robustness, and scalability.
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Abstract The interface‐tracking and interface‐capturing techniques we developed in recent years for computation of flow problems with moving boundaries and interfaces rely on stabilized formulations such as the streamline‐upwind/Petrov–Galerkin (SUPG) and pressure‐stabilizing/Petrov–Galerkin (PSPG) methods. The interface‐tracking techniques are based on the deforming‐spatial‐domain/stabilized space–time formulation, where the mesh moves to track the interface. The interface‐capturing techniques,
Abstract The space–time fluid–structure interaction (FSI) techniques developed by the Team for Advanced Flow Simulation and Modeling (T★AFSM) have been applied to a wide range of 3D computation of FSI problems, some as early as in 1994 and many with challenging complexities. In this paper, we review these space–time FSI techniques and describe the enhancements introduced recently by the T★AFSM to increase the scope, accuracy, robustness and efficiency of these techniques. The aspects of the FSI
The authors describe their work on the massively parallel finite-element computation of compressible and incompressible flows with the CM-200 and CM-5 Connection Machines. Their computations are based on implicit methods, and their parallel implementations are based on the assumption that the mesh is unstructured. Computations for flow problems involving moving boundaries and interfaces are achieved by using the deformable-spatial-domain/stabilized-space-time method. Using special mesh update sc
We discuss the stabilized finite element computation of unsteady incompressible flows, with emphasis on the space-time formulations, iterative solution techniques and implementations on the massively parallel architectures such as the Connection Machines. The stabilization technique employed in this paper is the Galerkin/least-squares (GLS) method. The Deformable-Spatial-Domain/Stabilized-Space-Time (DSD/SST) formulation was developed for computation of unsteady viscous incompressible flows whic
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