Green Computing Systems Research OrganizationWaseda University

Laboratory

Institute for Frontier Fluid-Structure Interaction Analysis

Research Themes

With unique computational analysis methods, we bring solution to a wide-range of real-world problems that no one else, or very few, in the world can solve.

Director

TAKIZAWA, Kenji

Researchers

Professor TAKIZAWA, Kenji
Professor TEZDUYAR, Tayfun E.
Professor SHIBATA, Yoshihiroi
Professor MIYAGAWA, Kazuyoshi
Professor KUSAKA, Jin
Assistant Professor OTOGURO, Yuto

Outline

With unique computational analysis methods, we bring solution to a wide-range of real-world problems that no one else, or very few, in the world can solve.

The classes of applications targeted include fluid machinery, ground vehicles, aerospace technologies, home appliances, and medical applications. Many of these applications involve fluid–structure interaction and we face multiphysics challenges.

As examples, we show here tire aerodynamics with actual geometry and road contact (Figure 1), spacecraft parachutes (Figure 2), and heart and aorta flow analysis (Figure 3).

Figure 1. Tire aerodynamics with actual geometry and road contact.

Figure 2. Orion spacecraft landing parachutes.

Figure 3. Heart and aorta flow analysis.

We first view the problem in a more general context and develop a sound understanding of its mathematical aspects. Then we innovate methods that expand our core computational technologies to the class of problems in that general context, address the computational challenges involved, and bring reliable solutions. In the last stage, we introduce the special methods needed to overcome the computational challenges specific to the individual problems we want to solve.

In most real-world problems, we face complex geometries, typically given as a computer-aided design (CAD) model represented with NURBS basis functions. That and the superior accuracy to be gained by representing the solution with NURBS basis functions make isogeometric discretization desirable also in the computational analysis. However, the complex geometries, and the likely presence of complex motion patterns and topology changes, such as contact between solid surfaces, make using isogeometric discretization quite challenging. We are innovating the methods that will overcome those challenges, and that will enable a wide-scope integration of the design, analysis and manufacturing.

The Team for Advanced Flow Simulation and Modeling (T*AFSM) focuses on computational engineering analysis that requires advanced flow simulation and modeling methods and innovates the required methods. The T*AFSM started in 1983 and since then innovated many powerful methods and brought analysis and solution in many classes of complex applications.

Contact

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