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USACM CFD/FSI Virtual Seminar
Friday, June 17, 2022, 4:00 PM - 5:00 PM CDT
Category: Events

USACM CFD/FSI Virtual Seminar

Space–Time Isogeometric Analysis of Heart Valves

Prof. Kenji Takizawa

Professor, Department of Modern Mechanical Engineering
Faculty of Science and Engineering, Waseda University

Abstract

With the Space–Time Isogeometric Analysis (ST-IGA), the Team for Advanced Flow Simulation and Modeling (TAFSM) has been bringing solution to a wide-range of real-world problems with formidable computational challenges. The flow analysis of the heart valve is one of them. In this presentation, the ST-IGA key technology is overviewed. (i) A general-purpose NURBS mesh generation method for IGA in fluid mechanics with complex geometries. (ii) ST Slip Interface method, which helps the mesh generation and its motion. (iii) Mesh relaxation and mesh moving based on fiber-reinforced hyperelasticity and optimized zero-stress state, which can improve the mesh orthogonality of the parametric directions. (iv) ST Topology Change (ST-TC), which is a core technology to handle the actual contact between the valve leaflets without giving up the high-resolution boundary layer representation. (v) Constrained-Flow-Profile (CFP) Traction, which stabilizes the inflow velocity when the flow is driven by the pressure difference. The presentation will include a discussion of the heart valve computation performed. This is a joint work with Tayfun Tezduyar, Rice University.

Biography

Takizawa obtained his PhD from Tokyo Institute of Technology in 2005. He received the IACM Young Investigator Award, ASME Thomas J.R. Hughes Young Investigator Award, JSME Computational Mechanics Achievement Award, JACM Computational Mechanics Award, and Japan Society for the Promotion of Science Prize. He is a member of the ASME Applied Mechanics Division Executive Committee.

 

Sponsored by USACM Technical Thrust Area on Computational Fluid Dynamics/Fluid Structure Interaction.
Contact for information about the seminar: [email protected]

 

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