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Rensselaer Polytechnic InstituteからLucy Zhang先生をお迎えしてセミナーを開催致します．皆様のご参加をお待ち致しております． 講演者: Dr. Lucy T. Zhang (Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute) 講演題目: Towards accurate and efficient numerical algorithms for fluid-structure interactions 日時: 2013 年10 月11 日（金） 13:00～14:00 場所: M4-101 講義室 （http://www.mech.eng.osaka-u.ac.jp/access/） 備考: このセミナーは修士一年次生向けに開講予定の「マルチフィジックス解析展開」の一環ですが、連成解析にご関心をお持ちの多くの方のご参加を歓迎いたします。 連絡: 竹内伸太郎（shintaro.takeuchi@mech.eng.osaka-u.ac.jp） 要旨: Abstract: Fluid-structure interaction is a very commonly seen physical phenomenon in many engineering applications. Some examples include blood flow interacting with soft tissues, flags waving in the wind, morphing wings in Micro-Air Vehicles (MAV). To accurately capture the interactions between the two fields involve very intricate coupling process and advanced numerical solution techniques. In this talk, we will first discuss the general frameworks used to model fluid-structure interactions, i.e. boundary-fitted mesh and non-boundary-fitted mesh techniques. Then, we present the Immersed Finite Element Method (IFEM) that we have been developing and enhancing over the past decade to study complex fluid-structure interactions. This non-boundary-fitted mesh technique does not require mesh-updating or remeshing, and can easily couple any existing fluid and solid solvers. We will go in depth of the advancement made for this method in order to yield accurate and stable solutions for low and high Reynolds number flows, large deformations, and high density disparities. In the end, some validation cases and applications are presented to show the robustness of the approach.