セミナー発足に際してのごあいさつ(1997.4)

第 322 回 Q-NA セミナー
日     時2018 年 7 月 13 日 (金) 15:30 - 17:00
場     所九州大学伊都キャンパス ウェスト1号館 7階 W1-C-716室
講 演 者Omar Richardson (Karlstads Universitet)
題     目Two applications of multiscale flow models: approximation of a two-scale pressure model and a hybrid crowd dynamics simulation
概     要In this talk, we address two distinct but related topics:
First, we study the evolution of a gas-liquid mixture via a coupled system of elliptic-parabolic equations posed on two separated spatial scales. The model equations describe the interplay between macroscopic and microscopic pressures in an unsaturated heterogeneous medium with distributed microstructures. Besides ensuring the well-posedness of our two-scale model, we design two-scale convergent numerical approximations and prove a priori error estimates and propose an a posteriori error estimator, used to propose a macroscopic mesh refinement strategy to achieve an overall error reduction. This is a joint work with Martin Lind and Adrian Muntean (Karlstad University, Sweden)
Second, we study the evacuation dynamics of a crowd wanting to escape from a complex geometry in the presence of a fire as well as of a slowly spreading smoke curtain. The crowd we have in view is composed of two populations of individuals: one knowing the map of the building and one unaware of the given geometry, relying exclusively on potentially informed neighbors to identify a path of motion towards the exit. We demonstrate the hybrid crowd dynamics model with simulations and evacuation metrics. This is a joint work with Andrei Jalba (Eindhoven University of Technology, The Netherlands) and Adrian Muntean (Karlstad University, Sweden).

References:
1. O. M. Richardson, A. Jalba, and A. Muntean: Effects of environment knowledge in evacuation scenarios involving fire and smoke — a multiscale modelling and simulation approach, Fire Technology, 2018.
2. M. Lind, A. Muntean, and O. M. Richardson: Well-posedness and inverse Robin estimates for a multiscale elliptic/parabolic system, Applicable Analysis, 2018.
3. O. M. Richardson: Mathematical analysis and approximation of a multiscale elliptic-parabolic system, Licentiate thesis Karlstad university (to appear, 2018).
備     考通常と曜日・時間が異なりますのでご注意下さい.   マス・フォア・インダストリ研究所の移転に伴い, 会場が変更されていますのでご注意下さい.  お車でお越しの場合にはこの案内を印刷してご持参のうえ, 入構の際に守衛所にてご掲示ください.

世話人
田上 大助 (九州大学 マス・フォア・インダストリ研究所)
渡部 善隆 (九州大学 情報基盤研究開発センター)

ご不明な点がございましたら、事務局: までお問い合わせ下さい。


トップ   編集 凍結 差分 バックアップ 添付 複製 名前変更 リロード   新規 一覧 単語検索 最終更新
Last-modified: 2018-07-11 (水) 14:02:23 (34d)