数値解析セミナー

過去の記録 ~02/05次回の予定今後の予定 02/06~

開催情報 火曜日 16:30~18:00 数理科学研究科棟(駒場) 056号室
担当者 齊藤宣一
セミナーURL http://www.infsup.jp/utnas/

2012年12月04日(火)

16:30-18:00   数理科学研究科棟(駒場) 002号室
本セミナーは、グローバルCOE事業「数学新展開の研究教育拠点」(東京大学)の援助を受け、GCOEセミナーして行われています。
https://www.ms.u-tokyo.ac.jp/gcoe/index.html

金山寛 氏 (九州大学大学院工学研究院)
Tsunami simulation of Hakata Bay using the viscous shallow-water equations (JAPANESE)
[ 講演概要 ]
The tsunami caused by the great East Japan earthquake gave serious damage in the coastal areas of the Tohoku district. Numerical simulation is used for damage prediction as disaster measures to these tsunami hazards. Generally in the numerical simulation about the tsunami propagation to the coast from an open sea, shallow-water equations are used. This research focuses on viscous shallow-water equations and attempts to generate a computational method using finite element techniques based on the previous investigations of Kanayama and Ohtsuka (1978). First, the viscous shallow-water equation system is derived from the Navier-Stokes equations, based on the assumption of hydrostatic pressure in the direction of gravity. Next the numerical scheme is shown. Then, tsunami simulations of Hakata Bay and Tohoku-Oki are shown using the approach. Finally, a stability condition in L2 sense for the numerical scheme of a linearized viscous shallow-water problem is introduced from Kanayama and Ushijima (1988-1989) and its actual effectiveness is discussed from the view point of practical computation. This presentation will be done in Japanese.
[ 参考URL ]
http://www.infsup.jp/utnas/