Multi-scale tsunami run-up analysis to extract local information contributing to disaster prevention from global tsunami propagation analysis

2016 Fiscal Year Final Research Report

• Project/Area Number: 26282106
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Kyushu University
• Principal Investigator: Asai Mitsuteru 九州大学, 工学(系)研究科(研究院), 准教授 (90411230)
• Co-Investigator(Kenkyū-buntansha): 笠間 清伸 九州大学, 工学(系)研究科(研究院), 准教授 (10315111) ; 一色 正晴 愛媛大学, 理工学研究科, 講師 (30583687) ; 伊津野 和行 立命館大学, 理工学部, 教授 (90168328)
• Research Collaborator: IZUNO Kazuyuki 東北大学, 災害科学国際研究所, 教授 (40213243)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 津波 / 粒子法 / マルチフィジックス解析

Outline of Final Research Achievements

On March 11, 2011, the huge tsunami caused by the great east Japan earthquake devastated many infrastructures in pacific coast of north eastern Japan.　Particularly, the damage of outflow of bridge girders caused a traffic disorder and these collapse behaviours led to delay of recovery after the disaster.After 2011 tsunami, disaster prevention and mitigation techniques are actively　developing in coastal infrastructures and establishing prediction method for tsunami disaster is one of the severe issues toward the next millennium tsunami.
In this study, a multi -level and - physics tsunami simulator based on the Smoothed Particle Hydrodynamics (SPH) Method has been developed. The last level (Level-2) can treat multi-physics problem, and the simulator can predict bridge wash out accidents during tsunami by using one of the modules of multi-physics simulation. Each level can be connected by a proposed virtual wave maker.

Free Research Field

自然災害科学