Development of tsunami model integrating the Finite Difference Method and the Finite Vomule Method

2015 Fiscal Year Final Research Report

• Project/Area Number: 26820206
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Hydraulic engineering
• Research Institution: 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群)
• Principal Investigator: Shigihara Yoshinori 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工, その他部局等, 講師 (90532804)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 津波 / 有限差分法 / 有限体積法 / 数値シミュレーション

Outline of Final Research Achievements

This study aims to develop a tsunami numerical model which is capable to include several grid systems and facilitate the process of assembling domains of different resolutions. The assembly of structured domains (inner and outer) is achieved by constructing an intermediate unstructured grid between them. The Boussinesq model are used for the governing equations. The present scheme is able to diminish short period waves reflected on the boundary of a coarse grid domain.
A numerical simulation consisting of a Gaussian-hump shape is used for validation by determining the energy transferred/retained in a finer grid domain. In addition a practical application, the 2011 Tohoku Tsunami, is provided as a case study to confirm the validity of proposed model.

Free Research Field

水工学