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LEVEE OVERFLOW SIMULATION BY MODIFIED BOUSSINESQ-TYPE EQUATIONS
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- MORI Tomohiro
- 日本工営株式会社 コンサルタント海外事業本部
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- SHIMOZONO Takenori
- 東京大学大学院 工学系研究科社会基盤学専攻
Bibliographic Information
- Other Title
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- 修正ブシネスク方程式による堤防越流モデルの構築
- シュウセイ ブシネスク ホウテイシキ ニ ヨル テイボウエツリュウ モデル ノ コウチク
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Description
The non-hydrostatic pressure needs to be taken into account in depth-integrated modeling of levee overflows especially with a large overflow depth. A possible approach may be to employ the Boussinesq-type equations as model equations. However, conventional Boussinesq-type models tend to be unstable around the levee crest by oscilations introduced by the high-order terms when applied to overflow simulations. In order to enhance the model stability, we enhance the Boussinesq-type equations by adding a modification term with a free parameter. We investigate how the modification term affects model stability and accuracy and specify a possible range of the modification parameter through comparions of model results with experimental data
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 73 (2), I_13-I_18, 2017
Japan Society of Civil Engineers