BED STRESS IMPORTANCE UNDER SOLITARY WAVE RUN UP
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概要
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Solitary wave run up phenomenon has been studied widely. Its similarity to tsunami has magnified the importance of the study. Bed stress will have significant influence during this stage. Nevertheless, it is unclear where the bed stress dominant flow regime will occur. In this study, SWE model is coupled with k-w model, to achieve a more accurate bed stress assessment. The conventional Manning method approach for bed stress is replaced with a direct assessment from the boundary layer using the k-w model. Numerical experiment is conducted to estimate proper criteria to define the demarcation line for bed stress dominance regime. Bed stress effect is investigated by analyzing each of the momentum terms. It is found that the run up process can be classified into five phases based on the bed stress importance. Furthermore, a new parameter is proposed as a demarcation line for bed stress importance region.
- Japan Society of Civil Engineersの論文
Japan Society of Civil Engineers | 論文
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