Dynamics of the fluidized granular bed under nearshore ocean waves

2014 Fiscal Year Final Research Report

• Project/Area Number: 23760450
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Hydraulic engineering
• Research Institution: Hokkaido University
• Principal Investigator: SARUWATARI Ayumi 北海道大学, 工学(系)研究科(研究院), 助教 (00563876)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 屈折率整合 / 粒子底面 / 可視化計測 / 流動化 / 浮遊粒子

Outline of Final Research Achievements

A new technique for visualizing a granular flow with high number concentration is developed in this study. Although suspension and transport of the bottom particles are one of the important features determining morphological conditions under the ocean waves, there is no sufficient model to predict sediment transport because of the difficulty of the direct measurement of the flow field around the granular bottom. This technique enable us to visualize the flow field inside of the fluidized granular bed. Dynamics of the sediment transport and generation of the vorticity and turbulence near the fluidized bed are investigated by the laboratory experiments using this technique.

Free Research Field

海岸工学