Numerical Modeling on Transportation process of Water Hyacinth using Distinct Element Method

Overgrowth of water hyacinth can cause several kinds of problems to water management. This plant is listed in one of the invasive alien species in Japan. In this study, it physical properties were measured. And numerical model was developed to predict transportation processes of water hyacinth. In modeling on water hyacinth, each plant was treated as columnar floating element, and interacting forces cased by collision of each other were calculated using the distinct element method

当院消化器内科病棟患者における在院日数が長期化する因子

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