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http://dx.doi.org/10.3741/JKWRA.2021.54.6.407

Two-dimensional numerical experiment considering cohort size and wood jam characteristic on driftwood  

Kang, Taeun (Department of Civil Engineering, Korea National University of Transportation)
Jang, Chang-Lae (Department of Civil Engineering, Korea National University of Transportation)
Publication Information
Journal of Korea Water Resources Association / v.54, no.6, 2021 , pp. 407-418 More about this Journal
Abstract
In this study, the two-dimensional flow model, Nays2DH, and driftwood dynamics model were combined to analyze the flow and driftwood behavior depending on the characteristics of the inflow of driftwood and the length of the driftwood stem. In particular, the Dashpot-spring model was added to the driftwood dynamics model to simulate the collision motion of the driftwood, and the wood jam characteristics by the collision of the driftwood were compared. As a result of the simulation, the pass rate of the obstacle section, the travel distance of wood jam, and the mean position of the wood pieces were respondent sensitively by the length of the driftwood stem, but the cohort size of the driftwood supply was insignificant excepting for the pass rate. Through this study, we could understand the interaction between hydraulic structures and driftwood, and through this, it is believed that it will be helpful in establishing a durable maintenance plan for hydraulic structures by predicting the transport and jam formation phenomena of driftwood in advance.
Keywords
Driftwood; Large wood; Driftwood modelling; Driftwood dynamics model; Wood jam; Dashpot-spring model;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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