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Title: Tsunami-driven debris experiment with varied density group conditions
It presents an experimental study of tsunami-driven debris transport over the flat testbed. We utilize two types of debris elements, which have the same shape but different material (wood, HDPE) to create debris of different density. We considered variations in the grouping of debris (wood only, mixed wood and HDPE, and HDPE only), parameterized by the mean specific gravity (SGg). The final dislocations and local velocity of debris elements were optically measured and compared to flow velocity. The effects of obstacles on the passage of debris and the probability of collision to obstacles were examined and the process of debris-debris and debris-obstacle interactions from debris entrainment to final dislocation was studied. The curated data could be utilized to understand initial debris entrainment, and espeically utilized to verify/validate a numerical debris transportation model. This work highlights the importance of considering debris density in estimating the longitudinal distance and spreading angle. These variables were less dependent on the initial configuration of the debris field. Future studies should consider other aspects of the phenomena, including a better understanding of the potential impact by debris on obstacles, the role of the return flow in determining the debris trajectory, and investigations of the obstacles that more realistically reflect urban shorelines subjected to strong overland flow.  more » « less
Award ID(s):
1661315
PAR ID:
10304229
Author(s) / Creator(s):
;
Publisher / Repository:
Designsafe-CI
Date Published:
Subject(s) / Keyword(s):
Debris and Hydraulic tests Debris tests Hydraulic test (no debris) Event_Debris tests Event_Hydraulic tests Relevant documents Ohhwrl-Oregon
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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