On the dependency of a particle jump during sediment transport on its shape

Research output: Contribution to book/Conference proceedings/Anthology/ReportConference contributionContributedpeer-review

Contributors

Abstract

In the present contribution, the effect of two different particle shapes on the jumping behavior in bed load sediment transport is investigated. Trajectories of saltating particles extracted from Direct Numerical Simulations of a large number of monodisperse particles were used to produce optimal average trajectories and orientations over the course of the jumps while preserving characteristic motion patterns. This was realized by applying dynamic time warping barycenter averaging optimized for jump trajectories to saltating particles. The two shapes compared are an ellipsoid representing the average particle in sediment transport and a spherical particle. The provided average trajectories indicate a significant impact of the particle shape onto its motion under the conditions analyzed. For instance, although the trajectories feature similarities in shape, ellipsoidal particles are observed to travel further in each direction and, furthermore, align with the direction of the flow.

Details

Original languageEnglish
Title of host publicationRiver Flow 2024
EditorsIacopo Carnacina, Mawada Abdellatif, Manolia Andredaki, James Cooper, Darren Lumbroso, Virginia Ruiz-Villanueva
Pages646-654
Number of pages9
ISBN (electronic)9781003475378
Publication statusPublished - 2025
Peer-reviewedYes

External IDs

Scopus 105003264596
ORCID /0000-0003-1653-5686/work/187561314