BOKU - Universität für Bodenkultur Wien - Forschungsinformationssystem
Gewählte Publikation:
Yucesan, S; Wildt, D; Gmeiner, P; Schobesberger, J; Hauer, C; Sindelar, C; Habersack, H; Tritthart, M.
(2021):
Interaction of Very Large Scale Motion of Coherent Structures with Sediment Particle Exposure
WATER-SUI. 2021; 13(3), 248
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- Abstract:
- A systematic variation of the exposure level of a spherical particle in an array of multiple spheres in a high Reynolds number turbulent open-channel flow regime was investigated while using the Large Eddy Simulation method. Our numerical study analysed hydrodynamic conditions of a sediment particle based on three different channel configurations, from full exposure to zero exposure level. Premultiplied spectrum analysis revealed that the effect of very-large-scale motion of coherent structures on the lift force on a fully exposed particle resulted in a bi-modal distribution with a weak low wave number and a local maximum of a high wave number. Lower exposure levels were found to exhibit a uni-modal distribution.
- Autor*innen der BOKU Wien:
- Gmeiner Philipp
- Habersack Helmut
- Hauer Christoph
- Schobesberger Johannes
- Sindelar Christine
- Tritthart Michael
- Wildt Daniel
- Yücesan Sencer
- Find related publications in this database (Keywords)
- coherent structures
- hairpin-vortex packets
- hydrodynamic forces
- particle entrainment
- very-large-scale motions
- turbulent channel flow
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