Výsledky vyhledávání - "Olivier Eiff"

Decay of the perturbations induced by a horizontal cylinder across an open-channel flow

Autor: Théo Fernandez, Ingo Schnauder, Olivier Eiff, Koen Blanckaert

A laboratory study is reported on the flow perturbations induced by a cylinder across an open-channel flow at a subcritical Reynolds number of ReD = 104 (based on the cylinder diameter). Inspired by field measurements on the Plizska River, Poland (Bl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f486abdd3fb0226ae6007f5d865424d
https://doi.org/10.5194/egusphere-egu23-7250

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Shear layers in two-stage compound channels investigated with LS-PIV

Autor: Victor Dupuis, Laura Schraen, Olivier Eiff

Publikováno v: Experiments in Fluids, 64 (2), Art.-Nr.: 24

Flow experiments are conducted in a two-stage compound open-channel, with varying intensity of the velocity difference between the main channel (deep part) and the floodplain (shallower part), using a large-scale free surface PIV technique (LS-PIV).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b507543225ab9daba75eeaeeb3d1816
https://publikationen.bibliothek.kit.edu/1000155725

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Hydrodynamics in the near-wake of cylindrical obstacles in a turbulent open channel flow

Autor: Théo Fernandez, Ingo Schnauder, Olivier Eiff, Koen Blanckaert

The research concerns the hydrodynamic processes around obstacles of cylindrical shape installed across an open channel flow at a subcritical Reynolds number of ReD = 1 x 104 (based on the cylinder diameter), and the forces exerted by the turbulent f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::990d27cb323bf1c3e15be8338a51a242
https://doi.org/10.5194/egusphere-egu22-11911

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Bridging the gap between leaf surface and the canopy air space: Leaf size matters for heat transfer resistance at canopy-scale

Autor: Gitanjali Thakur, Stanislaus Schymanski, Ivonne Trebs, Kaniska Mallick, Mauro Suils, Olivier Eiff, Erwin Zehe

The concept of canopy-scale resistances was developed to investigate and evaluate the transfer of momentum, heat and mass from the leaf surface to the canopy air space and to the atmosphere. Therefore, reliable estimates of resistances are of fundame

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::faa827c6002d8e707ce514dde7019567
https://doi.org/10.5194/egusphere-egu22-4268

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Fine‐Sediment Erosion and Sediment‐Ribbon Morphodynamics in Coarse‐Grained Immobile Beds

Autor: Michele Trevisson, Olivier Eiff

Publikováno v: Water Resources Research, 58 (11), Art.: e2021WR031837

In rivers, fine sediments are often transported over immobile coarse grains. With low sediment supply, they tend to aggregate in longitudinal ribbons. Yet, the long-term evolution of such ribbons and the influence of immobile grains on the erosion of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb0c8d71b0632d445d90e23f236e6687
https://publikationen.bibliothek.kit.edu/1000153774

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Morphological controls on Hortonian surface runoff: An interpretation of steady-state energy patterns, maximum power states and dissipation regimes within a thermodynamic framework

Autor: Olivier Eiff, Ulrike Scherer, Samuel Schroers, Erwin Zehe, Jan Wienhöfer, Axel Kleidon

Recent developments in hydrology have led to a new perspective on runoff processes, extending beyond the classical mass dynamics of water in a catchment. For instance, stream flow has been analysed in a thermodynamic framework, which allows the incor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23d3f6de70d0184ac18c1efb6b65882f
https://hess.copernicus.org/preprints/hess-2021-479/

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The Impact of Coarse‐Grain Protrusion on Near‐Bed Hydrodynamics

Autor: Olivier Eiff, David Raus, Frédéric Moulin

Publikováno v: Journal of Geophysical Research: Earth Surface
Journal of Geophysical Research: Earth Surface, American Geophysical Union/Wiley, 2019, 124 (7), pp.1854-1877. ⟨10.1029/2018JF004751⟩

International audience; In steep rivers, sediment is often transported over immobile cobbles and boulders. Previous studies of such conditions have observed that the entrainment rate of the mobile sediment strongly depends on the level of protrusion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16b28982a5dc08fcf9cfa0670f100a8f
https://doi.org/10.1029/2018jf004751

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Hortonian Overland Flow, Hillslope Morphology and Stream Power I: Spatial Energy Distributions and Steady-state Power Maxima

Autor: Jan Wienhöfer, Samuel Schroers, Olivier Eiff, Axel Kleidon, Erwin Zehe

Recent developments in hydrology have led to a new perspective on runoff processes, extending beyond the classical mass dynamics of water in a catchment. For instance, stream flow has been analyzed in a thermodynamic framework, which allows the incor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7480376044a7a729f4bf2e4f8c42d42
https://doi.org/10.5194/hess-2021-79

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Exploring flow-biofilm-sediment interactions: Opportunities and challenges

Autor: Sabine Gerbersdorf, Kaan Koca, Dirk deBeer, Arjun Chennu, Christian Noss, Ute Risse-Buhl, Markus Weitere, Olivier Eiff, Michael Wagner, Jochen Aberle, Michael Schweikert, Terheiden Kristina

The feedback mechanisms within the “triangle” flow-biofilm-sediment are crucial for a variety of important ecosystem functions within the aquatic habitat. With great progress made in measurement techniques in fluid mechanics as well as microbiolo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4fd194497c0c95b29097f184066036c9
https://doi.org/10.5194/biofilms9-160

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