Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Bernhard Vowinckel"'
Publikováno v:
Flow, Vol 3 (2023)
Cohesive particulate flows play an important role in environmental fluid dynamics, as well as in a wide variety of civil and process engineering applications. However, the scaling laws, constitutive equations and continuum field descriptions governin
Externí odkaz:
https://doaj.org/article/da3f777e143e40afa7f3fa078b9e6031
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
The flocculation behavior of clay minerals in aquatic environments is an important process in estuarine and riverine dynamics, where strong gradients in salinity can locally occur. Various contradicting observations have been reported in the literatu
Externí odkaz:
https://doaj.org/article/7bb90703c8694e92a67fd22ffa5635f7
Publikováno v:
Progress in Earth and Planetary Science, Vol 4, Iss 1, Pp 1-13 (2017)
Abstract We employ direct numerical simulations of the three-dimensional Navier-Stokes equations, based on a continuum formulation for the sediment concentration, to investigate the physics of turbidity currents in complex situations, such as when th
Externí odkaz:
https://doaj.org/article/b0be1f2b19f34d43ab792d22fbc275ac
Intense sediment transport situations such as debris flows and mudslides consisting of fine-grained particles can pose serious threats to human infrastructures and lives. A thorough understanding of the rheology of such cohesive granular flows is cru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f96dcdae64f350c9df4edc1aea3e007b
https://doi.org/10.5194/egusphere-egu23-2270
https://doi.org/10.5194/egusphere-egu23-2270
Publikováno v:
Journal of Fluid Mechanics. 942
We investigate the submerged collapse of weakly polydisperse, loosely packed cohesive granular columns, as a function of aspect ratio and cohesive force strength, via grain-resolving direct numerical simulations. The cohesive forces act to prevent th
Autor:
Bernhard Vowinckel, Kunpeng Zhao, Leiping Ye, Andrew J. Manning, Tian-Jian Hsu, Eckart Meiburg, Bofeng Bai
Publikováno v:
Sediment Transport-Recent Advances
Due to climate change, sea level rise and anthropogenic development, coastal communities have been facing increasing threats from flooding, land loss, and deterioration of water quality, to name just a few. Most of these pressing problems are directl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64b28177ff61d5641a88ef7bbc43d1f4
https://mts.intechopen.com/articles/show/title/physics-of-cohesive-sediment-flocculation-and-transport-state-of-the-art-experimental-and-numerical-
https://mts.intechopen.com/articles/show/title/physics-of-cohesive-sediment-flocculation-and-transport-state-of-the-art-experimental-and-numerical-
Autor:
Bernhard Vowinckel
Publikováno v:
Acta Mechanica. 232:2023-2050
Sediment transport simulations face the challenge of accounting for vastly different scales in space and time that cannot be tackled by a unifying approach. Instead, processes are subdivided into a microscale at the particle level, a mesoscale of a l
Autor:
Jorge A. Penaloza-Giraldo, Tian-Jian Hsu, Andrew J. Manning, Leiping Ye, Bernhard Vowinckel, Eckart Meiburg
Publikováno v:
Water Research. 233:119780
Storm waves transport and sort coarse gravel along coasts. This fundamental process is important under changing sea-levels and increased storm frequency and intensity. However, limited information on intra-storm clast motion restricts theory developm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34143d2be5629efdc787a814ae6636de
https://doi.org/10.5194/egusphere-egu22-6075
https://doi.org/10.5194/egusphere-egu22-6075
Publikováno v:
Proceedings of the 39th IAHR World Congress.