In the present research, the effect rough corrugated bed channels on the sediment transport and of the flow passes is studied. Hypothetically, four scenarios of bed cases are tested. In the first case, using large eddy simulation, LES, an investigation of smooth bed is performed for ReT equals 395 (number of Reynolds calculated using the mean friction velocities at wall). The other three corrugated sinusoidal bed shape cases are assumed with different amplitudes and constant wavelengths. An eddy viscosity model which is adapted to wall is applied in this research; while the subgrid scale quantity is depend on the hypothesis gradient. A comparison between data of Cherukat et al. [5] obtained from Direct Numerical Simulation, DNS, and the data measured by Hudson et al. [11] with the corresponding computed flow is done. Then, wavy sinusoidal bed shape case is considered. From this study, it was found that the flow is affect strongly by the bed corrugations and the sediment transport is more sensitive for the larger heights of bed corrugations. Also, it is proved that the Rouse theory could be applied clearly in outer zone of the corrugated bed. It is explained generally in this paper that the profiles of turbulent Schmidt number are not affected by the height of corrugation.
| Published in | Journal of Water Resources and Ocean Science (Volume 5, Issue 6) |
| DOI | 10.11648/j.wros.20160506.16 |
| Page(s) | 114-121 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2017. Published by Science Publishing Group |
LES, Sediment Transport, Numerical Modeling, Rough Bed
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APA Style
Mohamed Gamal Abdalla. (2017). Effect of Corrugated Rough Bed Channels on Sediment Transport Processes. Journal of Water Resources and Ocean Science, 5(6), 114-121. https://doi.org/10.11648/j.wros.20160506.16
ACS Style
Mohamed Gamal Abdalla. Effect of Corrugated Rough Bed Channels on Sediment Transport Processes. J. Water Resour. Ocean Sci. 2017, 5(6), 114-121. doi: 10.11648/j.wros.20160506.16
AMA Style
Mohamed Gamal Abdalla. Effect of Corrugated Rough Bed Channels on Sediment Transport Processes. J Water Resour Ocean Sci. 2017;5(6):114-121. doi: 10.11648/j.wros.20160506.16
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Download@article{10.11648/j.wros.20160506.16,
author = {Mohamed Gamal Abdalla},
title = {Effect of Corrugated Rough Bed Channels on Sediment Transport Processes},
journal = {Journal of Water Resources and Ocean Science},
volume = {5},
number = {6},
pages = {114-121},
doi = {10.11648/j.wros.20160506.16},
url = {https://doi.org/10.11648/j.wros.20160506.16},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wros.20160506.16},
abstract = {In the present research, the effect rough corrugated bed channels on the sediment transport and of the flow passes is studied. Hypothetically, four scenarios of bed cases are tested. In the first case, using large eddy simulation, LES, an investigation of smooth bed is performed for ReT equals 395 (number of Reynolds calculated using the mean friction velocities at wall). The other three corrugated sinusoidal bed shape cases are assumed with different amplitudes and constant wavelengths. An eddy viscosity model which is adapted to wall is applied in this research; while the subgrid scale quantity is depend on the hypothesis gradient. A comparison between data of Cherukat et al. [5] obtained from Direct Numerical Simulation, DNS, and the data measured by Hudson et al. [11] with the corresponding computed flow is done. Then, wavy sinusoidal bed shape case is considered. From this study, it was found that the flow is affect strongly by the bed corrugations and the sediment transport is more sensitive for the larger heights of bed corrugations. Also, it is proved that the Rouse theory could be applied clearly in outer zone of the corrugated bed. It is explained generally in this paper that the profiles of turbulent Schmidt number are not affected by the height of corrugation.},
year = {2017}
}
TY - JOUR T1 - Effect of Corrugated Rough Bed Channels on Sediment Transport Processes AU - Mohamed Gamal Abdalla Y1 - 2017/02/03 PY - 2017 N1 - https://doi.org/10.11648/j.wros.20160506.16 DO - 10.11648/j.wros.20160506.16 T2 - Journal of Water Resources and Ocean Science JF - Journal of Water Resources and Ocean Science JO - Journal of Water Resources and Ocean Science SP - 114 EP - 121 PB - Science Publishing Group SN - 2328-7993 UR - https://doi.org/10.11648/j.wros.20160506.16 AB - In the present research, the effect rough corrugated bed channels on the sediment transport and of the flow passes is studied. Hypothetically, four scenarios of bed cases are tested. In the first case, using large eddy simulation, LES, an investigation of smooth bed is performed for ReT equals 395 (number of Reynolds calculated using the mean friction velocities at wall). The other three corrugated sinusoidal bed shape cases are assumed with different amplitudes and constant wavelengths. An eddy viscosity model which is adapted to wall is applied in this research; while the subgrid scale quantity is depend on the hypothesis gradient. A comparison between data of Cherukat et al. [5] obtained from Direct Numerical Simulation, DNS, and the data measured by Hudson et al. [11] with the corresponding computed flow is done. Then, wavy sinusoidal bed shape case is considered. From this study, it was found that the flow is affect strongly by the bed corrugations and the sediment transport is more sensitive for the larger heights of bed corrugations. Also, it is proved that the Rouse theory could be applied clearly in outer zone of the corrugated bed. It is explained generally in this paper that the profiles of turbulent Schmidt number are not affected by the height of corrugation. VL - 5 IS - 6 ER -
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