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Ilgar Safak
Pág. 1 - 14
Drag force at the bed acting on water flow is a major control on water circulation and sediment transport. Bed drag has been thoroughly studied in sandy waters, but less so in muddy coastal waters. The variation of bed drag on a muddy shelf is investigat...
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Mukesh Upadhyay, Ayeon Kim, Heehyang Kim, Dongjun Lim and Hankwon Lim
Accurate prediction of the hydrodynamic profile is important for circulating fluidized bed (CFB) reactor design and scale-up. Multiphase computational fluid dynamics (CFD) simulation with interphase momentum exchange is key to accurately predict the gas-...
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Ilgar Safak
Drag force at the bed acting on water flow is a major control on water circulation and sediment transport. Bed drag has been thoroughly studied in sandy waters, but less so in muddy coastal waters. The variation of bed drag on a muddy shelf is investigat...
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Alessandro Scarpellini, Valentina Finazzi, Paolo Schito, Arianna Bionda, Andrea Ratti and Ali Gökhan Demir
This work demonstrates the advantages of using laser powder bed fusion for producing a rudder bulb of a moth class sailing racing boat via laser powder bed fusion (LPBF). The component was designed to reduce weight using an AlSi7Mg0.6 alloy and incorpora...
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Sadegh Derakhshan, Esmaeil Dodangeh, Hossein Afzalimehr, Mohammad Nazari-Sharabian, Hamidreza Raeisifar and Moses Karakouzian
Aquatic vegetation plays a critical role in aquatic environments and provides various valuable services. To characterize vegetation, vegetation density and flexibility are usually used as parameters, but aquatic vegetation found in nature may have a non-...
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Giuseppe Tripepi, Francesco Aristodemo and Paolo Veltri
A two-dimensional (2D) laboratory investigation on the horizontal and vertical hydrodynamic forces induced by tsunami-like solitary waves on horizontal circular cylinders placed on a rigid sea bed is presented. A series of 30 physical model tests was con...
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Ludovic Cassan, Hélène Roux, Pierre-André Garambois
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A friction model resulting from investigations into macro-roughness elements in fishways has been compared with a broad range of studies in the literature under very different bed configurations. In the context of flood modelling or aquatic habitats, the...
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Clémentine Chirol, Carl L. Amos, Hachem Kassem, Alice Lefebvre, Georg Umgiesser and Andrea Cucco
Estimates of bed roughness used for predictions of sediment transport are usually derived either from simple scalars of the physical roughness (i.e., ripple height or grain size) or from the hydrodynamic roughness length (Zo) based upon velocity gradient...
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Cheng Zeng, Yimo Bai, Jie Zhou, Fei Qiu, Shaowei Ding, Yudie Hu and Lingling Wang
Floodplain vegetation is of great importance in velocity distribution and turbulent coherent structure within compound open channel flows. As the large eddy simulation (LES) technique can provide detailed instantaneous flow dynamics and coherent turbulen...
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Ichiro Kimura, Taeun Kang and Kazuo Kato
The accumulation of driftwood during heavy rainfall may block river channels and damage structures. It is necessary to mitigate such effects by periodically capturing and removing driftwood from rivers. In this study, the behavior of driftwood in open-ch...
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Jochen Kämpf and Paul M. Myrow
We studied wave-created high-density mud suspensions (fluid mud) using a one-dimensional water column (1DV) model that includes k-e turbulence closure at a high vertical resolution with a vertical grid spacing of 1 mm. The k-e turbulence model includes t...
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Wei-Bo Chen and Wen-Cheng Liu
A large amount of accurate river cross-section data is indispensable for predicting river stages. However, the measured river cross-section data are usually sparse in the transverse direction at each cross-section as well as in the longitudinal direction...
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Wei-Bo Chen, Wen-Cheng Liu
Pág. 1 - 24
A large amount of accurate river cross-section data is indispensable for predicting river stages. However, the measured river cross-section data are usually sparse in the transverse direction at each cross-section as well as in the longitudinal direction...
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Philip A. Gillibrand, Roy A. Walters and Jason McIlvenny
We apply a three-dimensional hydrodynamic model to consider the potential effects of energy extraction by an array of tidal turbines on the ambient near-bed velocity field and local bed shear stress in a coastal channel with strong tidal currents. Local ...
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Eko Yudiyanto,I Nyoman Gede Wardana,Nurkholis Hamidi,Denny Widhiyanuriyawan
Pág. 15 - 23
The impinging fluid can be used as a prevention of sedimentation in the flow of the pipe and the mixing process. Sedimentation is a problem that often occurs in fluid transportation and fluidization. Granular material behavior due to impinging is a pheno...
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