Environmental Fluid Mechanics

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Bursting phenomenon created by bridge piers group in open channel flow
Environmental Fluid Mechanics - Tập 23 - Trang 125-140 - 2023
Nima Ikani, Jaan H. Pu, Tarek Taha, Prashanth Reddy Hanmaiahgarib, Nadia Penna
Bridge pier is a common feature in hydraulic structure. Its impact to the river usually occurs in group form rather than single pier, so this challenging piers-group influence towards river hydraulics and turbulence needs to be explored. In this paper, the measurements were conducted using an Acoustic doppler velocimeter (ADV) to study velocities in three dimensions (longitudinal, transversal, and...... hiện toàn bộ
Effects of a sharp change of emergent vegetation distributions on thermally driven flow over a slope
Environmental Fluid Mechanics - Tập 15 - Trang 771-791 - 2014
Ying-Tien Lin, Chin H. Wu
In this study, thermally driven flow within a sharp change of rooted emergent vegetation distributions is discussed. A conceptual and linear model is developed to study the interferences and competitions between two forcing mechanisms (vegetation shading and sloping bottom effects) on circulation patterns. The two forcing mechanisms can counteract or reinforce each other according to the presence ...... hiện toàn bộ
Using discriminant analysis to determine the breaking criterion for an ISW propagating over a ridge
Environmental Fluid Mechanics - Tập 10 - Trang 577-586 - 2010
Chen-Yuan Chen
This study aims to develop methods that are capable of deciding the breaking criterion for an internal solitary wave (ISW) propagating over a submarine ridge. Laboratory experiments were conducted in a wave tank to measure ISWs propagating over a submarine ridge. The results suggest that the ISW-ridge interaction can be grouped according to three degrees of magnitude based on the blockage paramete...... hiện toàn bộ
Evolution and decay of gravity wavefields in weak-rotating environments: a laboratory study
Environmental Fluid Mechanics - Tập 18 - Trang 1509-1531 - 2018
Pedro Rojas, Hugo N. Ulloa, Yarko Niño
Gravity waves are prominent physical features that play a fundamental role in transport processes of stratified aquatic ecosystems. In a two-layer stratified basin, the equations of motion for the first vertical mode are equivalent to the linearised shallow water equations for a homogeneous fluid. We adopted this framework to examine the spatiotemporal structure of gravity wavefields weakly affect...... hiện toàn bộ
Hydrodynamics and contaminant transport on a degraded bed at a 90-degree channel confluence
Environmental Fluid Mechanics - Tập 18 Số 2 - Trang 443-463 - 2018
Hongwu Tang, Huiming Zhang, Saiyu Yuan
Discussion of “Tang, H., Zhang, H., & Yuan, S. (2018). Hydrodynamics and contaminant transport on a degraded bed at a 90-degree channel confluence. Environmental Fluid Mechanics, 18(2), 443–463”
Environmental Fluid Mechanics - - 2018
Sébastien Pouchoulin, Pedro Cunha Ramos, Emmanuel Mignot, Laurent Schindfessel, Tom De Mulder, Nicolas Rivière
Fine scale structure of convective mixed layer in ice-covered lake
Environmental Fluid Mechanics - Tập 19 - Trang 751-764 - 2018
Sergey Volkov, Sergey Bogdanov, Roman Zdorovennov, Galina Zdorovennova, Arkady Terzhevik, Nicolay Palshin, Damien Bouffard, Georgiy Kirillin
Nonstationary convection forced by distributed buoyancy sources is a fundamental environmental fluid mechanics process, particularly in ice-covered freshwater waterbodies. In this paper, we present novel field-based results that characterise the diurnal evolution of the main energetics of radiatively-driven convection in ice-covered lakes that is the radiatively-induced buoyancy flux, B, and the k...... hiện toàn bộ
Buoyancy-Driven Two-Layer Exchange Flows Across a Slowly Submerging Barrier
Environmental Fluid Mechanics - Tập 6 - Trang 133-151 - 2006
Alan J. S. Cuthbertson, Janek Laanearu, Peter A. Davies
Results are presented from a combined analytical and laboratory study of unsteady, two-layer, density-driven, sub-maximal exchange over a slowly-descending estuarine barrier located very close to the junction of the river mouth and the near-shore coastal zone. As in the precursor study (Cuthbertson et al. 2004, Environ. Fluid Mech. 4, 127–155) that the present investigation extends, the rate of de...... hiện toàn bộ
Tối ưu hóa thiết kế cấu trúc trong dòng chảy dựa trên mô phỏng: Các ván đá Dịch bởi AI
Environmental Fluid Mechanics - - 2018
A. Khosronejad, J. L. Kozarek, P. Diplas, C. Hill, R. Jha, P. Chatanantavet, N. Heydari, F. Sotiropoulos
Chúng tôi áp dụng mô hình động lực học thủy lực kết hợp ba chiều, Mô phỏng Dòng chảy Ảo (VFS-Geophysics) ở chế độ Navier–Stokes trung bình Reynolds không ổn định, đóng với mô hình $$k-\omega$$ để mô phỏng dòng chảy hỗn loạn và vận chuyển sediment trong các dòng nước có đáy cát và sỏi quy mô lớn dưới các điều kiện mô hình và đáy sống. Kết quả mô phỏng được sử dụng để thực hiện các thí nghiệm số hệ ...... hiện toàn bộ
#mô phỏng dòng chảy #cấu trúc trong dòng chảy #ván đá #vận chuyển sediment #mô hình thủy động lực học
Analysis of the velocity field in a large rectangular channel with lateral shockwave
Environmental Fluid Mechanics - Tập 7 - Trang 519-536 - 2007
M. Ben Meftah, F. De Serio, M. Mossa, A. Pollio
In this work the authors describe the main characteristics of the velocity field of hydraulic jumps in a very large channel where lateral shockwaves occur. Experiments were carried out at the Coastal Engineering Laboratory of the Water Engineering and Chemistry Department of the Technical University of Bari (Italy). Extensive flow velocity measurements were investigated in order to have a clearer ...... hiện toàn bộ
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