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James Yang, Shicheng Li, Anna Helgesson, Erik Skepparkrans and Anders Ansell
The piano key (PK) weir is a cost-effective structure for flood discharge. Its typical layout comprises a rectangularly cranked crest in planform with up- and downstream overhangs. With the intention to enhance its hydraulic efficiency, the conventional ...
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Hyeonju Lee, Eunhee Lee, Yongcheol Kim, Soo-Hyoung Lee and Min-Ho Koo
During the cold dry season, a large amount of groundwater is pumped for water-curtain cultivation in agricultural fields mostly located near the four major rivers of South Korea. Several weirs, installed previously to secure sufficient water resources fr...
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Milad Abdollahpour, Ali Hosseinzadeh Dalir, Davod Farsadizadeh, Carlo Gualtieri
Pág. 1 - 15
Erosion in river bends causes loss of agricultural lands, adjacent facilities, and fish habitat. W-weir structures are recommended for controlling and reducing soil erosion as well as developing habitat for fish and other aquatic organisms. This paper pr...
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Zong-Fu Fu, Zhen Cui, Wen-Hong Dai and Yue-Jun Chen
Combined orifice-weir flow is a complex phenomenon in hydropower and the discharge capacity of a structure affects the safety of the structure. It is essential to propose an equation for computing the discharge coefficient of combined orifice-weir flow. ...
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Forough Alizadeh Sanami, Amir Ghaderi, Fardin Alizadeh Sanami, Parisa Mirkhorli and Silvia Di Francesco
A piano key weir (PKW), a new type of weir aiming to increase the discharge capacity of an existing dam, was recently designed. Despite a large body of research in this field, only a few studies were conducted on A-type triangular piano key weirs (TPKW) ...
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Myoung Hoon Lee, Hye Seon Kim, Dongwoo Yang, Bada Ryu, Young-Suk Jang, Young-Il Kim, Chae-Un Park, Joo Myun Park, Jong Dae Do and Haryun Kim
Deteriorated river water quality affects estuarine environments due to river and estuary linkages. Thus, river water quality improvement could play a pivotal role in the maintenance of estuarine ecosystem functions. The South Korean administration opened...
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Jin-Kyoung Han, Woo-Suk Jung, Jung-Min Kim, In-Hwan Park and Young-Do Kim
In this study, the water quality change in a stagnant controlled river containing hard management structures due to pulsed flow was simulated. The Environmental Fluid Dynamics Code (EFDC) model was used for the water quality change simulation, and the wa...
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Azmeri Azmeri,Henny Herawati,Nur Aisya Amalia,Faris Zahran Jemi
Pág. 95 - 105
Krueng Baro Irrigation network is a strategic technical irrigation area in Pidie, Aceh, Indonesia. The primary water source is the Krueng Baro River flow using the infrastructure of Keumala Weir in which sedimentation is currently a significant problem i...
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Yuejun Chen, Zongfu Fu, Qingsheng Chen and Zhen Cui
Rectangular short-crested weirs are widely used for simple structure and high discharge capacity. As one of the most important and influential factors of discharge capacity, side slope can improve the hydraulic characteristics of weirs at special conditi...
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Lei Jiang, Mingjun Diao, Haomiao Sun and Yu Ren
The objective of this study was to evaluate the effect of the upstream angle on flow over a trapezoidal broad-crested weir based on numerical simulations using the open-source toolbox OpenFOAM. Eight trapezoidal broad-crested weir configurations with dif...
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Yuejun Chen, Zongfu Fu, Qingsheng Chen and Zhen Cui
Rectangular short-crested weirs are widely used for simple structure and high discharge capacity. As one of the most important and influential factors of discharge capacity, side slope can improve the hydraulic characteristics of weirs at special conditi...
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Yulong Hua, Fulin Cai, Jianxu Zhou, Wen Zhang
Pág. 1 - 13
This paper presents for the first time observations of a self-induced sloshing phenomenon in the water-retaining weir model. Fast Fourier Transform method is used to detect the dominant frequency for the sloshing water. The characteristics of the sloshin...
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Josie Mielhausen, Jaclyn M. H. Cockburn, Paul V. Villard and André-Marcel Baril
Vortex rock weirs (VRW) are often used in natural channel design applications to maintain channel form and function, provide physical channel stability, and enhance aquatic habitats. A balanced approach is required to address (often) conflicting goals of...
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Fabio Di Nunno, Francesco Granata, Francesco Parrino, Rudy Gargano and Giovanni de Marinis
One of the main sources of microplastics inside surface waters is represented by combined sewer overflows (CSOs), involving severe risks for the environment. The entry of microplastics into water bodies also depends on the characteristics of sewer divers...
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Joo Myun Park, Ralf Riedel, Hyun Hee Ju and Hee Chan Choi
Variabilities of biological communities in lower reaches of urban river systems are highly influenced by artificial constructions, alterations of flow regimes and episodic weather events. Impacts of estuary weirs on fish assemblages are particularly dist...
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Amir Ghaderi, Rasoul Daneshfaraz, Mehdi Dasineh and Silvia Di Francesco
In this work experimental and numerical investigations were carried out to study the influence of the geometric parameters of trapezoidal?triangular labyrinth weirs (TTLW) on the discharge coefficient, energy dissipation, and downstream flow regime, cons...
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Seong-Yeoul Yoo, Jin-Hyung Lee, Hyung-Jin Shin and Chan-Gi Park
This study evaluated the performance of a hybrid panel in an improved moveable weir after exposure to accelerated environmental climate conditions. When exposed to a river environment, corrosion problems on improved moveable weir steel panels can occur. ...
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Zhong Tian, Wei Wang, Ruidi Bai and Nan Li
The use of flaring gate piers (FGPs) along with finite crest-length weirs changes the shape of plunging jets and increases the efficiency of energy dissipation in some projects; however, the FGPs may affect the discharge capacity. In this study, the flow...
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Shicheng Li and Jianmin Zhang
Pooled stepped spillway is known for high aeration efficiency and energy dissipation, but the understanding for the effects of pool weir configuration on the flow properties and energy loss is relatively limited, so RNG
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Jacqueline Martha Malazarte, Hakyoung Lee, Hyun-Woo Kim and Yongsik Sin
The effects of weirs on fish and other biological communities have garnered considerable study, whereas the effects of weirs on community composition of toxic cyanobacteria have not yet been well documented. In this study, temporal and spatial variations...
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