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Relevant bibliographies by topics / TRIANGULAR LABYRINTH WEIR

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Academic literature on the topic 'TRIANGULAR LABYRINTH WEIR'

Author: Grafiati

Published: 11 September 2023

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Journal articles on the topic "TRIANGULAR LABYRINTH WEIR"

1

Hussain, Ruqiya Abed, Sawsan Abdullah Hassan, and Asmaa Abdul Jabbar Jamel. "Experimental Study on Flow over Triangular Labyrinth Weirs." International Journal of Design & Nature and Ecodynamics 17, no. 2 (2022): 249–55. http://dx.doi.org/10.18280/ijdne.170211.

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Recently, many research studies have focused on labyrinth weirs' hydraulic performance, especially as dependent on engineering features. In the current study, the hydraulic properties of flow over labyrinth triangular weirs models (from the upper perspective) with sharp crest have been experimentally studied and compare their efficiency with suppressed rectangular weirs (conventional weirs). Twelve fiberglass models are developed for this reason and tested in a 6m in length, 30cm in width, and 40cm height in laboratory flume, nine models were constructed for triangular labyrinth weirs and thre

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2

Aurahman, Tara H., Jehan M. Fattah Sheikh Suleimany, and Taban K. Hamad. "Determination of Discharge Coefficient for both Semicircular and Triangular Labyrinth Weirs." Polytechnic Journal 11, no. 2 (2021): 56–64. http://dx.doi.org/10.25156/ptj.v11n2y2021.pp56-64.

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A Labyrinth weir is a type of nonlinear weir folded in plan-view, with the ability to pass a large flow at low heads due to an increase in the effective length of the weir crest for a given channel width. The discharge coefficients (Cd) were experimentally determined for both semicircular and triangular labyrinth weirs of varying sidewall angles (α) under free-flow conditions using eight physical models. Dimensional analyses are conducted using the Buckingham π theorem to find the dependent and non-dependent variables. A nonlinear empirical equation was developed using (Statistical Package for

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3

Abbasi, Saeed, Sajjad Fatemi, Amir Ghaderi, and Silvia Di Francesco. "The Effect of Geometric Parameters of the Antivortex on a Triangular Labyrinth Side Weir." Water 13, no. 1 (2020): 14. http://dx.doi.org/10.3390/w13010014.

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Side weirs are important structural measures extensively used, for instance, for regulating water levels in rivers and canals. If the length of the opening is limited, the amount of water diverted out of the channel and the effective length can be increased by applying a labyrinth side weir. The present study deals with numerical simulations regarding the hydraulic performance of a labyrinth side weir with a triangular plan in single-cycle mode. Specifically, six different types of antivortexes embedded inside it and in various hydraulic conditions at different Froude numbers are analyzed. The

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4

Ghaderi, Amir, Rasoul Daneshfaraz, Mehdi Dasineh, and Silvia Di Francesco. "Energy Dissipation and Hydraulics of Flow over Trapezoidal–Triangular Labyrinth Weirs." Water 12, no. 7 (2020): 1992. http://dx.doi.org/10.3390/w12071992.

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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, considering two different orientations in labyrinth weir position respective to the reservoir discharge channel. To simulate the free flow surface, the volume of fluid (VOF) method, and the Renormalization Group (RNG) k-ε model turbulence were adopted in the FLOW-3D software. The flow over the labyrinth weir (in both orientations) is simulated as a

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5

Rustiati, N. B., M. G. Ishak, A. Tanga, and Z. G. Pali. "Influence of The Number of Trapezoidal Labyrinth Weir Cycles on The Hydraulic Characteristics of The Weir." IOP Conference Series: Earth and Environmental Science 1157, no. 1 (2023): 012051. http://dx.doi.org/10.1088/1755-1315/1157/1/012051.

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Abstract The labyrinth weir that is viewed from above has a zig-zag shape. The main objective is to extend the spillway so that the water level upstream of the weir is as low as possible or to increase the discharge capacity. The shapes of labyrinth weirs based upon cycle shape are triangular, trapezoidal, and rectangular. However, besides the shape of the spillway, several parameters affect its hydraulic characteristics. Therefore, this paper intends to explore the effect of the number of cycles on the trapezoidal labyrinth weir on the hydraulic characteristics of the weir, based on an experi

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6

Karimi, Sohrab, Hossein Bonakdari, and Azadeh Gholami. "Determination Discharge Capacity of Triangular Labyrinth Side Weir Using Multi-Layer Neural Network (ANN-MLP)." Current World Environment 10, Special-Issue1 (2015): 111–19. http://dx.doi.org/10.12944/cwe.10.special-issue1.16.

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statistic indexes have been used to assess the accuracy of the results. The results of the examinations indicate that using MLP model along with simultaneous use of dimensionless parameters for the purposes of estimating discharge coefficient: the ratio of water behind the weir to the channel width (h/b), ratio of weir crest length to weir height (L/W), relative Froude number (F=V/√(2Side weirs are used in open channels to control flood and the flow passing through it. Discharge capacity is one of the crucial hydraulic parameters of side weirs. The aim of this study is to determine the effect

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7

Li, Shicheng, James Yang, and Anders Ansell. "Evaluation of Pool-Type Fish Passage with Labyrinth Weirs." Sustainability 14, no. 3 (2022): 1098. http://dx.doi.org/10.3390/su14031098.

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Due to the construction of dams and sluices, habitat fragmentation of riverine species is an issue of concern in hydropower projects. An artificial fishway aims to restore flow connectivity and facilitate migration. As an alternative to the conventional layout with straight walls, labyrinth layouts are introduced, consisting of either triangular, trapezoidal, or rectangular weirs. Three-dimensional CFD simulations are performed to examine their influences on the fishway hydraulics. The labyrinth layouts exhibit an appreciable three-dimensional flow structure in a pool, featuring flow fluctuati

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8

Seyedjavad, Minasadat, Seyed Taghi Omid Naeeni, and Mojtaba Saneie. "Laboratory Investigation on Discharge Coefficient of Trapezoidal Piano Key Side Weirs." Civil Engineering Journal 5, no. 6 (2019): 1327–40. http://dx.doi.org/10.28991/cej-2019-03091335.

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A spillway is a hydraulic structure used to provide the controlled release of surplus waters and floods from a dam into a downstream area. A side weir is a multipurpose hydraulic structure which is constructed in water conveyance systems with a height lower than that of the canal wall. When the water surface level goes up, the side weir regulates the discharge and controls the water surface in the main canal. Besides, the side weir controls and diverts floods in dam reservoirs, diverts the flow and protects the structure against the river inundations. In this research, a laboratory investigati

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9

Carollo, Francesco Giuseppe, Vito Ferro, and Vincenzo Pampalone. "Testing the Outflow Process over a Triangular Labyrinth Weir." Journal of Irrigation and Drainage Engineering 143, no. 8 (2017): 06017007. http://dx.doi.org/10.1061/(asce)ir.1943-4774.0001198.

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10

Bijankhan, Mohammad, and Vito Ferro. "Dimensional analysis and stage-discharge relationship for weirs: a review." Journal of Agricultural Engineering 48, no. 1 (2017): 1–11. http://dx.doi.org/10.4081/jae.2017.575.

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Deducing the weir flow stage-discharge relationship is a classical hydraulic problem. In this regard Buckingham’s theorem of dimensional analysis can be used to find simple and accurate formulas to obtain the rating curves of different weir types. At first, in this review paper the rectangular weir that is a very common hydraulic structure is studied. It is indicated that the crest shape, approach channel width, obliquity (angle between the weir crest and the direction normal to the flow motion) and vertical inclination (pivot weir) are the key-parameters affecting the flow over the rectangula

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