The Experts below are selected from a list of 12096 Experts worldwide ranked by ideXlab platform
Prabhata K. Swamee - One of the best experts on this subject based on the ideXlab platform.
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Discharge Characteristics of Skew Sluice Gates
Journal of Irrigation and Drainage Engineering, 2000Co-Authors: Prabhata K. Swamee, Santosh K. Pathak, Talib Mansoor, Chandra Shekhar P. OjhaAbstract:Discharge characteristics for a skew Sluice gate, ranging between the two extreme cases of a side Sluice gate and a normal Sluice gate, have been explored. The concept of an elementary discharge coefficient was utilized for obtaining the discharge through a skew Sluice gate. Based on experimental investigation, equations for elementary discharge coefficients for skew Sluice gates in free- and submerged-flow conditions were obtained. These equations describe the behavior of the elementary discharge coefficients for large ranges of the upstream water depth to gate opening ratio, tailwater depth to gate opening ratio, and skew angle. Using these equations, it is possible to obtain the discharge passing through a bifold skew Sluice gate and it is expected that these equations will be useful to obtain the discharge through Sluice gates having any plan shape.
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Analysis of Rectangular Side Sluice Gate
Journal of Irrigation and Drainage Engineering-asce, 1993Co-Authors: Prabhata K. Swamee, Santosh K. PathakAbstract:A side Sluice gate is a flow‐regulation device widely used in irrigation works for diverting the flow from a main channel to a secondary channel. The discharge of a side Sluice gate may be obtained through the concept of an elementary discharge coefficient for an elementary strip along the gate length. Similar to the case of a normal Sluice gate, the elementary discharge coefficient for a side Sluice gate has been found to be a function of channel flow depth to the gate opening ratio for free‐flow conditions. It depends on an additional parameter, namely, the ratio of the crest width to the gate opening for submerged‐flow conditions. For a broad‐crested side Sluice gate, the discharge coefficient involves still one more parameter: the ratio of the crest width to the gate opening.
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Analysis of Rectangular Side Sluice Gate
Journal of Irrigation and Drainage Engineering, 1993Co-Authors: Prabhata K. Swamee, Santosh K. Pathak, Masoud S. AliAbstract:A side Sluice gate is a flowregulation device widely used in irrigation works for diverting the flow from a main channel to a secondary channel. The discharge of a side Sluice gate may be obtained ...
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Sluice gate discharge equations
Journal of Irrigation and Drainage Engineering-asce, 1992Co-Authors: Prabhata K. SwameeAbstract:Sluice‐gate discharge coefficient is an involved function of geometric and hydraulic parameters. For free flow, it is related to upstream depth and gate opening, whereas for submerged flow, in addition to these parameters, it depends on tail‐water depth. The present practice of discharge coefficient determination is from curves drawn relating discharge coefficient and upstream‐depth gate‐opening ratio with tail‐water‐depth gate‐opening ratio being the third parameter for submerged flow. This method lends itself to sufficient error of judgment due to interpolation between two types of curves. Furthermore, the graphical information cannot be used for any analytical and/or numerical method for flow control and flow profile determination. In this paper high‐accuracy discharge coefficient equations for free and submerged flows have been developed along with the criterion for determination of free and submerged flow. Procedures for solution of various gate‐opening problems have also been given.
Santosh K. Pathak - One of the best experts on this subject based on the ideXlab platform.
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Discharge Characteristics of Skew Sluice Gates
Journal of Irrigation and Drainage Engineering, 2000Co-Authors: Prabhata K. Swamee, Santosh K. Pathak, Talib Mansoor, Chandra Shekhar P. OjhaAbstract:Discharge characteristics for a skew Sluice gate, ranging between the two extreme cases of a side Sluice gate and a normal Sluice gate, have been explored. The concept of an elementary discharge coefficient was utilized for obtaining the discharge through a skew Sluice gate. Based on experimental investigation, equations for elementary discharge coefficients for skew Sluice gates in free- and submerged-flow conditions were obtained. These equations describe the behavior of the elementary discharge coefficients for large ranges of the upstream water depth to gate opening ratio, tailwater depth to gate opening ratio, and skew angle. Using these equations, it is possible to obtain the discharge passing through a bifold skew Sluice gate and it is expected that these equations will be useful to obtain the discharge through Sluice gates having any plan shape.
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Analysis of Rectangular Side Sluice Gate
Journal of Irrigation and Drainage Engineering-asce, 1993Co-Authors: Prabhata K. Swamee, Santosh K. PathakAbstract:A side Sluice gate is a flow‐regulation device widely used in irrigation works for diverting the flow from a main channel to a secondary channel. The discharge of a side Sluice gate may be obtained through the concept of an elementary discharge coefficient for an elementary strip along the gate length. Similar to the case of a normal Sluice gate, the elementary discharge coefficient for a side Sluice gate has been found to be a function of channel flow depth to the gate opening ratio for free‐flow conditions. It depends on an additional parameter, namely, the ratio of the crest width to the gate opening for submerged‐flow conditions. For a broad‐crested side Sluice gate, the discharge coefficient involves still one more parameter: the ratio of the crest width to the gate opening.
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Analysis of Rectangular Side Sluice Gate
Journal of Irrigation and Drainage Engineering, 1993Co-Authors: Prabhata K. Swamee, Santosh K. Pathak, Masoud S. AliAbstract:A side Sluice gate is a flowregulation device widely used in irrigation works for diverting the flow from a main channel to a secondary channel. The discharge of a side Sluice gate may be obtained ...
Sukjin Ahn - One of the best experts on this subject based on the ideXlab platform.
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experimental investigation on the relationship between Sluice caisson shape of tidal power plant and the water discharge capability
Renewable Energy, 2010Co-Authors: Dal Soo Lee, Woosun Park, Hyusang Cho, Dukgu Kim, Hyunmin Eom, Sukjin AhnAbstract:The change of water discharge capability of the Sluice caisson of tidal power plant according to the change of geometrical shape of the Sluice caisson was investigated by performing laboratory experiments. The major design parameters that constitute general shape of the Sluice caisson were deduced and a total of 32 different shapes of Sluice caisson models were subjected to the hydraulic experiments. For every Sluice caisson model, the water discharge capability was estimated with five different flow rates and three different water level conditions. The experiments were carried out in an open channel flume with a great care to measure flow rate and water level accurately, which are key physical quantities in estimating the water discharge capability of the Sluice caisson models. By analyzing the experimental results, influence of the respective design parameters on the performance of the Sluice caisson was examined and the general guidelines to enhance the water discharge capability were suggested. The discharge coefficient of the best Sluice caisson model ranged from 2.3 to 3.1 depending on the experimental conditions, which is far higher than the values that were adopted in the past feasibility studies in Korea.
Masoud S. Ali - One of the best experts on this subject based on the ideXlab platform.
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Analysis of Rectangular Side Sluice Gate
Journal of Irrigation and Drainage Engineering, 1993Co-Authors: Prabhata K. Swamee, Santosh K. Pathak, Masoud S. AliAbstract:A side Sluice gate is a flowregulation device widely used in irrigation works for diverting the flow from a main channel to a secondary channel. The discharge of a side Sluice gate may be obtained ...
Siow Yong Lim - One of the best experts on this subject based on the ideXlab platform.
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prediction of local scour depth downstream of Sluice gates using data driven models
ISH Journal of Hydraulic Engineering, 2017Co-Authors: Mohammad Najafzadeh, Ali Tafarojnoruz, Siow Yong LimAbstract:AbstractNumerous investigations have already been conducted to characterize the effects of influencing parameters on scouring process in order to derive an accurate predictive equation of local scour depth downstream of a Sluice gate. However, due to the complexity of the scour phenomena, available empirical equations, originally derived on the basis of regressive methods, do not always offer accurate scour depth prediction. Previous studies have clarified that artificial intelligence techniques may be alternatively considered to solve a complex phenomenon like local scouring. In present study, Gene-Expression Programming, Model Tree (MT), and Evolutionary Polynomial Regression approaches, which are among the newest artificial intelligence approaches, were evaluated for prediction of local scour depth downstream of Sluice gates with an apron. The input variables affecting the scour depth are sediment size and its gradation, apron length, Sluice gate opening, and the flow conditions downstream of the sluic...
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Application of improved neuro-fuzzy GMDH to predict scour depth at Sluice gates
Earth Science Informatics, 2015Co-Authors: Mohammad Najafzadeh, Siow Yong LimAbstract:An improved neuro-fuzzy based group method of data handling using the particle swarm optimization (NF-GMDH-PSO) is developed as an adaptive learning network to predict the localized scour downstream of a Sluice gate with an apron. . The input characteristic parameters affecting the scour depth are the sediment size and its gradation, apron length, Sluice gate opening, and the flow conditions upstream and downstream of the Sluice gate. Six non-dimensional parameters were yielded to define a functional relationship between the input and output variables. The training and testing of the NF-GMDH network are performed using published scour data from the literature. The efficiency of the training stages for the NF-GMDH-PSO is investigated. The testing results for the NF-GMDH network are compared with the traditional approaches based on regression method. A sensitivity analysis is carried out to assign the most significant parameter for the scour prediction. The results showed that the NF-GMDH-PSO network produced lower error in scour prediction than all other models.
