Weiyang Zhao, Wei-lin Xu, Han Wang, Rongcai Tang, Ruidi Bai
This work presents an experimental study of the fluctuating properties of hydraulic jump rollers for high-Froude-number and pre-aerated inflow conditions, to investigate the validity of empirical relationships in the literature that are derived typically from experiments for smaller Froude numbers and clear-water approach flows. The jump roller fluctuations are evaluated in terms of the dimensions of the roller surface profile, the fluctuation magnitudes and frequencies of the instantaneous jump toe positions and water elevations including at the tailwater surface, and the formation frequency and advection velocity of internal vortices in the shear layer. The effects of pre-aeration are found primarily in the length-scale properties such as jump length and surface fluctuation magnitudes, while the time-scale properties such as characteristic frequencies of the unsteady motions are not affected. Extrapolation of existing quantitative prediction of jump roller dynamic properties to high-Froude-number flow conditions should be performed carefully. An assessment of the fluctuating bubble counts within fixed time intervals yields close frequencies between the bubble grouping motions in the shear layer and the jump toe and tailwater wave motions, thus implying possible correlations between the roller surface deformations and air entrainment.
{"title":"Roller fluctuations of pre-aerated high-Froude-number hydraulic jumps","authors":"Weiyang Zhao, Wei-lin Xu, Han Wang, Rongcai Tang, Ruidi Bai","doi":"10.1680/jwama.21.00046","DOIUrl":"https://doi.org/10.1680/jwama.21.00046","url":null,"abstract":"This work presents an experimental study of the fluctuating properties of hydraulic jump rollers for high-Froude-number and pre-aerated inflow conditions, to investigate the validity of empirical relationships in the literature that are derived typically from experiments for smaller Froude numbers and clear-water approach flows. The jump roller fluctuations are evaluated in terms of the dimensions of the roller surface profile, the fluctuation magnitudes and frequencies of the instantaneous jump toe positions and water elevations including at the tailwater surface, and the formation frequency and advection velocity of internal vortices in the shear layer. The effects of pre-aeration are found primarily in the length-scale properties such as jump length and surface fluctuation magnitudes, while the time-scale properties such as characteristic frequencies of the unsteady motions are not affected. Extrapolation of existing quantitative prediction of jump roller dynamic properties to high-Froude-number flow conditions should be performed carefully. An assessment of the fluctuating bubble counts within fixed time intervals yields close frequencies between the bubble grouping motions in the shear layer and the jump toe and tailwater wave motions, thus implying possible correlations between the roller surface deformations and air entrainment.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"43 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73955221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Jung, Yong-Hoon Jeong, In-Kyun Jung, Sufang Kang, S. Yoon, D. Kwak
Owing to the recent developments in computer technology and nationally accumulated hydrology, land use, soil characteristics, flow and water quality monitoring data, high-level modelling results are required. However, as most catchments have a mix of urban and rural areas, it is challenging to apply one effective model. This study applied a hydrological simulation programme to a storm water management model for the Jeonju catchment, which has complex land-use characteristics, to determine the hydrological cycle of the catchment, analyse the river water quality and examine the structure of discharge pollutants. The linked model includes an analysis of the sewer pipes, which are the main path of hydrology and pollution loads in urban areas, a low-impact development application, a water circulation improvement technique and an initial storm water treatment facility installation project. This linked model will be very useful for guiding future urban water quality policy.
{"title":"Using hydrological simulation and a storm water model to simulate catchment water quality","authors":"K. Jung, Yong-Hoon Jeong, In-Kyun Jung, Sufang Kang, S. Yoon, D. Kwak","doi":"10.1680/jwama.21.00081","DOIUrl":"https://doi.org/10.1680/jwama.21.00081","url":null,"abstract":"Owing to the recent developments in computer technology and nationally accumulated hydrology, land use, soil characteristics, flow and water quality monitoring data, high-level modelling results are required. However, as most catchments have a mix of urban and rural areas, it is challenging to apply one effective model. This study applied a hydrological simulation programme to a storm water management model for the Jeonju catchment, which has complex land-use characteristics, to determine the hydrological cycle of the catchment, analyse the river water quality and examine the structure of discharge pollutants. The linked model includes an analysis of the sewer pipes, which are the main path of hydrology and pollution loads in urban areas, a low-impact development application, a water circulation improvement technique and an initial storm water treatment facility installation project. This linked model will be very useful for guiding future urban water quality policy.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"15 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87565163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The complex well function formulations developed for the unconfined aquifer systems make the determination of aquifer parameters difficult and inefficient via the classical methods. In addition, the dimensional dependency of the aquifer parameters as well as non-linear and non-convex fashion of inverse groundwater problems could make the stand-alone use of the metaheuristic algorithms inefficient in terms of computation time and effort, producing non-unique solutions. Therefore, a novel optimisation framework was established to interpret the pumping test data collected from an unconfined aquifer. The proposed approach works with four inputs which are based on the hybrid use of two non-dimensional physical and newly introduced two non-physical parameters. This study grasps the benefits of the simplicity of the traditional methods and the accuracy from Differential Evolution Algorithm (DE). The capability of the introduced scheme was broadly examined by several pumping test scenarios including hypothetical and the real field test datasets. A sensitivity analysis was also performed to understand the uncertainty associated with the estimated flow parameters. The results reveal that the proposed scheme powered by DE is able to achieve the outstanding estimation performance over the conventional methods and the implemented nature-inspired algorithms.
{"title":"A Novel Optimisation Framework for the Interpretation of Unconfined Aquifer Pumping Test Data","authors":"A. Ufuk Şahin","doi":"10.1680/jwama.21.00115","DOIUrl":"https://doi.org/10.1680/jwama.21.00115","url":null,"abstract":"The complex well function formulations developed for the unconfined aquifer systems make the determination of aquifer parameters difficult and inefficient via the classical methods. In addition, the dimensional dependency of the aquifer parameters as well as non-linear and non-convex fashion of inverse groundwater problems could make the stand-alone use of the metaheuristic algorithms inefficient in terms of computation time and effort, producing non-unique solutions. Therefore, a novel optimisation framework was established to interpret the pumping test data collected from an unconfined aquifer. The proposed approach works with four inputs which are based on the hybrid use of two non-dimensional physical and newly introduced two non-physical parameters. This study grasps the benefits of the simplicity of the traditional methods and the accuracy from Differential Evolution Algorithm (DE). The capability of the introduced scheme was broadly examined by several pumping test scenarios including hypothetical and the real field test datasets. A sensitivity analysis was also performed to understand the uncertainty associated with the estimated flow parameters. The results reveal that the proposed scheme powered by DE is able to achieve the outstanding estimation performance over the conventional methods and the implemented nature-inspired algorithms.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"17 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85929730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In previous literature, the flow characteristics of pressure waves in hydraulic experiments have demonstrated that there are two types of reflected waves: the same pressure vibration trend type and the opposite vibration trend type, with the equal pressure amplitude as the original wave. The reflection characteristics in the simulation must be consistent with those in the experiment. To determine reasonable boundary conditions, this paper focused on the simulation of pressure waves reflection under five combinations of boundary conditions using the computational fluid dynamics (CFD) method. Three three-dimensional simulation models were developed based on the k-ε turbulence model. Reflection characteristics were obtained under different boundaries. The result shows that the pressure boundary in the pipe could get reflected waves correctly. Reservoir is considered more accurate than the pressure boundary, which can reflect the slight fluctuation of the reflected wave. Both the wall boundary and the velocity boundary could be used to simulate the operation of the valve. However, if intercepting a part of the pipeline as objective, the reflected wave shows phase advance and pressure amplitude attenuation compared with that at the same position in the original pipeline. This paper is helpful for setting reasonable boundaries in pressure wave simulation.
{"title":"The Influence of Boundary Conditions on Pressure Wave Reflection Simulation at Pipe","authors":"Linkun Zhao, Jianqiang Deng, Xijian Guo, Z. Cao","doi":"10.1680/jwama.21.00126","DOIUrl":"https://doi.org/10.1680/jwama.21.00126","url":null,"abstract":"In previous literature, the flow characteristics of pressure waves in hydraulic experiments have demonstrated that there are two types of reflected waves: the same pressure vibration trend type and the opposite vibration trend type, with the equal pressure amplitude as the original wave. The reflection characteristics in the simulation must be consistent with those in the experiment. To determine reasonable boundary conditions, this paper focused on the simulation of pressure waves reflection under five combinations of boundary conditions using the computational fluid dynamics (CFD) method. Three three-dimensional simulation models were developed based on the k-ε turbulence model. Reflection characteristics were obtained under different boundaries. The result shows that the pressure boundary in the pipe could get reflected waves correctly. Reservoir is considered more accurate than the pressure boundary, which can reflect the slight fluctuation of the reflected wave. Both the wall boundary and the velocity boundary could be used to simulate the operation of the valve. However, if intercepting a part of the pipeline as objective, the reflected wave shows phase advance and pressure amplitude attenuation compared with that at the same position in the original pipeline. This paper is helpful for setting reasonable boundaries in pressure wave simulation.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"8 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90962248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The simultaneous use of cable and bed sill (CBS) scour countermeasures around a cylindrical pier was investigated. With the aim of finding the best combination of CBS in terms of scour depth reduction, 16 laboratory assessments of local scour were conducted. These experiments were also used to investigate the turbulent flow structure and sediment entrainment. The best combination of simultaneous CBS reduced the scour depth by about 34%. The flow structures around an unprotected pier (reference case) and for the best CBS configuration were compared by employing turbulent analysis methods. Two-dimensional bursting events were used to understand the stochastic nature of the flow structure around the pier. The turbulence characteristics and occurrence probabilities of bursting events confirmed the effect of the combination of CBS on reducing the scour depth. In addition, of all the bursting events, ejection events were found to have the highest transition probabilities.
{"title":"Effect of simultaneous use of cable and bed sill scour countermeasures around a cylindrical pier","authors":"Ehsan Gerami, Manouchehr Heidarpour, Reza Mohammadpour Ghalati","doi":"10.1680/jwama.21.00043","DOIUrl":"https://doi.org/10.1680/jwama.21.00043","url":null,"abstract":"The simultaneous use of cable and bed sill (CBS) scour countermeasures around a cylindrical pier was investigated. With the aim of finding the best combination of CBS in terms of scour depth reduction, 16 laboratory assessments of local scour were conducted. These experiments were also used to investigate the turbulent flow structure and sediment entrainment. The best combination of simultaneous CBS reduced the scour depth by about 34%. The flow structures around an unprotected pier (reference case) and for the best CBS configuration were compared by employing turbulent analysis methods. Two-dimensional bursting events were used to understand the stochastic nature of the flow structure around the pier. The turbulence characteristics and occurrence probabilities of bursting events confirmed the effect of the combination of CBS on reducing the scour depth. In addition, of all the bursting events, ejection events were found to have the highest transition probabilities.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"18 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sandra Vasin, Grzegorz Gzyl, Marina Bellotti, Loris Colombo, Marco Ghirardi, Goran Gjetvaj, Petr Kohout, Joerg Prestor, Susanne Rollwagen
A common challenge in many cities in Europe is endangerment of natural resources due to soil and water pollution. Despite extensive investigation and remediation measures over decades and current practices of environmental management, residues of pollutants persist in soil and groundwater, reducing the functionality of many urban areas. In complex hydrogeological systems, where contaminated plumes are overlapping and/or diffuse contamination is present, technical and administrative activities have to be thoroughly planned and executed in the long term to secure the recovery of groundwater quality. Communities need a management strategy (MS) to manage soil and groundwater contamination in urban areas, especially where contamination exceeds local scales but does not reach the national level. A MS drives administrations to understand hydrogeological system properties, define new, reachable target values and give practical guidance for the implementation of necessary measures. Implementation of a MS fosters the early involvement of key stakeholders and their contribution to the development of MS itself. The strategy has proven to be an appropriate and flexible tool for the transfer of scientific knowledge to the planning, coordination and implementation necessary for the remediation of large-scale groundwater contamination.
{"title":"Developing groundwater contaminant remediation strategies for seven regional aquifers","authors":"Sandra Vasin, Grzegorz Gzyl, Marina Bellotti, Loris Colombo, Marco Ghirardi, Goran Gjetvaj, Petr Kohout, Joerg Prestor, Susanne Rollwagen","doi":"10.1680/jwama.21.00032","DOIUrl":"https://doi.org/10.1680/jwama.21.00032","url":null,"abstract":"A common challenge in many cities in Europe is endangerment of natural resources due to soil and water pollution. Despite extensive investigation and remediation measures over decades and current practices of environmental management, residues of pollutants persist in soil and groundwater, reducing the functionality of many urban areas. In complex hydrogeological systems, where contaminated plumes are overlapping and/or diffuse contamination is present, technical and administrative activities have to be thoroughly planned and executed in the long term to secure the recovery of groundwater quality. Communities need a management strategy (MS) to manage soil and groundwater contamination in urban areas, especially where contamination exceeds local scales but does not reach the national level. A MS drives administrations to understand hydrogeological system properties, define new, reachable target values and give practical guidance for the implementation of necessary measures. Implementation of a MS fosters the early involvement of key stakeholders and their contribution to the development of MS itself. The strategy has proven to be an appropriate and flexible tool for the transfer of scientific knowledge to the planning, coordination and implementation necessary for the remediation of large-scale groundwater contamination.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"10 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study evaluated the efficiency of normal and drainage water for cyclic irrigation at a research farm at Shahid Chamran University of Ahvaz from 2019 to 2020. To this end, a 24×30 m farm (was selected and divided into 3 plots (A, B, and C). Corn, soybean, and sunflower were cultivated in plots A, B, and C, respectively, and drainage water was used for irrigation of the next plots (B and C). In plot B, a split-plot design was applied with randomized complete blocks with two treatments: irrigation type (Karun River water and drainage water) and urea fertilizer (100%, 75%, and 50% application) (with three replicates). The experiment design in plot C was similar to that of plot B except for 75% urea fertilizer. ANOVA results for soybean revealed that the interaction between irrigation type and urea levels had significant effects on growth yield and biological water productivity (P<0.01) and fresh leaf weight (P<0.05). ANOVA results for sunflower showed that the interaction between irrigation type and urea levels had significant effects on 100-seed weight, seed yield, and seed water productivity (P<0.05). The highest increase in productivity of the cyclic irrigation system for plot C was related to forage water productivity which increased from 0.768 to 2.603 kg.m−3. The water productivity of Karun River water in the total forage yield, total seed, and total biological yield for the cyclic irrigation system compared to conventional irrigation increased by 76.67%, 72.95%, and 75.45%, respectively. The lowest increase in water productivity from 0.276 to 0.821 (kg.m−3) was related to sunflower seed yield which was 2.97 times higher than conventional irrigation in the cyclic irrigation system. Overall, the data showed that compared to normal irrigation, cyclic irrigation with drainage water saved water and increased water productivity by 45.59% and 100%, respectively.
{"title":"The effectiveness of cyclic irrigation (by normal and drainage water) in yield, yield components, and water productivity of maize, soybean, and sunflower","authors":"Mohammad Azizi, M. Albaji, S. Nasab","doi":"10.1680/jwama.21.00059","DOIUrl":"https://doi.org/10.1680/jwama.21.00059","url":null,"abstract":"This study evaluated the efficiency of normal and drainage water for cyclic irrigation at a research farm at Shahid Chamran University of Ahvaz from 2019 to 2020. To this end, a 24×30 m farm (was selected and divided into 3 plots (A, B, and C). Corn, soybean, and sunflower were cultivated in plots A, B, and C, respectively, and drainage water was used for irrigation of the next plots (B and C). In plot B, a split-plot design was applied with randomized complete blocks with two treatments: irrigation type (Karun River water and drainage water) and urea fertilizer (100%, 75%, and 50% application) (with three replicates). The experiment design in plot C was similar to that of plot B except for 75% urea fertilizer. ANOVA results for soybean revealed that the interaction between irrigation type and urea levels had significant effects on growth yield and biological water productivity (P<0.01) and fresh leaf weight (P<0.05). ANOVA results for sunflower showed that the interaction between irrigation type and urea levels had significant effects on 100-seed weight, seed yield, and seed water productivity (P<0.05). The highest increase in productivity of the cyclic irrigation system for plot C was related to forage water productivity which increased from 0.768 to 2.603 kg.m−3. The water productivity of Karun River water in the total forage yield, total seed, and total biological yield for the cyclic irrigation system compared to conventional irrigation increased by 76.67%, 72.95%, and 75.45%, respectively. The lowest increase in water productivity from 0.276 to 0.821 (kg.m−3) was related to sunflower seed yield which was 2.97 times higher than conventional irrigation in the cyclic irrigation system. Overall, the data showed that compared to normal irrigation, cyclic irrigation with drainage water saved water and increased water productivity by 45.59% and 100%, respectively.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"20 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87423984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Building a chute aerator is an efficient measure to protect the chute bottom from cavitation damage in large flood-discharging hydraulic structures, but it sometimes fails to provide sufficient protection to the sidewalls. In this paper, basic air-water flow properties are investigated for discharge flows over an offset chute aerator model, with particular focus on the near-bottom and near-wall regions, for a range of discharge velocities over the offset brink 3.58 m/s < V < 8.02 m/s, Froude numbers 4.8 < Fr < 12.0, and Reynolds numbers 8.0×104 < Re < 9.2×104. Observations indicate little transverse variations in air-water flow properties except near the jet impact perimeter. The bottom air concentration and bubble frequency decrease at different rates downstream the impact point, and the influence of the Reynolds number on the bubble size and density should not be ignored. The shape of the clear-water core between the upper and lower aeration layers is identified with the aid of high-speed imaging and air concentration calibration against the wall. A formula is proposed to predict the narrowing of the jet core until its ending position.
在大型泄洪水工建筑物中，设置溜槽曝气器是保护溜槽底部不受空化破坏的有效措施，但有时对侧壁的保护不够。本文研究了偏置溜槽增氧机模型的基本空气-水流动特性，特别关注近底部和近壁面区域，偏置边缘上的排放速度范围为3.58 m/s < V < 8.02 m/s，弗劳德数4.8 < Fr < 12.0，雷诺数8.0×104 < Re < 9.2×104。观测表明，除了在射流撞击周界附近，空气-水流动特性的横向变化很小。在撞击点下游，底部空气浓度和气泡频率以不同速率下降，雷诺数对气泡大小和密度的影响不容忽视。借助高速成像和壁面空气浓度标定，确定了上下曝气层之间的清水岩心形状。提出了一种预测射流核心缩窄直至其结束位置的公式。
{"title":"Bottom and side-wall aeration performance of an offset aerator in a flood discharge chute","authors":"Xuechun Liu, Ruidi Bai, Shan-jun Liu, Zhong Tian","doi":"10.1680/jwama.21.00053","DOIUrl":"https://doi.org/10.1680/jwama.21.00053","url":null,"abstract":"Building a chute aerator is an efficient measure to protect the chute bottom from cavitation damage in large flood-discharging hydraulic structures, but it sometimes fails to provide sufficient protection to the sidewalls. In this paper, basic air-water flow properties are investigated for discharge flows over an offset chute aerator model, with particular focus on the near-bottom and near-wall regions, for a range of discharge velocities over the offset brink 3.58 m/s < V < 8.02 m/s, Froude numbers 4.8 < Fr < 12.0, and Reynolds numbers 8.0×104 < Re < 9.2×104. Observations indicate little transverse variations in air-water flow properties except near the jet impact perimeter. The bottom air concentration and bubble frequency decrease at different rates downstream the impact point, and the influence of the Reynolds number on the bubble size and density should not be ignored. The shape of the clear-water core between the upper and lower aeration layers is identified with the aid of high-speed imaging and air concentration calibration against the wall. A formula is proposed to predict the narrowing of the jet core until its ending position.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"21 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83241824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optimal reservoir operation has become a challenging problem due to streamflow uncertainties. Frameworks for optimal reservoir operation play a vital role in the management of water resources. Effective and judicious utilization of water from reservoirs helps to manage water deficit periods. The main objective in reservoir optimization is to design operating rules that can be used to derive real-time decisions on reservoir release. In this study a metaheuristic optimization algorithm, Parametric Elitist Cuckoo Search Algorithm (PECSA) based on basic Cuckoo Search Algorithm, has been applied for developing optimal operation decisions for Ravishankar Sagar reservoir in Mahanadi Reservoir Project complex, India. To evaluate the performance of the improved PECSA, the results obtained by this method has been compared with another heuristic method Time Variant Elitist Mutation Particle Swarm Optimization (TVEMPSO) algorithm and also with the standard CSA and PSO methods. PECSA improves system operation and has outperformed other methods in terms of achieving faster convergence rate. Besides, PECSA has also shown minor variations in optimal pattern of release policies with those obtained using the standard CSA. Finally, implication of the results and suggestion for further research are discussed.
{"title":"Optimal Reservoir Operation using Parametric Elitist Cuckoo Search Algorithm","authors":"M. Trivedi, R. Shrivastava","doi":"10.1680/jwama.21.00057","DOIUrl":"https://doi.org/10.1680/jwama.21.00057","url":null,"abstract":"Optimal reservoir operation has become a challenging problem due to streamflow uncertainties. Frameworks for optimal reservoir operation play a vital role in the management of water resources. Effective and judicious utilization of water from reservoirs helps to manage water deficit periods. The main objective in reservoir optimization is to design operating rules that can be used to derive real-time decisions on reservoir release. In this study a metaheuristic optimization algorithm, Parametric Elitist Cuckoo Search Algorithm (PECSA) based on basic Cuckoo Search Algorithm, has been applied for developing optimal operation decisions for Ravishankar Sagar reservoir in Mahanadi Reservoir Project complex, India. To evaluate the performance of the improved PECSA, the results obtained by this method has been compared with another heuristic method Time Variant Elitist Mutation Particle Swarm Optimization (TVEMPSO) algorithm and also with the standard CSA and PSO methods. PECSA improves system operation and has outperformed other methods in terms of achieving faster convergence rate. Besides, PECSA has also shown minor variations in optimal pattern of release policies with those obtained using the standard CSA. Finally, implication of the results and suggestion for further research are discussed.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"34 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82510490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-01DOI: 10.1680/jwama.2022.175.3.109
L. Beevers, M. Pregnolato
{"title":"Editorial: Reflecting on progress in water management adaptation to climate change","authors":"L. Beevers, M. Pregnolato","doi":"10.1680/jwama.2022.175.3.109","DOIUrl":"https://doi.org/10.1680/jwama.2022.175.3.109","url":null,"abstract":"","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"152 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79475958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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