Pub Date : 2023-11-07DOI: 10.1080/23249676.2023.2276948
Bernhard Becker, Jiyoung Kim, Elena Pummer
AbstractInflow forecasts are a basic pre-requisite to support decisions for anticipating reservoir operations. The fact that hydrological forecasts are uncertain, noting that reservoirs often fulfill multiple purposes, bears the risk of non-ideal reservoir operation. Optimization techniques can help to identify the best operational scheme under given inflow. To address the forecast uncertainty, operators can repeat optimization (moving horizon approach) and optimize for inflow forecast ensembles. This article aims to contribute to a better understanding of how the different methods work, how to interpret the results and what the effect of user choices on the optimization results is. The moving-horizon approach and three ensemble optimization methods were applied on a hydropower reservoir in Norway under flood conditions. The functional principle of each method is explained, and advantages and drawbacks of the different methods are discussed with the help of performance indicators.Keywords: Reservoir optimizationflood forecastingensemble forecastRTC-Toolsmodel predictive controlstochastic optimization Disclosure statementNo potential conflict of interest was reported by the author(s).
{"title":"Reservoir operations under uncertainty with moving-horizon approach and ensemble forecast optimization","authors":"Bernhard Becker, Jiyoung Kim, Elena Pummer","doi":"10.1080/23249676.2023.2276948","DOIUrl":"https://doi.org/10.1080/23249676.2023.2276948","url":null,"abstract":"AbstractInflow forecasts are a basic pre-requisite to support decisions for anticipating reservoir operations. The fact that hydrological forecasts are uncertain, noting that reservoirs often fulfill multiple purposes, bears the risk of non-ideal reservoir operation. Optimization techniques can help to identify the best operational scheme under given inflow. To address the forecast uncertainty, operators can repeat optimization (moving horizon approach) and optimize for inflow forecast ensembles. This article aims to contribute to a better understanding of how the different methods work, how to interpret the results and what the effect of user choices on the optimization results is. The moving-horizon approach and three ensemble optimization methods were applied on a hydropower reservoir in Norway under flood conditions. The functional principle of each method is explained, and advantages and drawbacks of the different methods are discussed with the help of performance indicators.Keywords: Reservoir optimizationflood forecastingensemble forecastRTC-Toolsmodel predictive controlstochastic optimization Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":"6 21","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135540480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-11DOI: 10.1080/23249676.2023.2263855
Rahim Shamsoddini, Bahador Abolpour, Yi Zhao
ABSTRACTMud filled by upstream surface runoff is one of the problems in maintaining the reservoir and dam. The material of upstream bed has a significant effect on the filling of reservoirs. In the present work, the filling rate of the reservoir from the upstream movable bed is investigated by using the Herschel–Bulkley model in both shear-thickening and shear-thinning modes. For this, a two-phase Newtonian-non Newtonian SPH code was developed that has special capabilities such as turbulence effects, surface tension, free surface, and particle displacement. This computational code is then evaluated by the experimental results in addition to finally used to investigate the main problem mentioned above. Five different models of movable beds with are considered, and the filling rate of the downstream tank with these materials is discussed. The results show that among the parameters of the Herschel–Bulkley model, the yield stress is more effective than other factors. Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementThe datasets generated during and analysed during the current study are available from the corresponding author on reasonable request.
{"title":"The effect of upstream soil type on the amount of catchments sediment","authors":"Rahim Shamsoddini, Bahador Abolpour, Yi Zhao","doi":"10.1080/23249676.2023.2263855","DOIUrl":"https://doi.org/10.1080/23249676.2023.2263855","url":null,"abstract":"ABSTRACTMud filled by upstream surface runoff is one of the problems in maintaining the reservoir and dam. The material of upstream bed has a significant effect on the filling of reservoirs. In the present work, the filling rate of the reservoir from the upstream movable bed is investigated by using the Herschel–Bulkley model in both shear-thickening and shear-thinning modes. For this, a two-phase Newtonian-non Newtonian SPH code was developed that has special capabilities such as turbulence effects, surface tension, free surface, and particle displacement. This computational code is then evaluated by the experimental results in addition to finally used to investigate the main problem mentioned above. Five different models of movable beds with are considered, and the filling rate of the downstream tank with these materials is discussed. The results show that among the parameters of the Herschel–Bulkley model, the yield stress is more effective than other factors. Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementThe datasets generated during and analysed during the current study are available from the corresponding author on reasonable request.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136210681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-09DOI: 10.1080/23249676.2023.2261368
Awangku Mohamad Mizan bin Pengiran Damit, Michael Lai Hing Fatt, Asmaal Muizz Sallehhin Bin Hj Mohammad Sultan, Shahriar Shams
AbstractThis study investigates the performance of green roofs with three different types of substrate, which are topsoil, a mix of 60% topsoil and 40% biochar, and a mix of 60% topsoil and 40% cocopeat in terms of saturated bulk density and water retention efficiency with a roof slope of 16.7°. The substrate has a thickness of 35 mm and was supported by a timber green roof prototype with Zoysia Japonica, Local cow grass and 9 o’clock flower as vegetation. It was also observed from the experiment that with respect to vegetation, the water retention efficiency is 50.3% (Zoysia Japonica), 49.3% (Local cow grass), and 57.4% (9 o’clock flower) with topsoil and cocopeat for a rainfall of 10 mm for a period of 20 min. Based on this research, a 9 o’clock flower with substrate combining topsoil and coco peat is recommended for green roofs in tropical climates. Disclosure statementNo potential conflict of interest was reported by the authors.
{"title":"Suitability of substrate and vegetation for tropical green roofs","authors":"Awangku Mohamad Mizan bin Pengiran Damit, Michael Lai Hing Fatt, Asmaal Muizz Sallehhin Bin Hj Mohammad Sultan, Shahriar Shams","doi":"10.1080/23249676.2023.2261368","DOIUrl":"https://doi.org/10.1080/23249676.2023.2261368","url":null,"abstract":"AbstractThis study investigates the performance of green roofs with three different types of substrate, which are topsoil, a mix of 60% topsoil and 40% biochar, and a mix of 60% topsoil and 40% cocopeat in terms of saturated bulk density and water retention efficiency with a roof slope of 16.7°. The substrate has a thickness of 35 mm and was supported by a timber green roof prototype with Zoysia Japonica, Local cow grass and 9 o’clock flower as vegetation. It was also observed from the experiment that with respect to vegetation, the water retention efficiency is 50.3% (Zoysia Japonica), 49.3% (Local cow grass), and 57.4% (9 o’clock flower) with topsoil and cocopeat for a rainfall of 10 mm for a period of 20 min. Based on this research, a 9 o’clock flower with substrate combining topsoil and coco peat is recommended for green roofs in tropical climates. Disclosure statementNo potential conflict of interest was reported by the authors.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135093985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-12DOI: 10.1080/23249676.2023.2256223
Dipika Dutta, Anil Kumar Misra, Amit Srivastava
The present study assesses the vulnerability of the river bank area most sensitive to erosion by combining the data obtained from existing literature and performing numerical simulation using finite element-based numerical code. Various geotechnical parameters, like average particle size (D50), Plasticity Index (PI), Elastic Modulus (E), Dry Unit Weight (γd) or Saturated Unit Weight (γsat), Coefficient of Permeability (k), Undrained Shear Strength (cu), Moisture Content (w%) and soil types based on the Unified Soil Classification System (USCS), were taken into account. Weighted Ranking Analysis (WRA) was performed based on the sensitivity of relevant geotechnical factors affecting bank erosion. The results indicate that the areas influenced by the Subansiri River (western bank) and the Brahmaputra River (southern bank) fall in the highly vulnerable zone category, while the Luhit and Kherkutia Suti Rivers (northern bank) fall in the moderately vulnerable category to river bank erosion.
{"title":"River bank erosion vulnerability demarcation based on the sensitivity analysis of geotechnical parameters: Majuli Island, India","authors":"Dipika Dutta, Anil Kumar Misra, Amit Srivastava","doi":"10.1080/23249676.2023.2256223","DOIUrl":"https://doi.org/10.1080/23249676.2023.2256223","url":null,"abstract":"The present study assesses the vulnerability of the river bank area most sensitive to erosion by combining the data obtained from existing literature and performing numerical simulation using finite element-based numerical code. Various geotechnical parameters, like average particle size (D50), Plasticity Index (PI), Elastic Modulus (E), Dry Unit Weight (γd) or Saturated Unit Weight (γsat), Coefficient of Permeability (k), Undrained Shear Strength (cu), Moisture Content (w%) and soil types based on the Unified Soil Classification System (USCS), were taken into account. Weighted Ranking Analysis (WRA) was performed based on the sensitivity of relevant geotechnical factors affecting bank erosion. The results indicate that the areas influenced by the Subansiri River (western bank) and the Brahmaputra River (southern bank) fall in the highly vulnerable zone category, while the Luhit and Kherkutia Suti Rivers (northern bank) fall in the moderately vulnerable category to river bank erosion.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135885293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-04DOI: 10.1080/23249676.2023.2253151
Lina Maria Osorio Olivos, A. M. Méllo Júnior, Gabriel Anísio dos Santos Soraes
{"title":"An approach for water allocation with a couple surface and groundwater model","authors":"Lina Maria Osorio Olivos, A. M. Méllo Júnior, Gabriel Anísio dos Santos Soraes","doi":"10.1080/23249676.2023.2253151","DOIUrl":"https://doi.org/10.1080/23249676.2023.2253151","url":null,"abstract":"","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47317387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-01DOI: 10.1080/23249676.2023.2252336
C. Riahi-Nezhad, P. Mohapatra, M. Hanif Chaudhry, Jasim Imran
{"title":"Steady flow at a breached levee","authors":"C. Riahi-Nezhad, P. Mohapatra, M. Hanif Chaudhry, Jasim Imran","doi":"10.1080/23249676.2023.2252336","DOIUrl":"https://doi.org/10.1080/23249676.2023.2252336","url":null,"abstract":"","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45662898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-08DOI: 10.1080/23249676.2023.2243810
A. Amini, K. O. Ahmed, Y. Parvizi
{"title":"The effects of check dams on the amount and pattern of flood","authors":"A. Amini, K. O. Ahmed, Y. Parvizi","doi":"10.1080/23249676.2023.2243810","DOIUrl":"https://doi.org/10.1080/23249676.2023.2243810","url":null,"abstract":"","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42851899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.1080/23249676.2023.2241349
Priscilla Kern, P. Uda, D. Franco, Thiago Arcari, L. Horn, Vinícius Ferreira, Guilherme Izidoro
{"title":"A low-cost system for calibrating methodologies used to measure GW-SW flow","authors":"Priscilla Kern, P. Uda, D. Franco, Thiago Arcari, L. Horn, Vinícius Ferreira, Guilherme Izidoro","doi":"10.1080/23249676.2023.2241349","DOIUrl":"https://doi.org/10.1080/23249676.2023.2241349","url":null,"abstract":"","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45158298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-21DOI: 10.1080/23249676.2023.2230894
S. Niranjan, L. Nandagiri
{"title":"Performance evaluation of simpler reference crop evapotranspiration estimation equations with and without local calibration","authors":"S. Niranjan, L. Nandagiri","doi":"10.1080/23249676.2023.2230894","DOIUrl":"https://doi.org/10.1080/23249676.2023.2230894","url":null,"abstract":"","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45107558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-13DOI: 10.1080/23249676.2023.2230892
Mehari Gebreyohannes Hiben, Admasu Gebeyehu Awoke, A. Ashenafi
{"title":"Estimation of rainfall and streamflow missing data under uncertainty for Nile basin headwaters: the case of Ghba catchments","authors":"Mehari Gebreyohannes Hiben, Admasu Gebeyehu Awoke, A. Ashenafi","doi":"10.1080/23249676.2023.2230892","DOIUrl":"https://doi.org/10.1080/23249676.2023.2230892","url":null,"abstract":"","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42463345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：