ISH Journal of Hydraulic Engineering最新文献_第9页

Leak detection in water distribution networks using deep learning 基于深度学习的配水网络泄漏检测

ISH Journal of Hydraulic Engineering Pub Date : 2022-10-17 DOI: 10.1080/09715010.2022.2134742

Hridik Punukollu, A. Vasan, K. Srinivasa Raju

引用次数: 0

Assessment of hydro-morpho dynamics of the Nile River confluence scour 尼罗河汇合处冲刷的水形态动力学评价

ISH Journal of Hydraulic Engineering Pub Date : 2022-10-16 DOI: 10.1080/09715010.2022.2134741

F. Samir, N. Badawy, Hossam El Sersawy

{"title":"Assessment of hydro-morpho dynamics of the Nile River confluence scour","authors":"F. Samir, N. Badawy, Hossam El Sersawy","doi":"10.1080/09715010.2022.2134741","DOIUrl":"https://doi.org/10.1080/09715010.2022.2134741","url":null,"abstract":"ABSTRACT Confluences of rivers are important component of river systems. Confluence scour is significant geomorphologically because it is a node in a channel network that controls sediment distribution, thus controlling the formation of channel migration. Nile River confluences take various shapes, such as downstream islands. Due to the construction of Aswan High Dam, major changes in hydrological characteristics downstream of the dam have affected river morphology, including the formation of islands. The purpose of this study is to investigate the hydrodynamic and morphological parameters for the Nile River confluences to provide an appropriate formula to predict confluence scour depth. For the current study, six confluence areas were selected. A numerical model was used to calculate the hydraulic characteristics of the Nile River. Geometric, morphological, and hydrodynamic analyses of selected confluences were performed in different years. Five confluence scour equations were applied to compute scour depths for the selected confluences. The scour depths for the specified confluences were calculated using five confluence scour equations. Field observations were compared to the calculated scour depths. The selected confluence scour equations didn’t have a satisfying performance for estimating the confluence scour depth in the Nile River. A new dimensionless confluence scour equation has been established.","PeriodicalId":38206,"journal":{"name":"ISH Journal of Hydraulic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84337287","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}

引用次数: 0

Impact of climate change on water availability in Bhagirathi River Basin, India 气候变化对印度Bhagirathi河流域水资源供应的影响

ISH Journal of Hydraulic Engineering Pub Date : 2022-09-30 DOI: 10.1080/09715010.2022.2128905

Tripti Dimri, Shamshad Ahmad, M. Sharif

{"title":"Impact of climate change on water availability in Bhagirathi River Basin, India","authors":"Tripti Dimri, Shamshad Ahmad, M. Sharif","doi":"10.1080/09715010.2022.2128905","DOIUrl":"https://doi.org/10.1080/09715010.2022.2128905","url":null,"abstract":"ABSTRACT The paper aims at simulating streamflow using Hydrologic Engineering Center Hydrological Modelling System (HEC-HMS) under different Representative Concentration Pathways (RCP’s) to access the impact of climate change on hydrological regime of Bhagirathi River at Tehri Dam. The input for the study is precipitation and temperature which are obtained from remote-sensing data. The temperature and precipitation data daily products are obtained from Tropical Rain Monitoring Mission (TRMM) and Atmospheric Infrared Sounder (AIRS) missions and the respective future anomalies were obtained from World Bank Climate Change Knowledge Portal (CCKP). The streamflow simulation is done for RCP’s 4.5 and 8.5 under the models csiro_mk3_6_0, bcc_csm1_1, ccsm4 and mri_cgcm3. The study found that the combination of remote-sensing data and HEC-HMS model has been successful in simulating streamflow in the region. The region will experience an increase in streamflow discharge under changing climate over the next coming years. The simulation also indicates that there will be a change in temporal distribution pattern of the discharge. Amidst these uncertainties, the predictions also give an insight into the planning and management of constructed or to be constructed hydraulic structures in the basin.","PeriodicalId":38206,"journal":{"name":"ISH Journal of Hydraulic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82604509","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}

引用次数: 0

Flood inundation modelling by a machine learning classifier 基于机器学习分类器的洪水淹没建模

ISH Journal of Hydraulic Engineering Pub Date : 2022-09-28 DOI: 10.1080/09715010.2022.2128906

M. Sedighkia, B. Datta

引用次数: 0

Assessment of sedimentation status and trap efficiency of Wyra reservoir 怀拉水库沉积状况及圈闭效率评价

ISH Journal of Hydraulic Engineering Pub Date : 2022-09-16 DOI: 10.1080/09715010.2022.2122879

Shyamsunder Pindi, K. Jayakumar

{"title":"Assessment of sedimentation status and trap efficiency of Wyra reservoir","authors":"Shyamsunder Pindi, K. Jayakumar","doi":"10.1080/09715010.2022.2122879","DOIUrl":"https://doi.org/10.1080/09715010.2022.2122879","url":null,"abstract":"ABSTRACT Sediment deposition is an inherent phenomenon of any reservoir which causes considerable storage loss thereby disturbing the economy of the community for which the reservoir is intended to serve. Failure to take adequate remedial measures to control sedimentation would result in huge loss in storage capacity. Present paper provides the analysis of the field studies using the hydrographic surveys which were conducted on the Wyra Project, a medium irrigation reservoir built across Wyra, a tributary of river Krishna. The surveys were conducted during the period when the reservoir receives good rains. The principal objectives of the study are to assess sedimentation status, annual sedimentation rate in the reservoir and to estimate the trap efficiency (Te) of the reservoir. The ‘Te’ is useful for predicting the remaining useful life span of the reservoir and the pattern of sediment deposition in the reservoir. Te is also useful in regulating the irrigation water, generation of hydroelectric power and management of sediment treatment plans. Analysis of the results showed that there is a loss of about 27.66 Mm3 (39.47%) in the storage capacity of the reservoir. The sedimentation rate was about 6.86 ha.m/100 km2/year, which is higher than what was considered at the planning stage.","PeriodicalId":38206,"journal":{"name":"ISH Journal of Hydraulic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74672935","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}

引用次数: 1

Analysis of groundwater age and flow fractions for source-sink assessments 用于源汇评价的地下水年龄和流量分量分析

ISH Journal of Hydraulic Engineering Pub Date : 2022-09-13 DOI: 10.1080/09715010.2022.2122877

N. Ayinippully Nalarajan, S. Govindarajan, I. Nambi

引用次数: 0

Comparison of multi-objective and single objective calibration for SWAT model: a case study on Musi river basin, India SWAT模型多目标与单目标标定的比较——以印度木斯河流域为例

ISH Journal of Hydraulic Engineering Pub Date : 2022-09-11 DOI: 10.1080/09715010.2022.2120369

Shashikanth Kulkarni, T. Anurag, M. Hussain, S. Prasanna, Vittal Hari

{"title":"Comparison of multi-objective and single objective calibration for SWAT model: a case study on Musi river basin, India","authors":"Shashikanth Kulkarni, T. Anurag, M. Hussain, S. Prasanna, Vittal Hari","doi":"10.1080/09715010.2022.2120369","DOIUrl":"https://doi.org/10.1080/09715010.2022.2120369","url":null,"abstract":"ABSTRACT Calibration of hydrological models for watersheds is critical considering the hydrological processes involved. The Soil and Water Assessment Tool (SWAT) is one such popular model and requires proper calibration, without which models have difficulty in proper simulation of runoff. The present study aims to utilize multi-objective calibration framework using Non-Dominated Genetic Algorithm- II (NSGA-II) and SWAT-Calibration Uncertainty Procedures (SWATCUP) for calibration. The study is conducted on Musi river basin located in India (10,000 Sq km) for seven years from 2013–2016. It includes an initial warm-up period of three years, the calibration period from 2015–2016, and validation period from 2014–2015. NSGA-II aims to optimize the multiple objective functions i.e. Nash Sutcliffe Efficiency (NSE) and Percentage Bias (PBias). The Monthly simulations results are expressed in terms of statistical parameters NSE, R2 and PBias for calibration and validation period. The results indicate satisfactory performance. Further, NSGA-II results are compared with SWATCUP (Sequential Uncertainty Fitting ver.2 (SUFI-2). We find NSGA-II performance is better than SWATCUP. The sensitive analysis indicates that CN2, GW_DELAY, GW_REVAP, ALPHA_BF, RCHRG_DP, and CH_K2 are very sensitive whereas SURLAG, ESCO, SLSUBBS, HRU_SLP are observed to be least sensitive.","PeriodicalId":38206,"journal":{"name":"ISH Journal of Hydraulic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86355628","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}

引用次数: 0

Innovative hydraulic design of some canal and river structures for economy and efficiency 为提高经济效益，对一些运河、河流构筑物进行了新颖的水力设计

ISH Journal of Hydraulic Engineering Pub Date : 2022-09-06 DOI: 10.1080/09715010.2022.2120368

S. Mazumder

{"title":"Innovative hydraulic design of some canal and river structures for economy and efficiency","authors":"S. Mazumder","doi":"10.1080/09715010.2022.2120368","DOIUrl":"https://doi.org/10.1080/09715010.2022.2120368","url":null,"abstract":"ABSTRACT Numerous hydraulic structures are to be provided in canals and rivers for storage, diversion and transport of water. Some innovative, economic and improved hydraulic design has been discussed. Transitions are to be provided in all canal structures wherever the canal is flumed to achieve economy. Most popular transition in the USA and Europe is Hinds transition. The author performed large numbers of experiments to introduce short curved transitions at entry and straight expansion at exit to attain higher efficiency and better performance. Energy dissipaters are usually provided with parallel side walls followed by transition structures to connect the stilling basin with normal channel section, resulting in huge cost of the structure. For low value of inflow Froude’s number (F1), the author introduced a new type of energy dissipater with straight diverging side walls starting from toe of the structure so that it functions as both energy dissipater and flow diffuser. Flow metering structures are needed for flow measurement in both rivers and canals. Parshall flumes may be free or submerged. The author invented a new proportional-type flow meter, by simultaneously fluming and raising the bed so that the flow remains free for all discharges in a given range.","PeriodicalId":38206,"journal":{"name":"ISH Journal of Hydraulic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89903428","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}

引用次数: 0

Impact of coastal structure on shorelines along the southeast and southwest coasts of india 沿海结构对印度东南和西南海岸海岸线的影响

ISH Journal of Hydraulic Engineering Pub Date : 2022-09-05 DOI: 10.1080/09715010.2022.2115319

V. Sundar, S. Sannasiraj, K. Murali, Vasanthakumar Singaravelu

{"title":"Impact of coastal structure on shorelines along the southeast and southwest coasts of india","authors":"V. Sundar, S. Sannasiraj, K. Murali, Vasanthakumar Singaravelu","doi":"10.1080/09715010.2022.2115319","DOIUrl":"https://doi.org/10.1080/09715010.2022.2115319","url":null,"abstract":"ABSTRACT This study aims to explore the site-specific impact of coastal structures on the stability of the shoreline. For this study, the shoreline data were collected with higher-order accuracy along a few vulnerable stretches of the coast in the vicinity of hard structures such as Seawalls, Groyne, Breakwater, and Training walls along the southeast and southwest coasts of India. All the field collected shoreline data were analysed with statistical measures using DSAS (Digital Shoreline Analysis System) tool of ArcGIS software. The presence of shore connected coastal structures dictates the sedimentation process in its purlieu. The observed average rate of erosion and accretion in the adjoining coastlines are −5.7 m/yr and +4.92 m/yr, respectively. The field measurements from the present study would provide an effective base for the planning and implementation of coastal structures near the studied area, as well as to adopt a better methodology for coastal impact assessment. Most of the well-planned and executed hard engineering structures have yielded desirable results and benefit for the local coastal communities.","PeriodicalId":38206,"journal":{"name":"ISH Journal of Hydraulic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74659375","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}

引用次数: 1

Laboratory investigation of flow and turbulent characteristics around permeable and impermeable groynes in a strongly curved meandering channel 强弯曲蜿蜒河道中透水和不透水沟槽周围流动和湍流特性的实验室研究

ISH Journal of Hydraulic Engineering Pub Date : 2022-08-29 DOI: 10.1080/09715010.2022.2115318

K. Indulekha, P. Jayasree, K. Balan

{"title":"Laboratory investigation of flow and turbulent characteristics around permeable and impermeable groynes in a strongly curved meandering channel","authors":"K. Indulekha, P. Jayasree, K. Balan","doi":"10.1080/09715010.2022.2115318","DOIUrl":"https://doi.org/10.1080/09715010.2022.2115318","url":null,"abstract":"ABSTRACT The study investigates the role of cocolog, an eco-friendly material, as groyne, in protecting the river banks in meandering channels. Laboratory experiments were conducted to compare the flow pattern and sediment dynamics in a mobile-bed meandering channel for cocolog (permeable) and impermeable groynes. It is observed that as the permeability increases, the vertical and transverse velocities are seen to be reduced in the groyne fields. The results also indicate that places of maximum scour depth display amplified velocity, turbulent intensity and turbulent kinetic energy. However, considerable reduction in these characteristics is being observed in the case of permeable groynes that have densities varying between 140 and 160 kg/m3. The eroded volume is seen to be reduced by 60% for permeable groynes of medium density compared to the tests done without groynes. Also impermeable groynes exhibit a wider distribution of the maximum values for scour depth, turbulence intensity and turbulent kinetic energy than that of permeable groynes. It is found that the cocolog groynes with suitable density (or permeability) can perform best in meandering channels by dampening the velocity and turbulence of the groyne fields.","PeriodicalId":38206,"journal":{"name":"ISH Journal of Hydraulic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75129888","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}

引用次数: 3