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Effect on sediment delivery ratio by changes in land use land cover and construction of hydraulic structures at sub basin scale 土地利用-土地覆盖变化和次流域尺度水工建筑物建设对输沙率的影响
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-06-03 DOI: 10.1080/23249676.2021.1932617
B. R. Joshi, S. Yadav
{"title":"Effect on sediment delivery ratio by changes in land use land cover and construction of hydraulic structures at sub basin scale","authors":"B. R. Joshi, S. Yadav","doi":"10.1080/23249676.2021.1932617","DOIUrl":"https://doi.org/10.1080/23249676.2021.1932617","url":null,"abstract":"Many areas of the world are particularly vulnerable to sedimentation. Determining the amount of soil erosion and sediment rate from watersheds would be the first step in reducing sedimentation. Soil and Water Analysis Tool (SWAT) based on Geographic Information System (GIS) was used to determine sediment yield and Sediment Delivery Ratio (SDR). This paper’s main objective is to assess the impact of land-use change on SDR at the sub-basin scale. Land-use changes indicated a vast reduction of 19% in the forest area, which causes an increase in agricultural land and commercial land. Therefore, SDR must be increased, but the study area’s average SDR trend is decreasing from 1985 to 2015. But, sub-basin-scale, sub-basins no. 17, 18, and 24 are decreasing from 1985 to 2005 and increasing from 2005 to 2015.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1932617","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47296681","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
Drought monitoring in Ceyhan Basin, Turkey 土耳其杰伊汉盆地的干旱监测
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-06-01 DOI: 10.1080/23249676.2021.1932616
M. Yuce, Musa Eşit
{"title":"Drought monitoring in Ceyhan Basin, Turkey","authors":"M. Yuce, Musa Eşit","doi":"10.1080/23249676.2021.1932616","DOIUrl":"https://doi.org/10.1080/23249676.2021.1932616","url":null,"abstract":"Various drought indices are utilized to monitor and detect drought and its probable effects. Hydro-climate parameters, including rainfall, temperature and soil moisture, are important in identifying drought phenomena. In this study, 10 notable indices (SPI, SPEI, scPDSI, CZI, MCZI, RAI, RDI, DI, PNI and ZI) have been employed to monitor drought events in the Ceyhan Basin, Turkey. The applicability of these indices and their performances corresponding to historical droughts were examined by employing eight meteorological stations. Apart from the scPDSI, other indices have shown a strong correlation for 1-month time scale, and at different time scales of 3, 6, 9 and 12 months, only the correlation between the SPI, SPEI and RDI was observed to be high. While the SPI, SPEI and RDI have demonstrated a strong correlation in perceiving drought severity categories for 1-month time scale, for longer time scales the correlation of the SPEI with the other two indices was low.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1932616","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42854822","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: 21
Application of cascade feed forward neural network to predict coagulant dose 级联前馈神经网络在混凝剂剂量预测中的应用
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-05-31 DOI: 10.1080/23249676.2021.1927210
D. V. Wadkar, R. Karale, M. Wagh
{"title":"Application of cascade feed forward neural network to predict coagulant dose","authors":"D. V. Wadkar, R. Karale, M. Wagh","doi":"10.1080/23249676.2021.1927210","DOIUrl":"https://doi.org/10.1080/23249676.2021.1927210","url":null,"abstract":"Inlet water quality fluctuations affect mainly coagulant dose, and outlet water quality of the water treatment plant (WTP). Many complex physical and chemical processes are involved in WTP and water distribution networks (WDN). These technologies show non-linear behavior, which is challenging to be described by linear mathematical models. Thus, there is a need to develop prediction models for coagulation dose. The present study involves the application of cascade feed-forward neural networks (CFFNN) to predict coagulant dose. CFFNN Model was developed by using the Levenberg-Marquardt Training Algorithm and Bayesian Regularization Training Algorithm to predict coagulant dose. During the development of these models, hidden nodes are varied from 15 to 60, and R is found between 0.914 and 0.947. The best results were obtained by the CFFNN model using the Bayesian Regularization Training Algorithm (CFNNCD2) with hidden node 40, where R = 0.945 for training and 0.947 for testing.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1927210","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41300034","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: 10
Techno-economic comparison of three different types of powering systems 三种不同类型动力系统的技术经济比较
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-05-11 DOI: 10.1080/23249676.2021.1919227
Albashir K. Elfaqih, Said O. Belhaj
{"title":"Techno-economic comparison of three different types of powering systems","authors":"Albashir K. Elfaqih, Said O. Belhaj","doi":"10.1080/23249676.2021.1919227","DOIUrl":"https://doi.org/10.1080/23249676.2021.1919227","url":null,"abstract":"Economic and environmental factors play a crucial role in the transitioning of water desalination technologies from conventional energy sources to alternative sources, solar energy being in the forefront. This paper investigates the technical and economic merits of using three different types of powering systems: the National Electric Grid (Grid), a Standalone (Off-Grid) Photovoltaic (PV) System, and a Grid Connected (On-Grid) PV System to power a 100 m³/day reverse osmosis seawater desalination plant in the Mediterranean city of Tripoli-Libya. The cost analysis of product water showed significant savings in favour of On-Grid PV as a power source. Also, in this paper, the effect of interest rate on the cost of the water produced was studied. An additional finding of this paper was the impact of Off-Grid PV system oversizing to account for times of low solar irradiance on the level of utilization of the total electricity produced.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1919227","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41573118","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: 2
Performance evaluation of technical aspects of ex-situ rainwater harvesting systems at Wag-Lasta, Northern, Ethiopia 埃塞俄比亚北部瓦格-拉斯塔迁地雨水收集系统技术方面的性能评价
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-05-02 DOI: 10.1080/23249676.2021.1919572
A. Wale, Messay Abera, Gashaw Beza
{"title":"Performance evaluation of technical aspects of ex-situ rainwater harvesting systems at Wag-Lasta, Northern, Ethiopia","authors":"A. Wale, Messay Abera, Gashaw Beza","doi":"10.1080/23249676.2021.1919572","DOIUrl":"https://doi.org/10.1080/23249676.2021.1919572","url":null,"abstract":"The most severe constraints for agriculture are water shortages in semi-arid areas of Northern Ethiopia. Rainfall is extremely variable; therefore, it is necessary to harvest rainwater to safeguard improved crop production. The objective of the study is to characterize, identifying problems and evaluating the performance of existing RWH systems in the Wag-Lasta areas. Tweleve RWH ponds were selected from six kebeles in the study area. Primary and secondary data were collected and evaluated using descriptive statistics to assess the technical performance of water harvesting ponds by field observation, direct measurements, and interviews with zone, woreda, kebele experts, and owners. The technical performance assessment showed that the collected runoff and system efficiency were negligible for the total rainwater catchment area. The problems in a portion of the non-functional ponds had found to be poor site selection, lack of maintenance, and standardization of techniques, and some of them were efficient with low performance.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1919572","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42899668","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
Influence of suction and collar on reducing local scouring in cylindrical pier 吸力和轴环对减小圆柱墩局部冲刷的影响
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-05-02 DOI: 10.1080/23249676.2021.1919225
Ehsan Afaridegan, M. Heidarpour, M. Goodarzi, Bashir Fallahi
{"title":"Influence of suction and collar on reducing local scouring in cylindrical pier","authors":"Ehsan Afaridegan, M. Heidarpour, M. Goodarzi, Bashir Fallahi","doi":"10.1080/23249676.2021.1919225","DOIUrl":"https://doi.org/10.1080/23249676.2021.1919225","url":null,"abstract":"Bridges are among the most important structures in river engineering. One of the significant causes of the destruction of bridges is local scouring around the piers. In the present research, collar and suction system both employed the upstream of the pier against local scouring. In separate experiments, the collar models were examined in different dimensions and the suction system was considered at different depth levels. Then, the combined collar-suction model was tested. The results showed that the suction system at the bed level (Z/h = 0) with the suction rate of (Qs/Q = 1.7%) had 51% efficiency; the 3D-length, 2D-width collar yielded 59% efficiency; and the combined suction-collar model had 94% efficiency in reducing local scouring of the pier by decreasing down-flow velocity, as well as the Reynolds Shear Stresses (RSSs) and Turbulence Kinetic Energy (TKE).","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1919225","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45424057","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: 2
Time evolution of the scour induced by a ski jump jet 滑跃射流冲刷的时间演化
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-05-02 DOI: 10.1080/23249676.2021.1919226
R. Santos, E. Carvalho, M. M. C. L. Lima, R. Aleixo
{"title":"Time evolution of the scour induced by a ski jump jet","authors":"R. Santos, E. Carvalho, M. M. C. L. Lima, R. Aleixo","doi":"10.1080/23249676.2021.1919226","DOIUrl":"https://doi.org/10.1080/23249676.2021.1919226","url":null,"abstract":"Scour studies are often made at the equilibrium stage when the scour hole is stabilized and no more changes in the scour geometry occur. However, studying the scour time evolution is critical to better understand the erosion process and the main factors that control it in the short and long terms. Scour is a destructive process, therefore, in the absence of non-intrusive and real-time measurement techniques, an experimental analysis of time evolution of scour can be a time-consuming process as, for each considered instant, detailed measurements of the bed geometry must be taken. In this paper, two different strategies are applied to analyse the scour time evolution. Their results are compared and discussed. From the obtained experimental results, empirical relations between different variables were proposed. Further analysis provided scale relationships to adimensionalize the time evolution profiles. To measure the scour geometry, a structure from motion technique is employed.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1919226","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43393807","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
Application of HEC-RAS and HEC-LifeSim models for flood risk assessment HEC-RAS和HEC LifeSim模型在洪水风险评估中的应用
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-04-18 DOI: 10.1080/23249676.2021.1908183
Ali El Bilali, A. Taleb, Imane Boutahri
{"title":"Application of HEC-RAS and HEC-LifeSim models for flood risk assessment","authors":"Ali El Bilali, A. Taleb, Imane Boutahri","doi":"10.1080/23249676.2021.1908183","DOIUrl":"https://doi.org/10.1080/23249676.2021.1908183","url":null,"abstract":"For two decades, the flood risk has become a challenge for all authorities in the world. However, its mitigation can be conducted through structural and non-structural measures. The non-structural measures include the flood risk assessment and management, the evacuating process during the flood, and land use management. This case study used HEC-RAS and HEC-LifeSim models to assess the potential flood risk, Mohammedia (Morocco), associated with Malleh dam rupture. The HEC-RAS2D Hydraulic model was calibrated for one flood and its sensitivity to the Manning was analysed. Thus, the potential life loss simulation was conducted using the socio-economic and Hydraulic data using HEC-LifeSim according to two alternatives of the evacuation process. The results showed that traffic management during floods decreases the probability of life loss. Overall results showed that the city is vulnerable to the disaster simulated in terms of road network capacity that can be used for the evacuation process.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1908183","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41248445","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: 15
Scour morphology downstream of submerged block ramps 淹没式块体坡道下游冲刷形态
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-04-10 DOI: 10.1080/23249676.2021.1908918
Mahdi Esmaeili Varaki, S. Mahmoudi Kurdistani, Gita Noormohammadi
{"title":"Scour morphology downstream of submerged block ramps","authors":"Mahdi Esmaeili Varaki, S. Mahmoudi Kurdistani, Gita Noormohammadi","doi":"10.1080/23249676.2021.1908918","DOIUrl":"https://doi.org/10.1080/23249676.2021.1908918","url":null,"abstract":"In this study, the effects of geometric parameters, such as the ramp roughness size and the ramp slope on the scour parameters downstream of block ramps, are experimentally investigated for different hydraulic conditions. Scour parameters, such as the maximum scour depth and length and the maximum ridge height and length, are evaluated. Experiments are conducted in clear water conditions (no sediment transport) for different gravel ramp slopes in which different critical flow depths and tailwater depths are examined. The results indicate that the maximum scour depth downstream of a block ramp for different bottom slopes is directly affected by the tailwater depth, independent of the critical flow depth; the scour depth decreases by increasing tailwater depth. A comparison of the results indicates that increasing the roughness of the block ramp leads to a reduction in the maximum scour depth.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2021.1908918","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49341591","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
Calibration of the continuous water model based on the NRW patterns 基于北威河模式的连续水模式定标
IF 1.2
Journal of Applied Water Engineering and Research Pub Date : 2021-04-10 DOI: 10.1080/23249676.2020.1844603
Nader Torkaman, H. Ahmadi, B. Aminnejad
{"title":"Calibration of the continuous water model based on the NRW patterns","authors":"Nader Torkaman, H. Ahmadi, B. Aminnejad","doi":"10.1080/23249676.2020.1844603","DOIUrl":"https://doi.org/10.1080/23249676.2020.1844603","url":null,"abstract":"Along with the urban development, water distribution systems have become increasingly important. Due to their complexity, integrated decision making has become more important. A major difference between simulated and observed data mostly initiates from the NRW which can be determined by conducting a district metered area study. Accordingly, current study was conducted to promote the calibration of the continuous model of water distribution system by the approach of the NRW pattern in accordance to water consumption pattern. Due to the lack of district metered area results, the difference in water production and all measured consumptions was considered as NRW. Three NRW patterns as various hypotheses were evaluated. Statistical Assessment revealed that application of an inline pattern of the subscriber consumption pattern as an NRW pattern provided a more reliable accurate calibration. The results confirmed that unauthorized and unregistered consumption had dominated the major amount of the NRW amount.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23249676.2020.1844603","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43220553","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
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