Process of hydraulic models calibration

Zimoch, Izabela; Bartkiewicz, Ewelina

doi:10.1051/e3sconf/20185900007

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…It is required in the hydraulic model for providing a reliable model. It adjusts model parameters by minimizing the difference between the simulation result and the actual observation result [19]. The maximum water level from the HEC-RAS simulation was used for comparing the field observed maximum water level under the bridge at the disaster location.…”

Section: Calibrationmentioning

confidence: 99%

Flash Flood Disaster Reconstruction for Estimating the Available Warning Time, the Case in Sempor River on 21^st of February 2020, Mt. Merapi Slope, Yogyakarta Special Region

Sathya

Rahardjo

Jayadi

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Flash floods are hazardous events characterized by short response times. The occurrences of flash flood disasters have increased significantly in the last few years, producing a remarkable casualty number globally. On February 21st, 2020, a flash flood occurred in the Sempor River of the Mount Merapi slope, Special Region of Yogyakarta, Indonesia, causing a significant death of high school students. This study aims to reconstruct the river’s hydrologic and hydraulic conditions and identify the available warning time based on the flash flood event. This study extracted the catchment configuration from a Digital Elevation Model (DEM) using the GIS technique. A simulation of flood hydrograph at a control point used the HEC-HMS model, the SCS Curve Number Loss method, and the SCS Unit Hydrograph. The simulated flood hydrograph was inputted into the one-dimensional unsteady flow model of HEC-RAS to simulate water depth and flow velocity. The calibration process adjusts both models’ parameters by comparing the simulated peak discharge with the surveyed data. The modelling results provide warning time components. The results of this study can support the decision-making in flash flood risk mitigation for the local communities.

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Section: Calibrationmentioning

confidence: 99%

Flash Flood Disaster Reconstruction for Estimating the Available Warning Time, the Case in Sempor River on 21^st of February 2020, Mt. Merapi Slope, Yogyakarta Special Region

Sathya

Rahardjo

Jayadi

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Gradual Leak Detection in Water Distribution Networks Based on Multistep Forecasting Strategy

Wan

Farmani

Keedwell

2023

J. Water Resour. Plann. Manage.

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With the availability of real-time monitoring data, leakage detection for water distribution networks (WDNs) based on data-driven methods has received increasing attention in recent years. Accurate forecasts based on historical data could provide valuable information about the condition of the WDN, and abnormal events could be detected if the observed behaviour is substantially different from the typical behaviour. Therefore, an accurate forecast model is essential for prediction-based leakage detection methods. While most data-driven methods focus on burst detection, it is also important to develop an early warning system for gradual leakage events as they will cause more water loss due to a longer time to awareness. Therefore, a real-time early leakage detection technique based on a multistep forecasting strategy is proposed in this study. A multistep flow forecasting model is introduced to capture the diurnal, weekly and seasonal patterns in the historical data. The generated multistep forecasting is further compared with the observed measurements, and residuals are calculated based on cosine distance. Based on the analysis of the residual vector, the gradual leakage event could be ManuscriptClick here to access/download;Manuscript;manuscript_review_version_2 detected in a timely manner. The proposed method is applied to the L-town datasets containing one year of real-life flow monitoring data. The results prove the superiority of the proposed multistep prediction model-based method over the traditional one-step prediction model for gradual leakage detection. In addition, the results show that the proposed methodology can detect small gradual leakage events within just a few days while generating no false alarms.The method is further applied to a real-life network and showed consistent results.

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Approaches to the implementation of hydraulic electronic models of centralized water supply systems

Gromov

Khudyakova

Pyankov³

2021

Vestnik MGSU

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Introduction. The analysis of the Russian normative and methodological documents, as well as research articles, has identified gaps in the development and practical implementation of hydraulic electronic models of existing water supply systems. The user guide of the software products, used to design these models, merely demonstrates the capabilities of software modules and misses the outcome of their application in certain cases. Decree No. 782 issued by the RF Government on September 5, 2013, being the document that regulates the development of electronic models of water supply systems, lists the requirements applied to software. The document, titled Construction regulations SP 31.13330.2012, has the requirements applicable to the hydraulic analysis of water supply system designs. This suggests that the Russian regulatory environment has no document that contains the basic requirements governing the development and detailing of hydraulic electronic models of water supply systems. This is an essential problem of urban utility networks, since the hydraulic electronic model is the basis for any further actions in strict accordance with which a development plan of a centralized urban water supply system is designed. Materials and methods. The article has a scientific review of the problem of design of electronic hydraulic models of centralized water supply systems and basic principles and approaches to electronic model generation. Results. The co-authors provide a detailed description of a methodology used to develop a model of urban water supply systems as well as the requirements set by foreign standards. Conclusions. Model development and calibration is structured in the article. This information is needed to adjust the characteristics of the designed model to a water supply system in operation.

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Process of hydraulic models calibration

Cited by 3 publications

References 9 publications

Flash Flood Disaster Reconstruction for Estimating the Available Warning Time, the Case in Sempor River on 21^st of February 2020, Mt. Merapi Slope, Yogyakarta Special Region

Flash Flood Disaster Reconstruction for Estimating the Available Warning Time, the Case in Sempor River on 21^st of February 2020, Mt. Merapi Slope, Yogyakarta Special Region

Gradual Leak Detection in Water Distribution Networks Based on Multistep Forecasting Strategy

Approaches to the implementation of hydraulic electronic models of centralized water supply systems

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Process of hydraulic models calibration

Cited by 3 publications

References 9 publications

Flash Flood Disaster Reconstruction for Estimating the Available Warning Time, the Case in Sempor River on 21st of February 2020, Mt. Merapi Slope, Yogyakarta Special Region

Flash Flood Disaster Reconstruction for Estimating the Available Warning Time, the Case in Sempor River on 21st of February 2020, Mt. Merapi Slope, Yogyakarta Special Region

Gradual Leak Detection in Water Distribution Networks Based on Multistep Forecasting Strategy

Approaches to the implementation of hydraulic electronic models of centralized water supply systems

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Product

Resources

About

Flash Flood Disaster Reconstruction for Estimating the Available Warning Time, the Case in Sempor River on 21^st of February 2020, Mt. Merapi Slope, Yogyakarta Special Region

Flash Flood Disaster Reconstruction for Estimating the Available Warning Time, the Case in Sempor River on 21^st of February 2020, Mt. Merapi Slope, Yogyakarta Special Region