Rediscovering Manning’S Equation Using Genetic Programming,
2014
City University of New York (CUNY)
Rediscovering Manning’S Equation Using Genetic Programming, Carlos F. Gaitan
International Conference on Hydroinformatics
Open-channel hydraulics’ (OCH) research traditionally links empirical formulas to observational data. One of the most common equations in OCH is Manning’s formula for open channel flow (Q) driven by gravity (also known as the Gauckler-Manning-Strickler formula). The formula relates the cross-sectional average velocity (V=Q/A), the hydraulic radius (R), and the slope of the water surface (S) with a friction coefficient n, characteristic of the channel’s surface. Here we show a practical example where Genetic Programming (GP), a technique derived from Bioinformatics, can be used to derive an empirical relationship based on different synthetic datasets of the aforementioned parameters. Specifically, we …
Cloud Computing Solutions For Aiding Urban Water Management,
2014
City University of New York (CUNY)
Cloud Computing Solutions For Aiding Urban Water Management, Peter Cheung, Vinicius Battistelli Lemos, Bruno Andrade
International Conference on Hydroinformatics
The management of Urban Water Systems is a complex problem to not only under viewpoint of water supply but also storm water and sewer systems. Growth of urban areas, rise of the social class and economic empowerment of population mainly in developing countries have caused significant changes under water cycle. Several tools are needed to help water managers in the decision making process. In addition, the availability of these tools may be helpful in providing the regulatory body of rational frameworks for the policy-level decisions. Considering last advances of Information Technology (IT), such as the development of multi-core processors, virtualization, …
An Artificial Neural Network-Based Rainfall Runoff Model For Improved Drainage Network Modelling,
2014
City University of New York (CUNY)
An Artificial Neural Network-Based Rainfall Runoff Model For Improved Drainage Network Modelling, David Walker, Edward C. Keedwell, Dragan A. Savić, Richard Kellagher
International Conference on Hydroinformatics
Modelling rainfall-runoff processes enables hydrologists to plan their response to flooding events. Urban drainage catchment modelling requires rainfall-runoff models as a prerequisite. In the UK, one of the main software tools used for drainage modelling is InfoWorks CS, based on relatively simple methods which are relatively robust in predicting runoff. This paper presents an alternative approach to modelling runoff that will allow for the complex inter-relation of runoff that occurs from impermeable areas, permeable areas, local surface storage and variation in rainfall induced infiltration. Apart from the uncertainties associated with the measurement of connected surfaces to the drainage system, the …
Modelling Of Thermal Energy Balance In Sewer Systems,
2014
City University of New York (CUNY)
Modelling Of Thermal Energy Balance In Sewer Systems, Jan Hofman, Martin Bloemendal, Bas Wols, Claudia Agudelo-Vera, Jorge Elias Maxil, Pascal Boderie, Mark Nijman, Jan Peter Van Der Hoek
International Conference on Hydroinformatics
Warm water is an important factor in the water and energy nexus. The energy used to produce warm tap water is often 10 times higher than the operational energy to produce and distribute drinking water and to collect and treat wastewater together. Once used in a shower, bath or laundry machine, the hot water is disposed into the sewer system. For modern homes in The Netherlands this is 30-50 % of the total heat loss. Heat recovery from sewer systems may therefore be an interesting option to reduce water use related energy. In this study a model was developed to …
Parallel Numerical Modeling Of Two-Phase Flow Process In Porous Medium,
2014
City University of New York (CUNY)
Parallel Numerical Modeling Of Two-Phase Flow Process In Porous Medium, Wenginq Wang, Björn Zehner, Norbert Boettcher, Uwe-Jens Goerke, Olaf Kolditz
International Conference on Hydroinformatics
CO2 storage in geological formations is a promising technology under debate for reducing carbon dioxide emission into the atmosphere. Numerical simulation can help assessing the feasibility of this technology if real geological systems can be analyzed numerically. To this purpose, extremely high computational power is necessary to approach reality. In this work, a parallel computing technique is presented for the numerical simulation of two-phase flow processes in porous media for large scale applications of CO2 storage. The Galerkin finite element method is used to solve the initial boundary value problem arising from the underlying mathematical model. The PETSc package is …
A Foss Based Web Geo- Service Architecture For Data Management In Complex Water Resources Contexts,
2014
City University of New York (CUNY)
A Foss Based Web Geo- Service Architecture For Data Management In Complex Water Resources Contexts, Maria Antonia Brovelli, Carolina Arias, Matteo Giuliani, Andrea Castelletti
International Conference on Hydroinformatics
Advances in environmental monitoring systems from remote sensing to pervasive real and virtual sensor networks are enlarging the amount and types of data available at local and global scale at increasingly higher temporal and spatial resolution. However, accessing and integrating these data for modeling and operational purposes can be challenging and highly time consuming, particularly in complex physical and institutional contexts, where data are from different sources. This research focuses on the design of a web geo- service architecture, based on Free and Open Source Software (FOSS), to enable collection and sharing of data coming from complex water resources domains …
Hydrometeorological Data Collection, Publication And Analysis Using Open-Source Hardware And Software,
2014
City University of New York (CUNY)
Hydrometeorological Data Collection, Publication And Analysis Using Open-Source Hardware And Software, Paul Celicourt, Michael Piasecki
International Conference on Hydroinformatics
Hydrometeorological data is exiguous in developing countries due to the exorbitant price of actual weather monitoring systems acquisition and communication infrastructure built mostly in developed countries. Another impediment to large scale data collection in developed countries is the lack or limited local resources to ensure the maintenance of stations equipments. However, recent advanced progresses made in information and communication technologies have paved the way to access to a large set of free software and low-cost and low-power hardware to sense and monitor the environment. Many researchers and practitioners have grasped the opportunities offered by those technological advances, but, have applied …
Development Of A Stormwater Low Impact Development Planning Tool For The Province Of Ontario, Canada,
2014
City University of New York (CUNY)
Development Of A Stormwater Low Impact Development Planning Tool For The Province Of Ontario, Canada, James Li, Zhi Zheng
International Conference on Hydroinformatics
Stormwater low impact development practices (LID) are lot-level measures which reduce runoff from lots and roads. Although there are many LID planning tools available (ranging from watershed, city, and site levels), it is not easy to find one that is appropriate for development of a LID site plan in Ontario. In particular, the Province of Ontario’s LID performance requirements are based on long-term average annual runoff and pollutant loading reduction. After a review of 16 LID planning tools in North America, it was found that 70% of these tools are site or city level and outputs from these tools include …
Towards A Decision Support System For Flood Management In A River Basin,
2014
City University of New York (CUNY)
Towards A Decision Support System For Flood Management In A River Basin, Luis Vieira, Jose Pinho, Dirk Schwanenberg
International Conference on Hydroinformatics
The world is experiencing a countless number of impressive and devastating floods causing a range of health impacts and risks with hundreds of thousands of people losing their lives or becoming homeless in a matter of hours. EU Floods Directive requires the developing of flood hazard maps, which may include information on hydrological and hydrodynamics characteristics of vulnerable regions, i.e. inundated areas and river flow discharges. Prediction of flood events can accurately be achieved by applying mathematical modelling for describing rainfall-runoff phenomena as well as surface waters hydrodynamics. Moreover, reservoirs can be properly operated in order to minimize flood events …
Influence Of The Rainfall Movement On The Required Volume Of Storage Reservoirs,
2014
City University of New York (CUNY)
Influence Of The Rainfall Movement On The Required Volume Of Storage Reservoirs, Maciej Mrowiec
International Conference on Hydroinformatics
Temporal and spatial variability of rainfalls have a significant impact on the operation of urban drainage systems. Stormwater retention reservoirs are particularly sensitive to these variations. This paper presents the results of research on the impact of the direction and speed of rainfall movement over an urban catchment (of total area 560ha) on required volume of the retention reservoir. Calibrated hydrodynamic model has been used to simulate rainstorms movement (software: SWMM5). The whole catchment was divided into sectors of 600´600m, which facilitated the calculation of time shift between sectors for assumed speeds of rainfall movement (vop= 2, 5 and 10 …
Long-Term Effects Of River Bed Variations Downstream Of The Shihmen Reservoir Due To Climate Change,
2014
City University of New York (CUNY)
Long-Term Effects Of River Bed Variations Downstream Of The Shihmen Reservoir Due To Climate Change, Cheng-Chia Huang, Jihn-Sung Lai, Fong-Zuo Lee, Sheen-Yeong Kang, Shang-Shu Shih, Gwo-Wen Hwang, Gwo-Fong Lin
International Conference on Hydroinformatics
Most rivers in Taiwan are suffered from serious sedimentation problems due to extreme weather in recent years. In order to decrease sediment trap in Shihmen Reservoir, the reservoir sediment was effluent into downstream river during flood period. The river sediment deposition and erosion would be thus more violent. The quasi-two dimensional model, NETSTARS, was applied to investigate hydraulic characteristics and corresponding river sedimentation behavior in Da-Han basin. The model was calibrated and verified with field survey data and then was utilized to predict the spatial and temporal variations of downstream suspended solid concentration. Through investigating the change of suspended solid …
Would Bangkok Be More Vulnerable To The Anticipated Changing Climate?,
2014
City University of New York (CUNY)
Would Bangkok Be More Vulnerable To The Anticipated Changing Climate?, Thannob Aribarg, Minh Tue Vu, Siriporn Supratid, Seree Supratid, Shie-Yui Liong
International Conference on Hydroinformatics
The severe flooding in Thailand in 2011 was triggered by the tropical storm Nock-ten at end of July along the Mekong and Chao Phraya river basin. There are 4 additional storms that caused medium to heavy rainfall from June to October in the north and north-east of Thailand. Due to limited capacity of the Chao Phraya river and also Pasak river, several overbank flows occurred and also dikes along the river were broken causing excessive flow to many communities beside the river and downstream. The consequence was a total of 815 deaths with 13.6 million people affected and over 20,000 …
Using Of The Flood Reservoir Capacity For The Improvement Of River Ecology.,
2014
City University of New York (CUNY)
Using Of The Flood Reservoir Capacity For The Improvement Of River Ecology., Victoriia Belchikhina
International Conference on Hydroinformatics
Today the flood capacities of the Moscow water reservoir system are determined depending on catastrophic spring floods. The rain flood volumes and the consequent maximum discharges are much less of spring flood volumes and the consequent maximum discharges. Main hypothesis of the research is possibility of safe use of flood capacity and drafts from water reservoir after the end of spring flood recession. Accordingly the aim of the research is safe use of flood capacity part for the water storage during summer after spring floods. The aim has required of solving of next problems: - to model the spring and …
Eastern Nile Basin Water System Simulation Using Hec-Ressim Model,
2014
City University of New York (CUNY)
Eastern Nile Basin Water System Simulation Using Hec-Ressim Model, Azeb Belachew, Zelalem Mekonen
International Conference on Hydroinformatics
Eastern Nile Basin water resource related issues are complex which include water allocation, water simulation, reservoir operation and more. Addressing issues requires specialized tools for this reason the Eastern Nile Technical Regional Office developed a set of models under the Eastern Nile Planning Model project. A public domain model is used for this study to simulate the water system of the basin using Hec-ResSim Model. Four separate Hec-ResSim models has been developed for Abbay –Blue Nile –Main Nile, Tekeze-Setit-Atbara, Baro-Akobo-Sobat Sub basins and integrating these into unified model for the whole Eastern Nile Basin. Each of the four models are …
Modeling Of Flood Routing Through Stepped Spillway Of Water Reservoir Dam,
2014
City University of New York (CUNY)
Modeling Of Flood Routing Through Stepped Spillway Of Water Reservoir Dam, Feng Nan, Igor Rumyantsev
International Conference on Hydroinformatics
The research is dedicated to modeling of flood routing through Da Chao Shan Hydropower water reservoir, which is located in Yunnan province on Lancang River (upper flow of Mekong River). The water reservoir is operating in conditions of torrential rain floods, which can not be forecasted in good time. Therefore it is necessary to consider the flood routing through dam with condition of storage water reservoir corresponding to Normal reservoir level before catastrophic flood. The main aim of the work is development of model which allows consider the different scenarios of drafts from water reservoir and flooding the territory. The …
Newly Automated System For Integrated Assessment Of The Conditions Of Underwater Gas Pipelines,
2014
City University of New York (CUNY)
Newly Automated System For Integrated Assessment Of The Conditions Of Underwater Gas Pipelines, Oleg Ilinich, Vadim Pryahin
International Conference on Hydroinformatics
An underwater gas pipeline is the portion of the pipeline that crosses a river beneath its bottom. Underwater gas pipelines are subject to increasing dangers as time goes by. An accident at an underwater gas pipeline can lead to technological and environmental disaster on the scale of an entire region. Therefore, timely troubleshooting of all underwater gas pipelines in order to prevent any potential accidents will remain a pressing task for the industry. The most important aspect of resolving this challenge is the quality of the automated system in question. Now the industry doesn't have any automated system that fully …
Monitoring Snow Cover Area In Semiarid Regions Using Terrestrial Photography,
2014
City University of New York (CUNY)
Monitoring Snow Cover Area In Semiarid Regions Using Terrestrial Photography, Rafael Pimentel, María José Pérez-Palazón, Javier Herrero, María José Polo
International Conference on Hydroinformatics
The heterogeneous distribution of snow in mountain regions often constitutes a great problem for an adequate modeling of snow dynamics. Remote sensing is usually used for the detection of snow distribution, but the fixed spatiotemporal resolution of these sources greatly reduces their efficiency, especially when the significant scale of the process under study is smaller than the sensor resolution. This is the case of the snow in semiarid areas, where rapid snow melting on sunny and warm days may substantially change the snow cover within just a few days, or where small snow patches (O~1 m) usually persist during many …
Differential Evolution Algorithm (De) To Estimate The Coefficients Of Uniformity Of Water Distribution In Sprinkler Irrigation,
2014
City University of New York (CUNY)
Differential Evolution Algorithm (De) To Estimate The Coefficients Of Uniformity Of Water Distribution In Sprinkler Irrigation, Ramin Mansouri, Hasan Torabi
International Conference on Hydroinformatics
Iran, has caused most of the water used and as much as possible to avoid losses. One of the important parameters in agriculture is water distribution uniformity coefficient (CU) in sprinkler irrigation. CU amount of water sprinkler operating depends on different pressure heads (P), riser height (RH), distance between sprinklers on lateral pipes (Sl) and the distance between lateral pipes (Sm). The best combination of the above parameters for maximum CU, is still unknown for applicators. In this research, CU quantities of zb model sprinkler (made in Iran) were measured at Hashemabad cotton research station of Gorgan under 3 different …
Numerical Modeling Of Flow In The Vertical Drop With Inverse Apron,
2014
City University of New York (CUNY)
Numerical Modeling Of Flow In The Vertical Drop With Inverse Apron, Ramin Mansouri, Alinaghi Ziaei
International Conference on Hydroinformatics
Drops are hydraulic structures that are commonly used in irrigation and waste water collection networks. A vertical drop balances the elevation difference between the channel slope and ground slope. Earlier investigations on this structure have mainly focused on experimental studies of the hydraulic characteristics. In this paper, the hydraulic characteristics of vertical drops with inverse apron have been studied numerically with used of Fluent software to solve the finite volume method. The volume of fluid (volume of fluid) was used for modeling the free surface. Flow characteristics such as downstream depth, pool depth and energy loss were calculated and compared …
A Web Gis Based Simulation Tool For Coastal Urban Flood Prediction,
2014
City University of New York (CUNY)
A Web Gis Based Simulation Tool For Coastal Urban Flood Prediction, T. Iype Eldho, A.T. Kulkarni, J. Mohanty, E.P. Rao, B.K. Mohan
International Conference on Hydroinformatics
Flooding in urban areas due to heavy rainfall coupled with high tides is a major concern affecting development of coastal cities all over the world. There is a spectrum of models such as 2D distributed flood models to simplified storage cell models using analytical expressions. All such models demand a high level of skill to handle geospatial data making it difficult for decision makers. Thus development of web GIS based hydrological application becomes essential. Traditionally, most web GIS based applications have used conceptual model because of low data requirements and parameter calibrations. In this paper web GIS based integrated flood …
