hydraulic power data Articles

  • Hydraulic modeling trends in 2003

    It is traditional as a New Year dawns to review the old year and draw some conclusions. Not to be left out, we asked a number of our industry experts to reflect on key developments in their area of specialism based on their observation of the activities and issues facing users around the world during 2003. We cover in turn each of our key areas – Collection Systems, Water Supply, River Systems, ...


    By Innovyze

  • Using GIS to Build Hydraulic Models Faster

    The use of hydraulic models, already widespread, continues to grow rapidly.  Modeling is used increasingly all around the world to address planning and operational issues in water supply networks, collection systems, and river management. Much of this growth results from the rapid advances in the capabilities of the best of the hydraulic modeling software solutions, which constantly improve ...


    By Innovyze

  • Hydraulic Modelling in the Middle East and North Africa

    Water is under pressure in the Middle East and North Africa, a region which houses 4% of the world’s population but possesses only 1.4% of global water resources. A naturally scarce resource at the best of times faces increasing demand from a growing population with high expectations of water quality, supply and treatment. At the same time, the price of water fails to reflect the true cost of ...


    By Innovyze

  • Hydraulic “Fracking”: Are surface water impacts an ecological concern?

    Use of high‐volume hydraulic fracturing (HVHF) in unconventional reservoirs to recover previously inaccessible oil and natural gas is rapidly expanding in North America and elsewhere. Although hydraulic fracturing has been practiced for decades, the advent of more technologically advanced horizontal drilling coupled with improved slickwater chemical formulations has allowed extensive natural ...


    By John Wiley & Sons, Ltd.

  • Experimental facilities for VVER thermal hydraulic research and code validation (COVERS)

    The main objectives of the COVERS Task Group WP3B 'Experimental facilities and code validation' are as follows: description of all major experimental facilities modelling the Thermal Hydraulics (TH) of VVERs; identification of missing test data or experimental capabilities; discussion of shared use of the facilities; discussion of needs for further computer code validation; comparing analysis ...


    By Inderscience Publishers

  • Changing the energy game with the ‘power of one’

    Who among us has not eagerly described the smart meter to a non-energy person only to be greeted by a blank stare, or worse the retort: “Why would I want to track my electricity costs all day?” You try to explain the profound applications: smart appliances that talk to the power grid, consumer clubs that sell energy savings, your car serving as a power plant. But the conversation then ...

  • A GIS-based water distribution model for Zhengzhou city, China

    Many water companies in China are developing GIS as a computer-based tool, for mapping and analyzing objects and events that happen on a water distribution network. However, only a few companies have taken a further step to develop a hydraulic model based on GIS, and Zhengzhou Water Supply Corporation is one of them. The WaterGEMS V8 XM from Bentley is used to develop the hydraulic model for the ...


    By IWA Publishing

  • Web–based post–processor for RELAP5: a development based on LabVIEW

    This work presents the development of a LabVIEW web–based post–processor for the RELAP5 output. A RELAP5 model was developed for the thermal–hydraulics experimental facility, called Natural Circulation Circuit. A Visual Basic for application program (Xtrip) was developed to transform binary data file from RELAP5 in an ASCII file. This new output file can be displayed in user–friendly Graphical ...


    By Inderscience Publishers

  • Performances of photovoltaic water pumping systems: a case study

    This paper presents a mathematical motor-pump model for photovoltaic (PV) applications which allow us to contribute in the studies of PV pumping sizing. The modelled motor-pump characteristic is flow rate-power (Q, P). The model is established for centrifugal pump (CP) coupled to DC motor. The non-linear relation between flow rate and solar power has been obtained experimentally in a first step ...


    By Inderscience Publishers

  • Testing and developing energy harvester systems for operation of energy-self-sufficient measurement and control units in drinking water supply

    In recent years, wireless measurement and control units have become more popular for monitoring water distribution systems in the drinking water supply. Electric power supply for a higher number of devices through fixed connections to the public electrical grid is technically complex and requires large investments. Powering monitoring devices, which are installed in areas where electrical ...


    By IWA Publishing

  • An adaptive predictive approach for river level forecasting

    Efficient flood management requires accurate real-time forecasts to allow early warnings, real-time control of hydraulics structures, or other actions. Commercially available computing tools typically use hydraulic models derived from the numerical approximation of Saint-Venant equations. These tools need powerful computers, accurate knowledge of the riverbed topography, and skilled operators ...


    By IWA Publishing

  • Multivariate statistical analysis for water demand modelling: implementation, performance analysis, and comparison with the PRP model

    Water demand is the driving force behind hydraulic dynamics in water distribution systems. Consequently, it is crucial to accurately estimate the actual water use to develop reliable simulation models. In this study, copula-based multivariate analysis was proposed and used for demand prediction for a given return period. The analysis was applied to water consumption data collected in the water ...


    By IWA Publishing

  • Problem Solving with InfoNet 8: Linking InfoNet to modeling software

    Untitled Document The previous articles in this series of InfoNet Problem Solvers have discussed using InfoNet as a water company's asset ...


    By Innovyze

  • Introducing the Knowledge Center

    Want to learn more about analyzing critical fluids like lubrication oil? Check out our NEW Knowledge Center.   Our mission at Spectro Scientific is to enable our customers to always make ...


    By Spectro Scientific

  • Investigation of flashing-induced instabilities at CIRCUS test facility with the code ATHLET

    The test facility CIRCUS (CIRculation Under Start-up) was built to study the start-up phase of a natural-circulation BWR. During the start-up,so-called flashing-induced instabilities can arise. These instabilities are induced by flashing (i.e., steam production in adiabatic conditions) of the coolant in the long riser section, which is placed above the core to enhance the flow rate. The flashing ...


    By Inderscience Publishers

  • Predicting actual reactor conditions: why time–domain simulation is necessary for BWR stability

    Despite two decades of development and successful use of coupled thermal–hydraulics/neutron–kinetics (TH/NK) codes for the analysis of design basis accidents, the application of coupled codes to BWR stability transients remains a formidable challenge. While the issues in physical models and numerical methods can be identified, quantified and managed through special developments and ...


    By Inderscience Publishers

  • A genetic algorithm for demand pattern and leakage estimation in a water distribution network

    The sustainable management of water supply networks requires the control of physical pipe leakages, such as those due to junction obsolescence or pipe creeping. These leakages usually increase with the operating pressure, and their discharge is commonly assumed to scale with the power of the pressure. The same functional form is also employed to evaluate leakage occurring in the portion of the ...


    By IWA Publishing

  • InfoWorks proves ideal for ‘mega models’

    The recent development of some exceptionally large hydraulic models in both InfoWorks WS and InfoWorks CS has highlighted the advantages of Wallingford Software’s InfoWorks platform for the creation, management and modeling of large and complex models. Representation of a network made up of hundreds of thousands of pipes requires rigorous data management as well as a fast hydraulic solution. ...


    By Innovyze

  • Evolution of an integrated 1D/2D modeling package for urban drainage

    Introduction: Recent flooding events in North America have revealed deficiencies in existing stormwater infrastructure and management practices. The development of effective and efficient designs requires a comprehensive understanding of flooding in urban areas and complex open channel and overland flow systems. Traditional one dimensional (1D) models are used to simulate flow in river ...


    By XP Solutions

  • Allocation of water consumption in multipurpose reservoirs

    The Intergovernmental Panel on Climate Change Special Report on Renewable Energy Sources represented a benchmark in the assessment of water consumption from electricity production. The numbers for hydropower ranged from very low to much larger than the other renewable technologies, partly explained by methodological problems. One of the methodological shortcomings identified was the lack of ...


    By IWA Publishing

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