water flow modeling Articles

  • Senix Water Level Sensors Drive Irrigation Automation Project

    Australia’s Water Crisis Irrigation management is serious business in Australia especially within the Murray-Darling Basin, a 1,000,000 square kilometer watershed that is home to Australia’s most productive agricultural land. The basin’s 23 rivers have ...


    By Senix Corporation

  • Determining Proper Cooling Tower Size

    To maximize water-based cooling tower benefits, the appropriate tower size must be selected, requiring the identification of several critical factors. Cooling towers are a relatively inexpensive and reliable way of expelling heat from a number of industrial processes, including nuclear & thermal power plants, petroleum refineries, petrochemical plants, food processing plants, as well as HVAC ...


    By Delta Cooling Towers, Inc

  • Modeling overland flows in InfoWorks CS

    A new tool within InfoWorks CS v7.5 enables the presentation of flood depths within the bounds of a polygon, otherwise known as a flood compartment. The flood level can be extended throughout the boundaries of the compartment, allowing it to be matched against a ground model to calculate flood depth. The new tool does not alter the way in which flood calculations are undertaken, it is instead a ...


    By Innovyze

  • Improvement of water-quality environment in reservoir models using flow networks

    It is known that thermal stratification and environmental problems such as water quality deterioration occur in water reservoirs. One principle cause is the stagnation of water in the reservoirs, which leads to the problems of density stratification, nutrient enrichment of algae and others. Various methods such as deep-layer mixing and forced-air injection have been utilised to counter these ...


    By Inderscience Publishers

  • Modelling the interaction of surface and subsurface water flow by linking TOPMODEL and MODFLOW

    A coupled ground water–surface water model was used to quantify the hydrological processes in a lowland watershed. The model was constructed by coupling TOPMODEL and MODFLOW without writing new code for the integrated model. Meteorological, land use and soil type data for the Tenmile watershed, USA, were used to run TOPMODEL, which partitions precipitation into evapotranspiration, runoff and ...


    By Inderscience Publishers

  • Validation of the STRIVE model for coupling ecological processes and surface water flow

    The 1D model package STRIVE is verified for simulating the interaction between ecological processes and surface water flow. The model is general and can be adapted and further developed according to the research question. The hydraulic module, based on the Saint-Venant equations, is the core part. The presence of macrophytes influences the water quality and the discharge due to the flow ...


    By IWA Publishing

  • A modified Green–Ampt model for water infiltration and preferential flow

    Preferential flow is significant for its contribution to rapid response to hydrologic inputs at the soil surface and unsaturated zone flow, which is critical for flow generation in rainfall–runoff (RR) models. In combination with the diffuse and source-responsive flow equations, a new model for water infiltration that incorporates preferential flow is proposed in this paper. Its performance in ...


    By IWA Publishing

  • Groundwater flow modeling to support water management scenarios – the Bekaa Valley, Lebanon

    The Italian Ministry of Foreign Affairs funded a project aimed at developing tools for water management in the Bekaa valley, Lebanon. The Lebanese Ministry of Energy and Water implemented the project, supported by the University of Milan Department of Agricultural and Environmental Sciences (DISAA). The geologic framework consists of a cretacean-eocean carbonatic structure, crossed by a fracture ...


    By Tethys srl

  • Surfactant-induced unsaturated flow: Instrumented horizontal flow experiment and hysteretic modeling

    Organic compounds with surface-active properties reduce the surface tension of water and can change soil water contact angles depending on their aqueous concentration. The presence of such compounds in the unsaturated zone affects soil moisture characteristics and unsaturated hydraulic conductivity relations, and can cause flow as a result of induced soil water pressure gradients. Some studies ...

  • Density dependant water flow and contaminant transport

    SoilVision Systems Ltd. would like to announce the release of the addition of fully coupled density-dependent water flow and contaminant transport in ChemFlux and SVFlux. Using the new density-dependent flow capability can improve the accuracy of the simulation of heavy salt water. This new feature has been implemented in 1D, 2D, and 3D models and is enabled to work with the Professional version ...


    By SoilVision Systems Ltd.

  • Density Dependent Water Flow and Contaminant Transport

    SoilVision Systems Ltd. would like to announce the release of the addition of fully coupled density-dependent water flow and contaminant transport in ChemFlux™ and SVFlux™. Using the new density-dependent flow capability can improve the accuracy of the simulation of heavy salt water. This new feature has been implemented in 1D, 2D, and 3D models and is enabled to ...


    By SoilVision Systems Ltd.

  • Modelling aerated flows with smoothed particle hydrodynamics

    Modelling aerated flows is a complex application of computational fluid dynamics (CFD) since the interfaces between air and water change rapidly. In this work, the simulation of aerated flows with the smoothed particle hydrodynamics (SPH) method is investigated with a focus towards the application in engineering practice. To prove the accuracy of the method, the processes of air entrainment and ...


    By IWA Publishing

  • Danfoss drives keep Espoo water flowing

    Espoo is Finland’s second largest city, with over 200,000 inhabitants, and relies largely on Danfoss drives for its water supply. Espoo Water has 140 Danfoss drives, including VLT®5000, VLT®6000 and VLT®8000 AQUA models, located in three potable water plants, one waste-water plant and numerous booster ...

  • Analysis of agricultural pollution by flood flow impact on water quality in a reservoir using a three-dimensional water quality model

    This study presents the Yuqiao Reservoir Water Quality Model (YRWQM), a three-dimensional hydrodynamic and water quality model of the Yuqiao reservoir, China. The YRWQM was developed under the environmental fluid dynamics code (EFDC) model and was calibrated and verified to hydrodynamic and water quality data, using two sets of observed data from January 1 to December 31, 2006 and from May 1 to ...


    By IWA Publishing

  • Integration of the rice paddy water management into a coupled surface-subsurface water flow model in the Sakuragawa River watershed (Japan)

    Rice paddy water management was integrated into a distributed three-dimensional surface and subsurface coupling hydrological model of the Sakuragawa River watershed. This watershed is located in the Kanto Plain in Japan and includes the hillside of Mt. Tsukuba. Therefore, this watershed includes both steep mountainous areas and rice paddy-dominated flat land. Thus, water management of rice ...


    By IWA Publishing

  • A model for overland flow and associated processes within the Hydroinformatics Modelling System

    This paper presents a numerical model suitable for a broad range of surface flow problems such as overland flow, wetting and drying processes, varying flow conditions and shock waves. It is based on solution of two-dimensional fully dynamic shallow water equations using a cell-centred finite-volume method. Numerical fluxes are computed with a Harten, Lax and van Leer approximate Riemann solver ...


    By IWA Publishing

  • Model success for Melbourne Water

    Untitled Document Melbourne Water ...


    By Innovyze

  • Water Quality Models

    ' In order to determine the impacts of a particular discharge on ambient water quality, it is usually necessary to model the diffusion and dispersion of the discharge in the relevant water body. The approach applies both to new discharges and to upgrading of existing sources. This note provides guidance on models that may be applicable in the context of typical Bank projects.' Introduction ...


    By The World Bank

  • Attributiveness of a mass flow analysis model for integrated water resources assessment under data-scarce conditions

    Nutrients in river systems originate from multiple emission sources, follow various pathways, and are subject to processes of conversion and fate. One approach to tackle this complexity is to apply balance-oriented models. Although these models operate on a coarse temporal and spatial scale, they are capable of assessing the significance of the different emission sources and their results can be ...


    By IWA Publishing

  • Evolutionary network flow models for obtaining operation rules in multi-reservoir water systems

    Obtaining operation rules (OR) for multi-reservoir water systems through optimization and simulation processes has been an intensely studied topic. However, an innovative approach for the integration of two approaches – network flow simulation models and evolutionary multi-objective optimization (EMO) – is proposed for obtaining the operation rules for integrated water resource ...


    By IWA Publishing

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