open channel flow Articles

  • Open Channel Flow - The use of Level sensors for open channel flow measurement

    Open Channel Flow - The use of Level sensors for open channel flow measurement Level sensors from SolidAT are implemented in Open Channel Flow applications. In these types of applications, the level sensor is installed above a special water flow structure and accurately measures level of flowing water or wastewater. The sensor then calculates flow through the structure ...

  • Prediction of flow resistance in a compound open channel

    Flooding in a river is a complex phenomenon which affects the livelihood and economic condition of the region. During flooding flow overtops the river course and spreads around the flood plain resulting in a two-course compound channel. It has been observed that the flow velocity in the flood plain is slower than that in the actual river course. This can produce a large shear layer between ...


    By IWA Publishing

  • Longitudinal dispersion in open channel flow with suspended canopies

    Suspended canopies can cause flow disturbances such as reducing velocities within the canopy, and increasing flow beneath the canopy. Flow modifications by canopies dramatically affect the fate and transport of sediment, nutrients, contaminants, dissolved oxygen, and fauna in aquatic systems. A three-zone model is presented here to predict the longitudinal dispersion coefficient by simplifying ...


    By IWA Publishing

  • Analyzing the turbulent flow on steep open channels

    In channels with steep slopes, the flow is supercritical and the formation of roll waves is expected. In order to evaluate the flow behaviors in steep open channels, the Azad dam spillway is simulated numerically and its flow characteristics are compared with the physical model tests. In this study, the hydraulic variables including hydraulic depth and water surface profile are studied along ...


    By IWA Publishing

  • GP approach for critical submergence of intakes in open channel flows

    This technical paper presents the genetic programming (GP) approach to predict the critical submergence for horizontal intakes in open channel flow for different bottom clearances. Laboratory data from the literature for the critical submergence for a wide range of flow conditions were used for the development and testing of the proposed method. Froude number, Reynolds number, Weber number and ...


    By IWA Publishing

  • Closed vessel or open channel UV disinfection systems

    Ultra violet disinfection is now a standard feature in most waste water disinfection systems. UV has also been adopted by the drinking water community, as a barrier against the chlorine tolerant species such as Cryptosporidium and Giardia. The technology is widely favored due to its non- chemical nature, the fact that no subsequent de-chlorination process is required, and its ability to be ...


    By atg UV Technology

  • OCF 5.0 open channel flow monitors - monitor infulent at Long Sault WWTP plant

    Greyline Open Channel Flow Monitors were installed at the Wastewater Treatment Plant in Long Sault, Ontario when the SBR plant was originally commissioned in 1995. But after 16 years of continuous service, components for the old models became obsolete. Plant operators Caneau Water and Sewage Inc. decided to replace the instruments and new Greyline OCF 5.0 Open Channel Flow Monitors were installed ...


    By Greyline Instruments Inc.

  • Efficient investigation on fully developed flow in a mildly curved 180° open-channel

    Turbulent flow in meandering open channels is one of the most complicated and unpredictable turbulent flows as the interaction of various forces, such as pressure gradient, centrifugal force, and wall shear stresses severely affect the flow pattern. In order to improve significance in engineering application, understanding the overall flow characteristic is the focus. This paper presents the ...


    By IWA Publishing

  • Effect of bed roughness on 1-D entropy velocity distribution in open channel flow

    A theoretic-analytical formulation, based on entropy velocity profile law and classical relationships for uniform flow and friction factor, is proposed enlightening the general logarithmic relationship existing between the parameter Φ(M), defined as mean cross section velocity over maximum velocity, and the ratio water depth/bed roughness ...


    By IWA Publishing

  • Improved Open Channel Flow Measurement & Control Using Pulsed Hybrid Flat Bed Magmeters

     ABSTRACT This paper introduces Pulsed Hybrid flat bad magnetic flowmeter techniques and how they improve the quality of flow measurement and control over existing art, normally with significant cost savings in operation and installation. The flat bed magmeters have been extensively tested in the laboratory and on-site, with details given for a particular site case. Such tests gave ...

  • Prediction of end-depth ratio in open channels using genetic programming

    In this paper, genetic programming (GP) is used as an effective model induction tool to solve a classic problem in open channel flow: the free overfall. By applying GP to experimental data of circular channels with a flat bed and employing a model selection procedure, a reliable expression in the form of hc = AheeBvs0 is found for calculating the critical depth (hc) and end-depth ratio (EDR). ...


    By IWA Publishing

  • French WWTP installs LIT open channel UV-system

    Recently O.E.I. France, distributor of LIT for the French market, installed a LIT open channel UV system in the South of France close to the Mediterranean Sea. The system is placed in the municipal Waste Water Treatment Plant (WWTP) of the village of Canet-en-Roussillon with 10.182 inhabitants. The capacity of the WWTP however is based on the summer season population of 66.000 inhabitants. The ...

  • Improving flow distribution in influent channels using computational fluid dynamics

    Although the flow distribution in an influent channel where the inflow is split into each treatment process in a wastewater treatment plant greatly affects the efficiency of the process, and a weir is the typical structure for the flow distribution, to the authors' knowledge, there is a paucity of research on the flow distribution in an open channel with a weir. In this study, the influent ...


    By IWA Publishing

  • SCS - Spiral Channel Screen

    Here we grow again! More new products from Arlat Arlat releases it’s ‘SCS’ Spiral Channel Screen, for use in small channels and Septage Receiving stations. Ready for release this year, Arlat is adding another screen design to their product line up. The SCS is designed for channels that are 2’ (24”) in width or smaller. Arlat has received numerous call from sales representatives and ...

  • Predicting apparent shear stress in prismatic compound open channels using artificial neural networks

    The apparent shear stress acting on the vertical interface between main channel and floodplain (with and without vegetation) in prismatic compound open channels was studied using artificial neural networks (ANNs). Apparent shear stress is commonly used to quantify the transverse momentum exchange between sub-areas of the cross section, and its influencing factors include channel geometry, ...


    By IWA Publishing

  • Open MI: linking models

    Traditionally sewers and rivers have been modelled separately using different software applications, with outputs from one model being fed into the other. However this does not fully represent the continuous interaction between the two modeled elements. Assessing the impact of sewerage discharges and overland flows from urban areas to watercourses and the subsequent effects of watercourse levels ...


    By Innovyze

  • Ayalon concrete channel, Tel-Aviv, Israel

    In Israel, the long, dry summer is followed by a short rainy winter season causing high-flow, high-velocity streams and flooding often occurs. Serving as the divider for the north and south lanes of the Tel-Aviv Freeway, the Ayalon channel was designed to handle the surging waters of the Ayalon River during Tel-Aviv’s winter rainy season. Since the channel's original design, the city has grown ...


    By Presto Geosystems

  • Lagoon Discharge Flow Monitoring

    Open Channel Flow Monitoring without a Flume or Weir Township operators liked the Greyline AVFM 5.0 datalogger reporting system where formatted flow reports (total, minimum, maximum and average) could be downloaded automatically to a USB memory stick without carrying a laptop to the site. The Township of South Glengarry in Eastern Ontario discharges continuously from their ...


    By Greyline Instruments Inc.

  • Accurate management of waste water flow case study

    SmartScan 50O provides an accurate ultrasonic solution for flow measurement of waste water in a nation-wide advanced treatment plant. This wastewater treatment plant is located just outside a pop. 1 Million City. The plant provides wastewater treatment services for the municipality since 1999. The plant utilizes the latest technology of wastewater treatment that enables purification of ...

  • Entropy generation for unsteady natural convection and radiation within a tilted saturated porous channel

    The problem of entropy generation for unsteady natural convection and radiation in a tilted open-ended channel, submitted to uniform hot walls temperature and filled with an isotropic fluid saturated porous medium is outlined. The present study is carried out using the Darcy flow model. The local thermal equilibrium assumption is assumed. Viscous dissipation effects are taken into account. The ...


    By Inderscience Publishers

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you