Liquid Flow Monitoring Articles

  • Sensor Probe Insertion/Retractor Simplifies Installation of Steam Flow Meters in Hot Tapping Applications

    Accurately measuring fluid flows like steam in large ducts or pipes is a challenging application. Large ducts and pipes often have swirl or turbulent flow which makes accurate flow measurement difficult. Not to mention, installation of steam flow meters can be extremely challenging since in many cases you will need to shut off the steam flow to install the meter. This is just not ...


    By Sierra Instruments, Inc.

  • Reducing Costs of Steam Flow Measurement

    Traditionally, steam flow has been measured with a differential pressure device. This is typically an orifice plate. However, such devices are inherently volumetric flow measurements. As we have discussed in previous blog posts, changes in pressure and temperature ...


    By Sierra Instruments, Inc.

  • What is microflow?

    What are the differences between micro-scale and conventional LC? Microflow (aka micro-scale) LC/MS has been widely applied to proteomic research for years.  Recently, as microflow LCMS systems continue to evolve, more and more laboratories in various fields are weighing the implications of applying this small-is-beautiful technology. In this and my next two blog posts, ...


    By Waters Corporation

  • Viscous Pumping in Focus

    The performance of a pump is influenced when it handles viscous fluids such as crude oil. For the configuration and design of pumps, this is key. In the industry, pump performance curves are developed by testing with water at temperatures around 25°C and corrected to a specific gravity of one. Engineers use this standard so that they have comparable measurement values around the ...


    By Sulzer

  • E-Guide Measuring Oil Viscosity

    The most important physical property of a lubricating oil is viscosity. Viscosity determines the load carrying ability of the oil as well as how easily it circulates. The correct balance between high viscosity for load carrying and low viscosity for ease of circulation must be considered for any lubricant and its application. ...


    By Spectro Scientific

  • Optimization design of submerged propeller in oxidation ditch by computational fluid dynamics and comparison with experiments

    The operating condition of a submerged propeller has a significant impact on flow field and energy consumption of the oxidation ditch. An experimentally validated numerical model, based on the computational fluid dynamics (CFD) tool, is presented to optimize the operating condition by considering two important factors: flow field and energy consumption. Performance demonstration and comparison ...


    By IWA Publishing

  • REDmeters - Blue Paper

    REDmeters: Abstract The process of controlling and the cost of monitoring slurries in many industries are normally accomplished using various continuous mass flow systems. These types of systems usually contain a magnetic flow meter and a line density meter. There is inherent cost associated to these systems due to the inaccurate nature of these meters. Some meters on the market boast up to ...


    By REDmeters

  • Modeling settling tanks for water treatment using computational fluid dynamics

    A computational fluid dynamics model is presented for the calculation of the flow, suspended solids, and tracer concentration fields in the settling tanks of the water treatment plant of Aharnes, an important component of the water supply system of the greater area of Athens, Greece. The model is applied to investigate the expected negative effect of the wind on the hydraulic and settling ...


    By IWA Publishing

  • Validation of computational non-Newtonian fluid model for membrane bioreactor

    Membrane bioreactor (MBR) systems are often considered as the wastewater treatment method of the future due to their high effluent quality. One of the main problems with such systems is a relative large energy consumption, compared to conventional activated sludge (CAS) systems, which has led to further research in this specific area. A powerful tool for optimizing MBR-systems is computational ...


    By IWA Publishing

  • 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

  • Evaluation of flow hydrodynamics in a pilot-scale dissolved air flotation tank: a comparison between CFD and experimental measurements

    Computational fluid dynamics (CFD) models of dissolved air flotation (DAF) have shown formation of stratified flow (back and forth horizontal flow layers at the top of the separation zone) and its impact on improved DAF efficiency. However, there has been a lack of experimental validation of CFD predictions, especially in the presence of solid particles. In this work, for the first time, both ...


    By IWA Publishing

  • Evaluation of flow hydrodynamics in a pilot-scale dissolved air flotation tank: a comparison between CFD and experimental measurements

    Computational fluid dynamics (CFD) models of dissolved air flotation (DAF) have shown formation of stratified flow (back and forth horizontal flow layers at the top of the separation zone) and its impact on improved DAF efficiency. However, there has been a lack of experimental validation of CFD predictions, especially in the presence of solid particles. In this work, for the first time, both ...


    By IWA Publishing

  • Keeping Everything Flowing - How process technology from ProMinent secures optimal flow for industry

    Do you know about the flow? That warm and fuzzy feeling when everything is running perfectly? Transferred to the field of process technology, this ideal condition has been reached when all components within a processing plant interact perfectly with one another, when processes are executed efficiently, safely and economically and the system is capable of delivering its maximum productivity. To ...

  • Study on hydrodynamics and heat transfer of solitary wave on film flow with CFD method

    In this paper, a capacitance probe and high speed camera are adopted to study the solitary wave of falling film on large flat plate experimentally. Two types of solitary wave are studied with a Computational Fluid Dynamic (CFD) method based on the measuring data. The water–air shear stress on the interface of the solitary wave is modelled in the numerical calculation. The results indicate that ...


    By Inderscience Publishers

  • Experimental study on flow and ventilation behaviours over idealised urban roughness

    Flows in the urban boundary layer (UBL) are strongly affected by the inhomogeneous roughness elements at the bottom surface. In particular, in the near-ground region (roughness sublayer), the effect of the surface roughness dominates that complicates the behaviours of mean flow and turbulence and subsequently the near-wall transport processes. To safeguard the health of urban inhabitants, it is ...


    By Inderscience Publishers

  • Hydrodynamic evaluation of a full-scale facultative pond by computational fluid dynamics (CFD) and field measurements

    Knowledge of the hydraulic behaviour is very important in the characterization of a stabilization pond, since pond hydrodynamics plays a fundamental role in treatment efficiency. An advanced hydrodynamics characterization may be achieved by carrying out measurements with tracers, dyes and drogues or using mathematical simulation employing computational fluid dynamics (CFD). The current study ...


    By IWA Publishing

  • Optimization of a hydrodynamic separator using a multiscale computational fluid dynamics approach

    This article deals with the optimization of a hydrodynamic separator working on the tangential separation mechanism along a screen. The aim of this study is to optimize the shape of the device to avoid clogging. A multiscale approach is used. This methodology combines measurements and computational fluid dynamics (CFD). A local model enables us to observe the different phenomena occurring at the ...


    By IWA Publishing

  • The POROLUX “true” First Bubble Point detection mode application note

    The POROLUX 1000 is a research grade capillary flow porometer with very pressure and flow control and accuracy. In the POROLUX 1000 a porous sample is inserted, wetted with a so-called wetting liquid. The sample is usually a flat round disk, three different diameters are standard: 13, 25 and 47 mm. Custom made sample holders are optional. The wetting liquid is a liquid which fills up all pores of ...


  • REX Evaluation Guide

    REXTM (Real-timeElementalX-ray Fluorescence System) is the only instrument capable of unattended real-time elemental analysis of dissolved metallic contents in fluids using X-ray fluorescence with low parts-per-billion (ppb) sensitivity. Important applications exist for the following industries, among others: Municipal drinking water supply Chemical processing industry Mining ...

  • A three–dimensional CFD approach for prediction of noise reduction of mufflers without mean flow

    A CFD approach, in which the full equations are solved in the time domain, is proposed to calculate noise reduction of a cleaner and a complex exhaust muffler without mean flow. First, two modelling approaches are used to deal with the outlet boundary and to calculate noise reduction of the cleaner without a filter element. The calculated results agree quite well with measurements. Further, the ...


    By Inderscience Publishers

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