Relevant bibliographies by topics / Flow measurement method

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Flow measurement method'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Flow measurement method"

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Dutillet, Jean-Louis. "Flow measurement: the dilution method." Flow Measurement and Instrumentation 4, no. 1 (January 1993): 51–52. http://dx.doi.org/10.1016/0955-5986(93)90011-7.

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Nishiahra, Kazuyoshi, Charles W. Knisely, Yusuke Nakahata, Yasushi Sasaki, and Manabu Iguchi. "OS8-1-1 Measurement method of three dimensional flow through descriptive geometry." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2007.6 (2007): _OS8–1–1–1—_OS8–1–1–5. http://dx.doi.org/10.1299/jsmeatem.2007.6._os8-1-1-1.

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Watanabe, Noriyuki. "Flow measurement method and it's characteristic." Japan journal of water pollution research 10, no. 10 (1987): 582–88. http://dx.doi.org/10.2965/jswe1978.10.582.

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KATAKURA, Kageyoshi, and Motoyoshi OKUJIMA. "METHOD FOR ULTRASONIC FLOW VECTOR MEASUREMENT." Journal of the Visualization Society of Japan 13, Supplement1 (1993): 119–22. http://dx.doi.org/10.3154/jvs.13.supplement1_119.

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Kovtun, S. N., A. I. Mogil'ner, S. A. Morozov, Yu P. Trubakov, and A. Yu Uralets. "Spectral method of flow-velocity measurement." Soviet Atomic Energy 60, no. 3 (1986): 265–67. http://dx.doi.org/10.1007/bf01132318.

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Gommer, Frank, Stepan Lomov, Kelly Vandenbosche, and Ignace Verpoest. "Error Assessment in Permeability Measurement Using Radial Flow Method." Advanced Composites Letters 18, no. 4 (July 2009): 096369350901800. http://dx.doi.org/10.1177/096369350901800402.

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Permeability values measured on textile reinforcements with different methods or different test set-ups can differ significantly from each other. Even measurements preformed on the same test set-up can have a substantial scatter of measured permeability values. This paper discusses the sources of possible measurement errors for a radial flow set-up and their influence on the measured permeability results. Suggestions are given to improve the reliability of permeability measurements.
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Dindorf, Ryszard, and Piotr Wos. "Indirect Method of Leakage Flow Rate Measurement in Compressed Air Pipelines." Applied Mechanics and Materials 630 (September 2014): 288–93. http://dx.doi.org/10.4028/www.scientific.net/amm.630.288.

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The paper deals with new indirect methods of leakage flow rate measurement in compressed air pipelines. In this method the measurement equipment has branch connection to the pipeline. The measurement method consists in determining the relation between air leakage flow rate in pipeline and the controlled air flow rate through adjustable throttle valve. Compressed air leakage flow rate in pipeline is calculated on the basis of pressure ratio measurements in two time intervals - during leakage without the controlled flow and with the controlled flow in branch line. The controlled air flow through the throttle valve is directly measured by flow meter.
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Patel, Dhara, and Saurabh Upadhyay. "Optical Flow Measurement using Lucas Kanade Method." International Journal of Computer Applications 61, no. 10 (January 18, 2013): 6–10. http://dx.doi.org/10.5120/9962-4611.

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Zhao, Ran, and Ping Sun. "Deformation-phase measurement by optical flow method." Optics Communications 371 (July 2016): 144–49. http://dx.doi.org/10.1016/j.optcom.2016.03.075.

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Nashima, Takeshi. "Method of Viscoelasticity Measurement under Shear-Flow." Nihon Reoroji Gakkaishi 48, no. 5 (December 15, 2020): 251–57. http://dx.doi.org/10.1678/rheology.48.251.

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Dissertations / Theses on the topic "Flow measurement method"

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Franks, Peter J. "Estimation of cardiac output by a single breath method." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/32997.

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Many attempts have been made to quantify cardiac output using both invasive and non-invasive techniques. The results have generally been poorly reproducible and comparisons of techniques have yielded highly variable values. A single breath inert gas method was used in the study, since it offers several advantages over previous methods, chiefly its speed of measurement, and the controlled manner in which it is performed. The method observes the uptake of a semi-soluble inert gas (Freon-22) with respect to an insoluble marker, and calculates cardiac output (pulmonary flow) from the slope of the semi-soluble gas.
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Cai, Shiqian. "An artificial neural network method for three phase flow measurement." Thesis, Imperial College London, 1995. http://hdl.handle.net/10044/1/8227.

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Wei, Datong. "Quantitative and continuous measurement of cerebral blood flow by a thermal method." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1060354210.

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Ali, Maythem. "Development of an electromagnetic induction method for non-invasive blood flow measurement." Thesis, University of Huddersfield, 2016. http://eprints.hud.ac.uk/id/eprint/28706/.

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Blood flow is an important measurement in the diagnosis of cardiovascular diseases – the main cause of death globally. Cardiovascular diseases are often associated with atherosclerosis, which is a condition that causes the narrowing of arteries due to a buildup of lipids on the wall of the arterial vessels. Atherosclerosis occurring in the upper or lower limbs (referred to as peripheral arterial diseases) may lead to heart attack, stroke or severe health complications. Early detection of peripheral arterial diseases will enable primary prevention, and thus a reduction in morbidity, mortality and associated resources and financial costs. Limitations and drawbacks in the current methods for peripheral arterial blood flow measurement were primary factors in directing this research, which focuses on developing a reliable, easy-to-use and low-cost, non-invasive blood flow metering method that can replace or be an alternative option to current methods. This thesis describes the design and development of a novel electromagnetic induction method that can be used for peripheral arterial blood flow measurement non-invasively. In general terms, an electromagnetic induction flow metering technique is desirable because it is linear and insensitive to viscosity, temperature, conductivity and pressure loss. Additionally, and unlike previous non-invasive electromagnetic blood flow meters, the proposed method can be calibrated offline and is insensitive to velocity profile. The latter is important in obtaining measurements with high accuracy as blood flow in mammals is asymmetric. A mathematical model was developed for the proposed electromagnetic induction method based on the theory of “weight functions” by Shercliff and the “virtual current” theory by Bevir. This model demonstrated that, for multiple flow channels within a cross-sectional area bounded by a multi-electrode array and across which a uniform magnetic field is applied, flow induced potentials, due to the flow interaction with the magnetic field, can be predicted. From these flow induced potentials, the total volumetric flow rate can be found, irrespective of the number, size and location of the flow channels within the area bounded by the electrode array using a technique based on the Discrete Fourier Transform method. This proposed method allows the venous and arterial blood flow in a limb to be found. Next, a finite element model was developed in COMSOL Multiphysics software to validate the theoretical work. This was achieved by modelling multiple flow channels within a cylindrical region and obtaining flow induced potentials, which were compared with the theoretical values. From these induced potentials, the volumetric flow rate was found, using the DFT method, and confirmed. Finally, a practical model was designed and built which consisted of a physical pipework model (simulating a human limb), an electromagnet and signal conditioning and processing systems. Flow induced potential difference measurements were made using this model and compared with the predicted theoretical values. Overall, a good agreement was found between the theoretical results, computer simulations and practical results. Based on this work and additional work that is suggested in thisresearch, a medical prototype non-invasive electromagnetic blood flow meter device can be developed for clinical trials.
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Onilude, Ayodele. "A novel method for phase distribution measurement in water continuous two-phase flow." Thesis, University of Huddersfield, 2017. http://eprints.hud.ac.uk/id/eprint/34406/.

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Multiphase flows are occurring in several areas of the process industries. It is the concurrent flow of a mixture of fluid and solid components/phases. The multiphase flows are dependent on the flow regimes, the pipe orientation and the flow properties of the constituent phases such as the flow velocity and the volume fraction. Solids-liquid flows, such as slurries it occurs in horizontal and inclined pipes. Slurries have been used for transporting solid materials over long and short distances in various industries; these industries include the oil and gas industry, the mining industry and the food industry. Within these industries, the measurement of the multiphase flow parameters such as the local volume fraction distribution and the local axial velocity distribution of the solids dispersed in liquid in slurries are required parameters, for example for quantifying the local volume fraction for flow optimisation. The individual phases within the multiphase flow can be unpredictable and time dependent. Therefore, it is important to constantly monitor and measure the local flow parameters. The measurement of the local flow parameters in multiphase flows is very challenging. There are several solutions for measuring these flow parameters such as invasive sensing techniques, which have the tendency to alter the flow regime, while the non-invasive techniques allow for measurement without altering the flow profile. This thesis proposes a novel design and development of a non-invasive phase monitoring device PMD, which determines the local solids volume fraction of a discontinuous phase dispersed in an electrically conducting continuous phase of a multiphase flow. Extensive simulation was carried out to validate the design and optimisation of the electrode probe to be used for acquiring the boundary measurements. In this thesis, the associated electronic circuitry for the PMD were designed, signal processing and a relevant reconstruction algorithm were also developed for acquiring the boundary measurements and presenting the measurement information quantitatively and qualitatively respectively. A novel reference apparatus was designed as an accurate point of reference to investigate the accuracy of PMD. A series of experiments were carried out in order to measure the local solid volume fraction of the dispersed phase for various simulated non-uniform and uniform flow conditions. The results obtained indicate good quantitative agreement with reference measurements of the local solids volume fraction. The local volume fraction measurement technique described and presented in this thesis, is simpler, more accurate and less expensive than popular techniques such as the dual-plane Electrical Resistance Tomography (ERT).
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Alvarez, Merino José Carlos Daniel, and Alvarez Adrian Eduardo Palomo. "Instrument for measuring air speed by means of parabolic movement and measuring method." Universidad Peruana de Ciencias Aplicadas (UPC), 2018. http://hdl.handle.net/10757/624347.

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Patente de tipo Aplicación (US20180245954A1). 30 de Agosto de 2018.
The invention relates to an instrument for measuring air speed by means of parabolic movement and to a measuring method, wherein the measuring instrument is formed by a cubic structure (1) that holds a screwable, flexible container (2) which releases—where air speed needs to be measured—a drop of liquid, the drop falling on one of the concentric circles located on an interchangeable plate (3) that is positioned on a flat base (4) of the device and perpendicular to the axial end of the outlet for the drop of liquid. Depending—on the height—the movement with which the drop falls, the air speed can be determined by means of the horizontal range of the parabolic movement followed by the drop of liquid, and evaluated using the distance be ween the point of impact of the drop on the surface with respect to the center. The direction of the air speed can also be determined from angle formed by the projection of the vertical plane above which projection the air moves in relation to the x-axis of the x-y plane located above the interchangeable plate (3).
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張啓軍 and Qijun Zhang. "The Galerkin Element Method and power flow in acoustic-structural problems with damped sandwich plates." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31239742.

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Pasquini, Enrico, Heiko Baum, Bebber David van, and Denis Pendovski. "Numerical Simulation of Transient Diabatic Pipe Flow by using the Method of Characteristics." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199881.

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The following paper presents a one-dimensional numerical model for simulating transient thermohydraulic pipe flow based on the Method of Characteristics. In addition to mass and momentum conservation, the proposed scheme also guarantees compliance with the laws of thermodynamics by solving the energy equation. The model covers transient changes in fluid properties due to pressure changes, heat transfer and dissipation. The presented methodology also allows the computation of the transient temperature distribution in the pipe wall through an additional ordinary finite difference scheme. The numerical procedure is implemented in the commercial simulation software DSHplus. The capability of the code is examined by comparing the simulation results with theoretical solutions and experimental data.
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MacLean, Matthew. "A Numerical Study of Internal Flow Effects on Skin Friction Gages." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/27114.

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This work examines the detailed flow characteristics of direct measuring skin friction gages with computational methods. This type of device uses a small movable head mounted flush to a wall such that the head is assumed to be exposed to the same shear stress from the flow as the surrounding wall. The force caused by the action of the shear stress on the head deflects a flexure system monitored by instruments such as strain gages mounted at the base of a beam. The goal of the study was to develop an understanding of the effects that the geometric design and installation parameters of the sensor have on the surrounding flow and the ability of the sensor to reflect the undisturbed shear stress value. Disruption of the external flow due to poor design and/or improper installation of the sensor can take the form of intrusion into the flow, recession into the wall, and/or tilted alignment of the sensor such that the head is not flat in the plane of the wall, as well as flow into or out of the small gap surrounding the sensing head. Further, the performance of a direct measuring skin friction sensor in the presence of a pressure gradient has always been a concern. These effects are studied here with a three-dimensional, Navier-Stokes code based on a finite element method technique. Numerical solutions for cases in which one or more design parameters were varied are shown for a variety of flow situations. These situations include: (a) a laminar fully-developed channel flow at a low Reynolds number, (b) a turbulent flat plate boundary layer flow at a high Reynolds number, and (c) strong favorable and adverse pressure gradient turbulent boundary layer flows created by converging and diverging channels at high Reynolds number. Reported results for all cases include detailed flow visualization and stress field imagery, and total surface forces on the sensing head and gage flexure. Under ideal circumstances, these total forces should reflect as accurately as possible the average value of undisturbed shear stress times the exposed sensing head area (the friction force). Any deviation from this value was considered an â errorâ in the simulated measurement. The laminar channel flow case with a strong favorable pressure gradient showed the importance of proper alignment of the sensor. Protrusion or recession of the sensing head proved to be the dominant effect on resulting forces seen by the gage, changing the output by up to 15% for head protrusion and 10% for head recession for misalignments up to +/-1% of the head diameter. The thickness of the lip on the edge of the head also proved to have a significant effect on the output, with a smaller lip thickness generally showing better performance than a large one. Zero lip thickness indicated accuracy to within 1% of the desired wall shear result, since the pressure differences had little influence on the sensing head. Finally, the assumption of a linear pressure variation from the surface to the cavity along the lip as has been suggested in the past was investigated. The results indicate that the linear assumption works well only for large ratios of lip thickness to gap size, a fact which is correlated with previous experimental results. For the turbulent external flat plate case, misalignment remained the dominant effect on the sensor response. Results indicated that, in general, protrusion is more costly than the same level of recession, and a protrusion of +1% of the head diameter was shown to cause in excess of 100% error in indicated wall shear output. Both protrusion and recession produced large variations in both force and moment on the sensing flexure, but the outcome was that for protrusion the errors caused by these two effects tended to sum together, while for recession they tended to partially cancel out. The gap size played an increased role in the high Reynolds number boundary layer cases. Gap sizes of 1.67% up to 6.67% of the head diameter were studied and were shown to produce output errors between 4% and 22% (with larger errors corresponding to larger gap sizes), thus showing the importance of minimizing the gap for high Reynolds number flows. The lip was shown to have no significant effect for a flow without a pressure gradient. Finally, the favorable and adverse pressure gradient flows showed reasonable performance of the skin friction gage. Errors in output were shown to be -6% for the favorable pressure gradient case and 17% for the adverse pressure gradient case. Only the baseline gage design was studied for these situations, but the results from the two cases indicate that further reducing the lip thickness may not improve the performance of the gage. The error in output was caused almost entirely by applied moment for the adverse pressure gradient, while the applied force and applied moment had a cancellation effect in the favorable pressure gradient case. As a general result, the use of computational fluid dynamics has been shown to be an effective tool in the design and analysis of skin friction gages. Using a computational approach has the advantage of being able to resolve the small, confined gap regions of the gage, providing information that has been shown to be unavailable from previous experimental studies. This work has contributed to a much better understanding of the detailed flow over, in, and around skin friction gages. This will lead to improved gage design and reduced uncertainty in these important measurements.
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Gaic, Pierre. "Developpement et mise au point d'un systeme de mesure couplee des tailles et vitesses des particules au sein d'un ecoulement diphasique disperse." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13300.

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Mise au point et developpement d'une methode optique de mesure couplee des tailles et vitesses des particules au sein d'un ecoulement diphasique disperse. Confection d'un prototype complet utilise pour etudier le nuage de gouttelettes produit par un injecteur pneumatique
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Books on the topic "Flow measurement method"

1

Pool, D. R. Measurement of ground-water storage change and specific yield using the temporal-gravity method near Rillito Creek, Tucson, Arizona. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Pool, D. R. Measurement of ground-water storage change and specific yield using the temporal-gravity method near Rillito Creek, Tucson, Arizona. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Pool, D. R. Measurement of ground-water storage change and specific yield using the temporal-gravity method near Rillito Creek, Tucson, Arizona. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Pool, D. R. Measurement of ground-water storage change and specific yield using the temporal-gravity method near Rillito Creek, Tucson, Arizona. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Pool, D. R. Measurement of ground-water storage change and specific yield using the temporal-gravity method near Rillito Creek, Tucson, Arizona. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Pool, D. R. Measurement of ground-water storage change and specific yield using the temporal-gravity method near Rillito Creek, Tucson, Arizona. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Orchard, Richard D. New method for measuring water seepage through salmon spawning gravel. Portland, Or: U.S. Dept. of Agriculture, Pacific Northwest Research Station, 1988.

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Gajewski, Juliusz B. Electrostatic induction in two-phase gas-solid flow measurements: 50 years of a measurement method. Wroclaw: Oficyna Wydawnicza Politechniki Wroclawskiej, 2010.

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Jemsek, J. In-situ measurement of thermal conductivity using the continuous-heating line source method and WHOI outrigged probe. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1985.

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Jemsek, J. In-situ measurement of thermal conductivity using the continuous-heating line source method and WHOI outrigged probe. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1985.

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Book chapters on the topic "Flow measurement method"

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Drayer, B. P., and R. E. Albright. "Regional Cerebral Blood Flow: The Xenon CT Method." In Cerebral Blood Flow and Metabolism Measurement, 328–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70054-5_51.

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Kohlmeyer, K. "The Intraarterial Xenon 133 Method: Principles and Clinical Application." In Cerebral Blood Flow and Metabolism Measurement, 1–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70054-5_1.

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Risberg, J. "Application of the Nontraumatic Xenon 133 Method in Neuropsychiatry." In Cerebral Blood Flow and Metabolism Measurement, 72–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70054-5_10.

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Moțit, Horia Mihai. "Principle of the New Flow Measurement Method." In Fundamentals of Reaction Flowmeters, 5–6. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003182191-2-3.

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Inoue, M., M. Masuda, T. Muraishi, and Y. Hyakutake. "Temperature Measurement of Transonic Nozzle Flow by Laser-Induced Fluorescence Method." In Flow Visualization VI, 525–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_92.

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Obrist, W. D., and W. E. Wilkinson. "Stability and Sensitivity of CBF Indices in the Noninvasive 133Xe Method." In Cerebral Blood Flow and Metabolism Measurement, 30–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70054-5_4.

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Seylaz, J., and P. Meric. "Two-Dimensional Measurements of rCBF by the Intravenous Xenon 133 Method." In Cerebral Blood Flow and Metabolism Measurement, 37–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70054-5_5.

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Schultheiss, R., F. Assad, E. Leniger-Follert, G. Pfeiffer, H. Wassmann, and R. Wüllenweber. "Measurement of Tissue PO2 on the Brain Surface: Clinical Application of the Polarographic Method." In Cerebral Blood Flow and Metabolism Measurement, 487–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70054-5_72.

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Stokely, E. M., M. D. Devous, and F. J. Bonte. "Multiple Parameter Estimation from Tomographic Inert Gas Clearance Curves: A Modification on the Double Integral Method." In Cerebral Blood Flow and Metabolism Measurement, 344–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70054-5_52.

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Murata, Shigeru, and Hiroshi Shimada. "Measurement of Unsteady Separated Flows on a Blunt Plate by a Fourier Transfrom Method." In Flow Visualization VI, 710–14. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_126.

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Conference papers on the topic "Flow measurement method"

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Yang, Zifeng, Hongtao Yu, George P. Huang, and Bryan Ludwig. "Biological Flow Measurement using Optical Flow Method." In 31st AIAA Aerodynamic Measurement Technology and Ground Testing Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-2869.

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Liu, Tianshu, Bo Wang, Bo Wang, and S. Woodiga. "Physics-Based Optical Flow Method in Global Flow Diagnostics." In 27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-4361.

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Glomb, Grzegorz, and Grzegorz Swirniak. "A hybrid method for velocity field of fluid flow estimation based on optical flow." In Optical Measurement Systems for Industrial Inspection XI, edited by Peter Lehmann, Wolfgang Osten, and Armando Albertazzi Gonçalves. SPIE, 2019. http://dx.doi.org/10.1117/12.2525711.

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Honghao Chen, Xianhe Zhao, Xiaoqin Li, and Xiaoyan Shi. "A method of flow measurement in draft tube." In 2014 ISFMFE - 6th International Symposium on Fluid Machinery and Fluid Engineering. Institution of Engineering and Technology, 2014. http://dx.doi.org/10.1049/cp.2014.1200.

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Jianling, Qu, Sun Wenzhu, Hao Shiyong, Zhou Yuping, and Gao Feng. "Feature extraction method for fuel flow estimation." In 2013 IEEE 11th International Conference on Electronic Measurement & Instruments (ICEMI). IEEE, 2013. http://dx.doi.org/10.1109/icemi.2013.6743203.

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Veres, S., and D. Ionescu. "A Per-Flow Measurement and Estimation Method for DiffServ Implementations." In IEEE Instrumentation and Measurement Technology Conference. IEEE, 2006. http://dx.doi.org/10.1109/imtc.2006.328470.

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Frollo, I., A. Krafcik, D. Gogola, T. Dermek, and L. Baciak. "Ions Flow Dynamics Research Using Fast Magnetic Resonance Imaging Method." In 2019 12th International Conference on Measurement. IEEE, 2019. http://dx.doi.org/10.23919/measurement47340.2019.8780083.

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Zheng, Dandan, Mi Wang, Jun Dong, and Ying Xu. "Simulation Method for Ultrasonic Attenuation in Droplet Flow." In 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2021. http://dx.doi.org/10.1109/i2mtc50364.2021.9459860.

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Zhang, Fusheng, and Feng Dong. "A measurement method of slug flow velocity of gas-liquid two-phase flow in horizontal pipe." In 2010 IEEE Instrumentation & Measurement Technology Conference Proceedings. IEEE, 2010. http://dx.doi.org/10.1109/imtc.2010.5488229.

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Zheng, DanDan, MengXu Zhai, and Jiayu Hu. "Study on the measurement method of wet gas flow velocity by ultrasonic flow meter." In 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2021. http://dx.doi.org/10.1109/i2mtc50364.2021.9459885.

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Reports on the topic "Flow measurement method"

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Kyllönen, Katriina, Karri Saarnio, Ulla Makkonen, and Heidi Hellén. Verification of the validity of air quality measurements related to the Directive 2004/107/EC in 2019-2020 (DIRME2019). Finnish Meteorological Institute, 2020. http://dx.doi.org/10.35614/isbn.9789523361256.

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This project summarizes the results from 2000–2020and evaluates the trueness andthequality control (QC) procedures of the ongoing polycyclic aromatic hydrocarbon (PAH)and trace element measurements in Finlandrelating to Air Quality (AQ) Directive 2004/107/EC. The evaluation was focused on benzo(a)pyrene and other PAH compounds as well as arsenic, cadmium and nickel in PM10and deposition. Additionally, it included lead and other metals in PM10and deposition, gaseous mercury and mercury deposition, andbriefly other specificAQ measurements such as volatile organic compounds (VOC)and PM2.5chemical composition. This project was conducted by the National Reference Laboratory on air quality and thiswas the first time these measurements were assessed. A major part of the project was field and laboratory audits of the ongoing PAH and metal measurements. Other measurements were briefly evaluated through interviews and available literature. In addition, the national AQ database, the expertise of local measurement networks and related publications were utilised. In total, all theseven measurement networks performing PAH and metal measurements in 2019–2020took part in the audits. Eleven stations were audited while these measurements are performed at 22 AQ stations in Finland. For the large networks, one station was chosen to represent the performance of the network. The audits included also six laboratories performing the analysis of the collected samples. The audits revealed the compliance of the measurements with the AQ Decree 113/2017, Directive 2004/107/EC and Standards of the European Committee for Standardization(CEN). In addition, general information of the measurements, instruments and quality control procedures were gained. The results of the laboratory audits were confidential,but this report includes general findings, and the measurement networks were informed on the audit results with the permission of the participating laboratories. As a conclusion, the measurementmethodsusedwere mainly reference methods. Currently, all sampling methods were reference methods; however, before 2018 three networks used other methods that may have underestimated concentrations. Regarding these measurements, it should be noted the results are notcomparable with the reference method. Laboratory methods were reference methods excluding two cases, where the first was considered an acceptable equivalent method. For the other, a change to a reference method was strongly recommended and this realized in 2020. For some new measurements, the ongoing QC procedures were not yet fully established, and advice were given. Some networks used consultant for calibration and maintenance, and thus theywere not fully aware of the QC procedures. EN Standards were mostly followed. Main concerns were related to the checks of flow and calculation of measurement uncertainty, and suggestions for improvement were given. When the measurement networks implement the recommendations given inthe audits, it can be concluded that the EN Standards are adequately followed in the networks. In the ongoing sampling, clear factors risking the trueness of the result were not found. This applies also for the laboratory analyses in 2020. One network had concentrations above the target value, and theindicative measurementsshould be updated to fixed measurements.
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Walker, Iain, and Chris Stratton. Laboratory Evaluation of Air Flow Measurement Methods for Residential HVAC Returns. Office of Scientific and Technical Information (OSTI), July 2015. http://dx.doi.org/10.2172/1220523.

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Walker, Iain, and Chris Stratton. LABORATORY EVALUATION OF AIR FLOW MEASUREMENT METHODS FOR RESIDENTIAL HVAC RETURNS. Office of Scientific and Technical Information (OSTI), February 2015. http://dx.doi.org/10.2172/1242416.

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Walker, Iain, and Chris Stratton. Laboratory Evaluation of Air Flow Measurement Methods for Residential HVAC Returns for New Instrument Standards. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1220524.

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Evaluation of a Method of Estimating Low-Flow Frequencies from Base-Flow Measurements at Indiana Streams. US Geological Survey, 2000. http://dx.doi.org/10.3133/wri004063.

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