Liquid and slurry flow measurement using correlation techniques.

by Kong-ting Lee in Bradford

Written in English
Published: Downloads: 431
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Edition Notes

Ph. D. thesis. Typescript.

The Physical Object
Pagination1 vol
ID Numbers
Open LibraryOL13689999M

  To study the influence of particle concentration on the hydrodynamics of bubble‐column slurry reactors operating in the heterogeneous flow regime, experiments were carried out in , , and ‐m‐dia. columns using paraffinic oil as the liquid phase and slurry concentrations of . Void fraction is one of the most important parameters for the modeling and characterization of two-phase flows. This manuscript presents an overview of void fraction measurement techniques, experimental databases and correlations, in the context of microchannel two-phase flow applications. Void fraction measurement techniques were reviewed and the most suitable techniques for microscale. An active cross-correlation technique using an amplitude demodulation scheme can measure the flow velocity of the coal slurry with a resolution of 3%. Flow disturbances in the coal slurry, which are received by transducers separated by cm and the cross-correlation have frequency contents primarily more» in the range of 20 to 50 Hz. A slurry consists of raw salt in a brine solution. Experiments indicate that this slurry weighs kg/m 3). Calculate the concentration of solids by weight and by volume and the volume ratio. Use kg/m 3 for the density of salt and kg/m 3 for the density of brine. Calculations: Input: Slurry Density, ρ m = kg/m 3 Liquid Density.

  For turbulent flow (Re [greater than] 2,), the pressure loss is calculated using equation (2), but the slurry is treated as a pseudo-homogenous liquid, and slurry viscosity and density are used to calculate Re. An experimental investigation was carried out on the transport of solid liquid mixture through pipelines. The principal aim of this was to study how to transport slurries through pipeline systems. The experimental tests include measurements of main parameters affecting transport of solid liquid mixture, like sand slurry and mud slurry. However, slurry critical velocity seems to be the most prevalent objective measure to prevent solids deposition in transfer lines. The following critical velocity correlations from the literature are investigated: Durand (), Spells (), Sinclair (), Zandi and Gavatos (), Babcock (), Shook more» (), and Oroskar and.   The study highlights the critical quality of VS in cow manure and the critical quantity of VS in pig slurry which results in low viability of biogas production using animal slurry. The very high concentration of lignin in cattle and dairy cow manure indicates that there is a need of pretreatment either to reduce the influence of lignin by.

This paper describes a technique for determining to what extent each mechanism is active in any given flow. At present, the project is awaiting the completion of a slurry pipe loop in which to perform the experiments. The proposed method involves the use of special pressure transducers that measure the pressure exerted only by the particle impacts.   Mucus flow imaging by cross-correlation. Imaging airway mucus flow is challenging for several reasons. Mucus flow is predominantly transverse to the OCT beam axis in typical imaging geometries, but transverse flows are not possible to measure with traditional Doppler OCT techniques . A State-of-the-Art report on instrumentation needs for coal conversion demonstration plants indicated that acoustic/ultrasonic techniques may be applied to measure two-phase flows found in coal conversion processes. Later theoretical feasibilities studies on the feasibility of acoustic/ultrasonic. C(t) is concentration in ppb, C(0) is the initial concentration in the measurement cycle, Q is the air flow through the flux chamber in L/min, V is the volume of applied liquid, K H is the Henry's law constant of neutral H 2 S in atm Lmol −1, R is the gas constant ( L atm mol −1 K −1) and T is temperature in K. For these.

Liquid and slurry flow measurement using correlation techniques. by Kong-ting Lee Download PDF EPUB FB2

Eissa M. Al-Safran, Probabilistic modeling of slug frequency in gas/liquid pipe flow using the Poisson probability theory, Journal of Petroleum Science and Engineering, /,Cited by: A total of 6 experimental tests were conducted.

The equivalent liquid model was adopted to validate in-situ volumetric solids fraction and calculate the slip velocity. The results show that the ERT technique can be used in conjunction with an electromagnetic flow meter as a way of measurement of slurry flow rate in a vertical pipe by: There is a tendency to make flow measurement a highly theoretical and technical subject but what most influences quality measurement is the practical application of meters, metering principles, and metering equipment and the use of Liquid and slurry flow measurement using correlation techniques.

book equipment that can continue to function through the years with proper maintenance have the most influence in obtaining quality : $ Comparison of noise reduction methods in radiometric correlation measurements of two-phase liquid-gas flows of flow rate measurement using techniques.

The book reviews in 15 chapters the. Multiphase flow measurement techniques are required to monitor slurry transport in industrial processes. Monitoring methods are used to ensure that the slurry is transported under specific conditions, and as an indicator of potential by: 4.

Flow Measurement Page 3 Rev 9/xx/06 Mitchell Cottrell device that has been in use for measu hese plates are generally installed by trapping it e plate, he calculation for incompressible (liquid) flow is The equivalent of the notch weir in a tube would be an orifice plate.

This flow device is. Printed in Great Britain, ESTIMATION AND REDUCTION OF ERRORS IN FLOW MEASUREMENTS WHICH USE CROSS-CORRELATION TECHNIQUES H. Bazerghi (Ecole Polytechnique, Montreal, Quebec) K.J.

Serdula (Atomic Energy of Canada Limited, Chalk River, Ontario) ABSTRACT Propagation of inherent inhomogeneities or tracers in flowing liquids is used to measure flow. Beck M S and Ong K H b Slurry flow velocity, concentration and particle size measurement using flow noise and correlation techniques Measurement and Control 8 Crossref Google Scholar Beck M S and Kaghazchi B Remote level and velocity measurement of rivers and open channels by analysis of random signals from surface waves IEE.

The main operational principle that dual-plane electrical resistance tomography (ERT) is combined with the correlation measurement technique to carry out the two-phase flow measurement, is shown in Fig.

Download: Download full-size image; Fig. The measurement system of gas phase transient flow-rate using dual-plane ERT. Yanzhi Pan, Yugao Ma, Shanfang Huang, Pengman Niu, Dong Wang, Jianhua Xie, A new model for volume fraction measurements of horizontal high-pressure wet gas flow using gamma-based techniques, Experimental Thermal and Fluid Science, /rmflusci, 96.

Hiroshi TAKAHASHI, A Progress of Slurry Transport Study and Future Prospect on Solid-Liquid Flow Study, JAPANESE JOURNAL OF MULTIPHASE FLOW, /jjmf, 31, 2.

Under the conditions of low flow rate and strong noise, the current electromagnetic flowmeter (EMF) cannot satisfy the requirement for measurement or separate the actual flow signal and interference signal accurately. Correlation detection technology can reduce the bandwidth and suppress noise effectively using the periodic transmission of signal and noise randomness.

K.H. Ong, M.S. BeckSlurry flow velocity, concentration and particle size measurement using flow noise and correlation techniques Measur.

Control, 8 (), pp. Ong KH and Beck MS () Slurry Flow Velocity, Concentration and Particle Size Measurement Using Flow Noise and Correlation Techniques. Trans. Inst., Measurement.

Selection and Optimization of Dispersant in Ceramic Slurry Processing by Different Techniques: Comparison, Correlation, and Standardization Bimal P. Singh Colloids and Materials Chemistry Group, Institute of Minerals and Materials Technology, Bhubaneswar (Council of Scientific and Industrial Research), Orissa, India Correspondence bpsingh This delay equals the time it takes flow discontinuities to travel between the two measuring locations and can be obtained by cross-correlating the two flow signals and finding the position of the correlation peak.

Slurry flowmetering using correlation "Slurry flowmetering using correlation techniques." Thesis., University of Cape Town. WEIR SLURRY PUMPING MANUAL iv–1 Symbols used The terms slurry and mixture in this Manual are used interchangeably to describe a mix of any loose solids, made up in any proportions and combinations of any particle sizes and any conveying subscript w refers to densities and specific gravities of liquids – mostly, but not exclusively, water.

More recently, [18] adopted a strategy to analyse slurry flow regimes based on the the direct interpretation of ERT measurement to identify homogeneous and heterogeneous flow without using. Multiphase flow measurement techniques are required to monitor slurry transport in industrial processes.

Monitoring methods are used to ensure that the slurry is transported under specific. However, a variety of advanced equipment can also be used to sense stage and measure streamflow.

In the simplest method, a current meter turns with the flow of the river or stream. The current meter is used to measure water velocity at predetermined points (subsections) along a marked line, suspended cableway, or bridge across a river or stream.

The flow is the mass or volume of gas or liquid per unit time, which is passing through the section of the channel of flow measurement device. The flow can be measured with two flow rates – volumetric and mass flow rates (liters per unit of time or kilograms per unit of time).

Then, the flow of gas or liquid is measured by flow meters. The behavior of horizontal solid−liquid (slurry) pipeline flows was predicted using a transient three-dimensional (3D) hydrodynamic model based on the kinetic theory of granular flows.

Computational fluid dynamics (CFD) simulation results, obtained using a commercial CFD software package, ANSYS-CFX, were compared with a number of experimental data sets available in the literature. The. The results show that the ERT technique can be used in conjunction with an electromagnetic flow meter as a way of measurement of slurry flow rate in a vertical pipe flow.

However it should be emphasized that the EFM results must be treated with reservation when the flow pattern at the EFM mounting position is a non-homogenous flow.

method of measuring slurry flow is differential pressure across a primary flow element. The choice of primary flow elements is limited. Pitot tubes are unsuitable due to clogging. Orifice plates face this problem with the additional complication of erosion of the critical orifice bore. Mass flow measurement using corolis meters is used in low.

Kinds and units of measurement. Both gas and liquid flow can be measured in physical quantities of kind volumetric or mass flow rates, with units such as liters per second or kilograms per second, respectively.

These measurements are related by the material's density of a liquid is almost independent of conditions. This paper presents the correlation between the difference of the dispersion state of particles such as LiCoO 2 and acetylene black in the slurries and the electrochemical behavior.

Three different preparation processes were applied to achieve the different dispersion state of particles in slurries, and thus obtained slurries are characterized by rheological measurement.

The algorithm has been applied for prediction of pressure drop of solid liquid slurry flow. A comparison with selected correlations in the literature showed that the developed SVR correlation. Different measurement techniques have been used to investigate the gas-liquid-solid flow in slurry bubble columns, for example, visualization techniques (e.g., Lau et al., ), tomographic.

Parul Tyagi, Vivek V. Buwa, Dense gas–liquid–solid flow in a slurry bubble column: Measurements of dynamic characteristics, gas volume fraction and bubble size distribution, Chemical Engineering Science, /,(), (). Many techniques are used to ensure the liquid flow rate measuring device is performing correctly.

Depending on the requirements of the flow meter and the environment where it is being used, testing of liquid flow rate measuring devices can occur via. Overview. Abrasive blasting, more commonly known as sandblasting, is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface or remove surface contaminants.A pressurised fluid, typically compressed air, or a centrifugal wheel is used to propel the blasting material (often.

Might I suggest using a coriolis mass flow meter. It will serve you two purposes in your application. The mass measurement for the rate and total of your slurry and the second would be a concentration measurement using the density measurement of the mass meter. Here you can control the quality make up of the liquid.Reliably measure the flow of clean liquids using a unique digital correlation technique.

SX40 Dedicated Dual Frequency Doppler (DFD) Flowmeter Reduce errors in the flow measurement of fluids containing particulates by combining Dual Frequency Doppler .