Download or read book Particle Size and Concentration Measurements in Slurries by Ultrasonic Methods written by Abhishek Shukla and published by . This book was released on 2003 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Solid Liquid Suspensions Utilizing Non Invasive Ultrasonic Measurements written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid, on-line characterization of the particle size and concentration of moderate to highly concentrated slurries is required for efficient waste remediation at the DOE complexes. This paper discusses the advancements achieved under the Environmental Management Science Program to accurately characterize high-level waste at the high concentrations expected at the DOE complexes. In addition, the results are applicable to efficient process measurement and control in many chemical and pharmaceutical manufacturing processes. Existing methods for determining the particle size and concentration of non-dilute slurries based on ultrasonic attenuation can become inaccurate due to the complex interactions of ultrasonic waves with the constituents of the slurries and the necessity for very careful transducer alignment. Two measurements that help to overcome these difficulties are the ultrasonic backscattering and diffuse field. The backscattering measurement is attractive because viscous, thermal and inertial effects have small contributions to the backscattering. In addition, the backscattering theories are simpler than attenuation theories and lend themselves to more stable inversion processes. Furthermore, the measurements of backscattering measurement do not require long travel distances and can be made with a single transducer thus eliminating alignment problems. We will present ultrasonic measurements and theoretical comparisons on solid liquid suspensions designed to elucidate the particle size and concentration at high concentration relevant to the high level waste at the DOE complexes.
Download or read book Physical Characterization of Solid Liquid Slurries at High Weight Fractions Using Optical and Ultrasonic Methods written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this proposed work is to directly address the need for rapid on-line characterization of the physical properties of HLW slurries during all phases of the remediation process, from in-tank characterization of sediments to monitoring of the concentration, particle size, and degree of agglomeration and gelation of slurries during transport. Current technologies are not capable of characterizing the HLW waste stream without dilution. The results from this work will be utilized to develop new methodologies to characterize the HLW stream in-situ. There are three tasks: (1) develop new optical and acoustic scattering measurements to provide the fundamental science needed for successful device development and implementation, (2) develop theories that describe the interrelationship between wave propagation and the physical properties of the slurry, and (3) perform inversions of the theories and compare them with the experimental measurements to non-intrusively characterize slurries.
Download or read book Physical Characterization of Solid Liquid Slurries at High Weight Fractions Utilizing Optical and Ultrasonic Methods written by Lloyd W. Burgess (Jr.) and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this proposed work is to directly address the need for rapid on-line characterization of the physical properties of HLW slurries during all phases of the remediation process, from in-tank characterization of sediments to monitoring of the concentration, particle size, and degree of agglomeration and gelation of slurries during transport. There are three tasks: (1) develop new optical and acoustic scattering measurements to provide the fundamental science needed for successful device development and implementation, (2) develop theories that describe the interrelationship between wave propagation and the physical properties of the slurry, and (3) perform inversions of the theories and compare them with the experimental measurements to non-intrusively characterize slurries.
Download or read book Particle Concentration Measurement in Slurry Flows Using Ultrasound Technique written by Venkat Mundla and published by . This book was released on 2007 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle Concentration Measurements in a Centrifugal Slurry Pump Using an A Scan Ultrasound Technique written by John Michael Furlan and published by . This book was released on 2011 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the design of slurry transport equipment used in a variety of industries, the effects of solid particle concentration on hydraulic performance and wear need to be considered. An ultrasound A-mode imaging method has been developed to obtain local particle concentration measurements in slurry flows. Acoustic properties of slurry flows including velocity, backscatter, and attenuation as a function of volume fraction of solid particles, are examined in this study using various transducers. The most suitable transducer is selected to obtain concentration measurements in slurry flows. The technique is used to obtain concentration profiles in a homogeneous (vertical flow) and a non-homogeneous (horizontal flow) slurry flow of soda lime glass beads (195 μm diameter) and water through a one inch diameter loop with solid particle concentrations ranging from 1-10 % by volume. For horizontal flow, profiles are obtained for average flow velocities of 1.2, 2.0, 3.0, and 3.5 m/s. The algorithm developed utilizes acoustic backscatter and attenuation measurements obtained from the homogeneous loop as calibration data in order to obtain concentration profiles in other (i.e. non-homogenous) flow regimes. A computational study using FLUENT is performed and a comparison is made with the experimental results. A reasonable agreement between the experimental and computational results is observed in the one inch pipe. Following transducer selection and refinement and validation of the technique, it is employed to obtain local particle concentration measurements at multiple locations within the casing of a centrifugal slurry pump. A comparison is made between the experimental results and computational results using a two phase Eulerian-Eulerian finite element model. Computational fluid dynamics (CFD) and Experimental results at locations F→I share the same trends and relative patterns for differing locations but have substantial differences in magnitude. The CFD consistently shows higher concentration magnitudes than the experimental data. These differences are most likely a result of an un-matched casing inlet concentration boundary condition.
Download or read book Investigating Ultrasonic Diffraction Grating Spectroscopy and Reflection Techniques for Characterizing Slurry Properties written by Margaret S. Greenwood and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The particle size of a slurry and the viscosity of a liquid or slurry are both difficult to measure on-line and in real time. The objectives of this research are to develop the following methods for such measurements: (1) ultrasonic diffraction grating spectroscopy (UDGS) to measure the particle size and concentration of a slurry, (2) develop theoretical models and computer codes to describe the passage of ultrasound through a grating surface in order to increase the sensitivity of the particle size measurement.
Download or read book The Measurement Of Particle Size Distribution In A Slurry Using Ultrasonic Attenuation written by Mailer P. De Wet and published by . This book was released on 1990 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrasonics written by Dale Ensminger and published by CRC Press. This book was released on 2011-09-19 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a unique and comprehensive treatment of the science, technology, and applications for industrial and medical ultrasonics, including low- and high-power implementations. The discussion of applications is combined with the fundamental physics, the reporting of the sensors/transducers, and systems for the full spectrum of industrial, nondestructive testing, and medical/bio-medical uses. It includes citations of numerous references and covers both mainstream and the more unusual and obscure applications of ultrasound.
Download or read book Challenges of Power Engineering and Environment written by Ke-fa Cen and published by Springer Science & Business Media. This book was released on 2009-03-27 with total page 1432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the proceedings of the International Conference on Power Engineering-2007. The fields of this book include power engineering and relevant environmental issues. The recent technological advances in power engineering and related areas are introduced. This book is valuable for researchers, engineers and students majoring in power engineering.
Download or read book Measurement and Characterization of Particles by Acoustic Methods Concepts and Procedures in Ultrasonic Attenuation Spectroscopy written by British Standards Institute Staff and published by . This book was released on 2006-09-29 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle size distribution, Particle size measurement, Colloids, Dispersions (chemical), Slurries, Emulsions, Ultrasonic frequencies, Ultrasonics, Spectroscopy, Chemical analysis and testing, Attenuation, Test methods, Terminology
Download or read book Measurement and Characterization of Particles by Acoustic Methods Guidelines for Linear Theory written by British Standards Institute Staff and published by . This book was released on 1913-08-31 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle size distribution, Particle size measurement, Colloids, Dispersions (chemical), Slurries, Emulsions, Ultrasonic frequencies, Ultrasonics, Spectroscopy, Chemical analysis and testing, Attenuation, Test methods, Terminology
Download or read book Ultrasonic Techniques for Fluids Characterization written by Malcolm J.W. Povey and published by Academic Press. This book was released on 1997-07-22 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive and practical guide to the use of ultrasonic techniques for the characterization of fluids. Focusing on ultrasonic velocimetry, the author covers the basic topics and techniques necessaryfor successful ultrasound measurements on emulsions, dispersions, multiphase media, and viscoelastic/viscoplastic materials. Advanced techniques such as scattering, particle sizing, and automation are also presented. As a handbook for industrial and scientific use, Ultrasonic Techniques for Fluids Characterization is an indispensable guide to chemists and chemical engineers using ultrasound for research or process monitoring in the chemical, food processing, pharmaceutical, cosmetic, biotechnology,and fuels industries. Appeals to anyone using ultrasound to study fluids Provides the first detailed description of the ultrasound profiling technique for dispersions Describes new techniques for measuring phase transitions and nucleation, such as water/ice and oil/fat Presents the latest ultrasound techniques for particle sizing in concentrated systems Explains new techniques for compressibility measurements in dispersions and fluids, including cell suspensions Contains a detailed treatment of ultrasound scattering theory Written by one of the leading researchers in the field Includes over 350 references to the primary literature
Download or read book Powder Sampling and Particle Size Determination written by T. Allen and published by Elsevier. This book was released on 2003-12-09 with total page 683 pages. Available in PDF, EPUB and Kindle. Book excerpt: Powder technology is a rapidly expanding technology and nowhere more than in particle characterization. There has been an explosion of new particle measuring techniques in the past ten year particularly in the field of on-line measurement. One of the main aims of this book is to bring the reader up-to-date with current practices. One important area of interest is the improvements in on-line light scattering instruments and the introduction of ultrasonic on-line devices. Another is the introduction of on-line microscopy, which permits shape analysis in conjunction with particle sizing.Schools of powder technology are common in Europe and Japan but the importance of this subject has only recently been recognised in America with the emergence of the Particle Research Centre (PERC) at the University of Florida in Gainsville. - Details all the latest developments in powder technology - Written by established authority on powder technology- A comprehensive text covering all aspects of powder technology and handling of particulate solids including characterization, handling and applications
Download or read book Physical Characterization of Solid Liquid Slurries at High Weight Fractions Using Optical and Ultrasonic Methods Final Report written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Remediation of highly radioactive waste is a major technical and programmatic challenge for the DOE. Rapid, on-line physical characterization of highly concentrated slurries is required for the safe and efficient remediation of 90 million gallons of high level radioactive waste (HLW), sodium bearing waste, and mixed waste. The research presented here, describes a collaborative effort between Pacific Northwest National Laboratory (PNNL) and the University of Washington to directly address the need for rapid on-line characterization of the physical properties of HLW slurries during all phases of the remediation process, from in-tank characterization of sediments to monitoring of the concentration, particle size, and degree of agglomeration and gelation of slurries during transport. Near-surface characterization of the slurry flow in the particle size range from nanometer to micrometer is examined using optical low coherence reflectometry. Volumetric characterization at depths in the slurry flow, up to several centimeters in the particle size range from the micrometer to millimeter, is realized by utilizing ultrasonic backscatter and diffuses fields. One of the strengths, the teaming up of significant talents in both experimental and theoretical optics (University of Washington) and in ultrasonics [Pacific Northwest National Laboratory (PNNL)] provides a synergistic approach to integrate these complimentary techniques. One of the benefits of this combined approach is the physical characterization of HLW over a concentration and particle size range that is broader than can be achieved with today's technology. This will avoid a costly increase in waste stream volume due to excess dilution, and will lessen chance of plugging pipes that could shut down expensive processing lines.
Download or read book Characterization of Liquids Nano and Microparticulates and Porous Bodies using Ultrasound written by Andrei S. Dukhin and published by Elsevier. This book was released on 2002-09-03 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two key words define the scope of this book: 'ultrasound' and 'colloids'. Historically, there has been little real communication between disciples of these two fields. Although there is a large body of literature devoted to ultrasound phenomenon in colloids, there is little recognition that such phenomena may be of real importance for both the development, and application, of Colloid Science. From the other side, colloid scientists have not embraced acoustics as an important tool for characterizing colloids. The lack of any serious dialogue between these scientific fields is the biggest motivation behind this book. For colloidal systems, ultrasound provides information on three important areas of particle characterization: Particle sizing, Rheology, and Electrokinetics. This book primarily targets scientists who consider colloids as their major object of interest. As such we emphasize those aspects of acoustics that are important for colloids, and thereby neglect many others. On the other hand, scientists working with ultrasound who are already familiar with the subject will find several important new developments.
Download or read book Measurement and Characterization of Particles by Acoustic Methods Guidelines for Non Linear Theory written by British Standards Institute Staff and published by . This book was released on 1917-06-28 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terminology, Test methods, Attenuation, Chemical analysis and testing, Spectroscopy, Ultrasonics, Ultrasonic frequencies, Emulsions, Slurries, Dispersions (chemical), Colloids, Particle size measurement, Particle size distribution
