scholarly journals A systematic study of the dynamics of chain formation in electrorheological fluids

AIP Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 025243
Author(s):  
Dávid Fertig ◽  
Dezső Boda ◽  
István Szalai
Keyword(s):  
Systematic Study ◽  
Electrorheological Fluids ◽  
Chain Formation

Behavior of an electrorheological chain under squeeze flow

2016 ◽  
Vol 28 (4) ◽  
pp. 531-546 ◽  
Author(s):  
Michiro Akaiwa
Keyword(s):  
Electric Field ◽  
The Other ◽  
Potential Difference ◽  
Electrorheological Fluids ◽  
Compressive Deformation ◽  
Experimental Result ◽  
Squeeze Flow ◽  
Chain Formation ◽  
Constant Potential

Analysis of the load versus separation concerning electrorheological fluids between electrodes with application of a constant potential difference in squeeze mode was performed. From the result of the simulation, it was found that there are three forms as follows: an approaching state in which an upper electrode approaches its adjacent particle, compressive deformation of the particles, and buckling deformation and rupture of chain formation while the electrode approaches the outermost particle. From a comparison of the simulation result with the experimental result, the experimental result and simulation result are similar in form to each other. The array of the chain between the electrodes, just after the electric field is applied, although the load is not applied on the electrode, is composed of a group of strung-close particles and the electrodes that are out of contact with respect to the neighboring particles; after the load is applied, the spacing between the electrode and the particle becomes narrow, and the chain collapses due to buckling without each touching the other.

Quantitative parallel EELS spectrum imaging developed as a new tool in AEM

1992 ◽  
Vol 50 (2) ◽  
pp. 1202-1203
Author(s):  
Gianluigi Botton ◽  
Gilles L'espérance
Keyword(s):  
Statistical Analysis ◽  
Spatial Resolution ◽  
Personal Computer ◽  
Systematic Study ◽  
Present Author ◽  
Chemical Elements ◽  
Detection Limits ◽  
Research Groups ◽  
Quantitative Performance ◽  
Spectrum Imaging

As interest for parallel EELS spectrum imaging grows in laboratories equipped with commercial spectrometers, different approaches were used in recent years by a few research groups in the development of the technique of spectrum imaging as reported in the literature. Either by controlling, with a personal computer both the microsope and the spectrometer or using more powerful workstations interfaced to conventional multichannel analysers with commercially available programs to control the microscope and the spectrometer, spectrum images can now be obtained. Work on the limits of the technique, in terms of the quantitative performance was reported, however, by the present author where a systematic study of artifacts detection limits, statistical errors as a function of desired spatial resolution and range of chemical elements to be studied in a map was carried out The aim of the present paper is to show an application of quantitative parallel EELS spectrum imaging where statistical analysis is performed at each pixel and interpretation is carried out using criteria established from the statistical analysis and variations in composition are analyzed with the help of information retreived from t/γ maps so that artifacts are avoided.

A SYSTEMATIC STUDY OF 2s2 2pk - 2s2pk+l - 2pk+2 TRANSITIONS IN MULTIPLY-CHARGED Cl IONS.

1979 ◽  
Vol 40 (C1) ◽  
pp. C1-208-C1-210 ◽  
Author(s):  
J. P. Forester ◽  
D. J. Pegg ◽  
P. M. Griffin ◽  
G. D. Alton ◽  
S. B. Elston ◽  
...  
Keyword(s):  
Systematic Study ◽  
Multiply Charged

The solubility of calcium carbonate  in green liquor handling systems

TAPPI Journal ◽  
2019 ◽  
Vol 18 (10) ◽  
pp. 595-602
Author(s):  
ALISHA GIGLIO ◽  
VLADIMIROS G. PAPANGELAKIS ◽  
HONGHI TRAN
Keyword(s):  
Calcium Carbonate ◽  
Systematic Study ◽  
Kraft Pulp ◽  
Thermodynamic Simulation ◽  
Solubility Data ◽  
Pulp Mills ◽  
Persistent Problem ◽  
Green Liquor ◽  
Kraft Pulp Mills ◽  
Salt Systems

The formation of hard calcite (CaCO3) scale in green liquor handling systems is a persistent problem in many kraft pulp mills. CaCO3 precipitates when its concentration in the green liquor exceeds its solubility. While the solubility of CaCO3 in water is well known, it is not so in the highly alkaline green liquor environment. A systematic study was conducted to determine the solubility of CaCO3 in green liquor as a function of temperature, total titratable alkali (TTA), causticity, and sulfidity. The results show that the solubility increases with increased temperature, increased TTA, decreased causticity, and decreased sulfidity. The new solubility data was incorporated into OLI (a thermodynamic simulation program for aqueous salt systems) to generate a series of CaCO3 solubility curves for various green liquor conditions. The results help explain how calcite scale forms in green liquor handling systems.

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