Determination of flow velocities causing blowing and movement of solid particles

1987 ◽  
Vol 27 (6) ◽  
pp. 855-860 ◽  
Author(s):  
A. Azizov ◽  
V. R. Toshov
Keyword(s):  
Solid Particles ◽  
Flow Velocities

scholarly journals Determination of macro-scale soil properties from pore-scale structures: model derivation

2018 ◽  
Vol 474 (2209) ◽  
pp. 20170141 ◽  
Author(s):  
K. R. Daly ◽  
T. Roose
Keyword(s):  
Pore Space ◽  
Solid Particles ◽  
Underlying Structure ◽  
Pore Scale ◽  
Homogenization Procedure ◽  
Macro Scale ◽  
Model Derivation ◽  
Scale Structures ◽  
Homogenization Scheme

In this paper, we use homogenization to derive a set of macro-scale poro-elastic equations for soils composed of rigid solid particles, air-filled pore space and a poro-elastic mixed phase. We consider the derivation in the limit of large deformation and show that by solving representative problems on the micro-scale we can parametrize the macro-scale equations. To validate the homogenization procedure, we compare the predictions of the homogenized equations with those of the full equations for a range of different geometries and material properties. We show that the results differ by ≲ 2 % for all cases considered. The success of the homogenization scheme means that it can be used to determine the macro-scale poro-elastic properties of soils from the underlying structure. Hence, it will prove a valuable tool in both characterization and optimization.

Middle cerebral artery: determination of flow velocities with MR angiography.

Radiology ◽  
1991 ◽  
Vol 181 (2) ◽  
pp. 527-530 ◽  
Author(s):  
H Mattle ◽  
R R Edelman ◽  
K U Wentz ◽  
M A Reis ◽  
D J Atkinson ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Mr Angiography ◽  
Flow Velocities

Experimental Determination of Statistical Properties of Two-Phase Turbulent Motion

1960 ◽  
Vol 82 (3) ◽  
pp. 609-621 ◽  
Author(s):  
S. L. Soo ◽  
H. K. Ihrig ◽  
A. F. El Kouh
Keyword(s):  
Gas Phase ◽  
Tracer Diffusion ◽  
Statistical Properties ◽  
Solid Particles ◽  
Turbulent Motion ◽  
Two Phase ◽  
Gaseous State ◽  
Diffusion Technique ◽  
And Diffusion

Experimental methods for the determination of certain statistical properties of turbulent conveyance and diffusion of solid particles in a gaseous state are presented. Methods include a tracer-diffusion technique for the determination of gas-phase turbulent motion and a photo-optical technique for the determination of motion of solid particles. Results are discussed and compared with previous analytical results.

scholarly journals DETERMINATION OF THE REAL VALUES OF KINEMATIC INDEX CORRESPONDING TO THE MECHANICAL SEPARATION PROCESS

2017 ◽  
Vol 22 (2) ◽  
Author(s):  
EMILIAN MOȘNEGUȚU ◽  
VALENTIN NEDEFF ◽  
MIRELA PANAINTE-LEHĂDUȘ ◽  
NARCIS BÂRSAN ◽  
DANA CHIȚIMUȘ ◽  
...  
Keyword(s):  
Separation Process ◽  
Experimental Batch ◽  
Solid Particles ◽  
Common Method ◽  
The Real ◽  
Mechanical Separation

This article presents the methodology for determining the real values of kinematic indices which characterizes the mechanical separation of a mixture of solid particles. Mechanical separation of a mixture of solid-solid on surface provided with holes is the most common method of separation. To optimize equipment that performs this operation, both theoretical and practical characteristics are determined. Kinematic indices are part of the theoretical characteristics, helping to identify behavior of solid particles on a surface flat swing. Starting from an experimental batch, real values of the kinematic indices corresponding to up, down and sideways movement on the sieve were determined for the following types of real particles: grain, large grain beans, small grain beans and soybeans.

Light Transmission Model for Determination of the Refractive Index of Solid Particles in Suspensions: An Immersion Study

2011 ◽  
Vol 65 (5) ◽  
pp. 557-560 ◽  
Author(s):  
Jukka Räty ◽  
Ilpo Niskanen ◽  
Risto Myllylä ◽  
Kai-Erik Peiponen
Keyword(s):  
Refractive Index ◽  
Light Transmission ◽  
Solid Particles ◽  
Transmission Model

COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 6. KINEMATIC AND STRESSED STATES OF BLANKET DURING RESTRICTED EXTRUSION. PART 2

2021 ◽  
pp. 38-43
Author(s):  
A. L. Vorontsov ◽  
◽  
S. M. Karpov ◽  
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Plane Deformation ◽  
Flow Theory ◽  
Equation System ◽  
Extrusion Process ◽  
Thick Wall ◽  
Comprehensive Investigation ◽  
Flow Velocities

On the basis of the complete equation system of the plastic flow theory, the solution continuation of the determination problem of the kinematic and stressed states of a blanket during restricted extrusion of П-shaped brackets under conditions of plane deformation in the general case of a nonaligned placement of the punch and the die is stated. The determination of flow velocities and stresses in the area of plastic deformation, located under the punch end near the formed thick wall of the bracket has been carried out. The formulae were obtained, which are required for identification of the main parameters of the extrusion process of П-shaped products with a relatively thin horizontal bridge.

A heat pulse technique for the determination of small-scale flow directions and flow velocities in the streambed of sand-bed streams

2011 ◽  
Vol 25 (20) ◽  
pp. 3244-3255 ◽  
Author(s):  
Jörg Lewandowski ◽  
Lisa Angermann ◽  
Gunnar Nützmann ◽  
Jan H. Fleckenstein
Keyword(s):  
Heat Pulse ◽  
Small Scale ◽  
Pulse Technique ◽  
Flow Directions ◽  
Flow Velocities

Determination of Oil Core Flow Velocities and Porosities Using MRI

1992 ◽  
Author(s):  
M.A. Robinson ◽  
H.A. Deans ◽  
Sitanshu Bansal
Keyword(s):  
Core Flow ◽  
Flow Velocities

Transcutaneous determination of aortic blood-flow velocities in man

1975 ◽  
Vol 89 (5) ◽  
pp. 605-612 ◽  
Author(s):  
Lee L. Huntsman ◽  
Emmeram Gams ◽  
Curtis C. Johnson ◽  
Eugene Fairbanks
Keyword(s):  
Blood Flow ◽  
Aortic Blood Flow ◽  
Aortic Blood ◽  
Blood Flow Velocities ◽  
Flow Velocities
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