scholarly journals Orbital spectrum analysis of non-axisymmetric perturbations of the guiding-center particle motion in axisymmetric equilibria

2016 ◽  
Vol 23 (3) ◽  
pp. 032507
Author(s):  
P. A. Zestanakis ◽  
Y. Kominis ◽  
G. Anastassiou ◽  
K. Hizanidis
Keyword(s):  
Spectrum Analysis ◽  
Particle Motion ◽  
Center Particle ◽  
Axisymmetric Perturbations

A Study on Polymer Particle Flow in a Disk Zone of a Screw-Disk Extruder

2014 ◽  
Vol 35 (1) ◽  
pp. 121-135 ◽  
Author(s):  
Tomasz Rydzkowski ◽  
Iwona Michalska-Pożoga
Keyword(s):  
Mechanical Properties ◽  
Computer Simulations ◽  
Particle Motion ◽  
Polymer Melt ◽  
Experimental Tests ◽  
Polymer Particle ◽  
Particle Flow ◽  
Material Particle ◽  
Motion Trajectories ◽  
Stretching Effect

Abstract The paper presents the summary of research on polymer melt particle motion trajectories in a disc zone of a screw-disk extruder. We analysed two models of its structure, different in levels of taken simplifications. The analysis includes computer simulations of material particle flow and results of experimental tests to determine the properties of the resultant extrudate. Analysis of the results shows that the motion of melt in the disk zone of a screw-disk extruder is a superposition of pressure and dragged streams. The observed trajectories of polymer particles and relations of mechanical properties and elongation of the molecular chain proved the presence of a stretching effect on polymer molecular chains.

ANALYSIS OF PARTICLE MOTION IN FRICTION SEPARATOR

2018 ◽  
Vol 4 ◽  
pp. 197-203
Author(s):  
V.Ya. Potapov ◽  
◽  
V.N. Makarov ◽  
V.V. Potapov ◽  
N.V. Makarov ◽  
...  
Keyword(s):  
Particle Motion
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