Suppressing Natural Convection for Self-diffusion Measurement in Liquid Pb Using Shear Cell Technique by Stable Density Layering of Isotopic Concentration

Author(s):  
Masato Shiinoki ◽  
Yuki Nishimura ◽  
Kanemaru Noboribayashi ◽  
Shinsuke Suzuki
2018 ◽  
Vol 49 (6) ◽  
pp. 3357-3366 ◽  
Author(s):  
Masato Shiinoki ◽  
Nao Hashimoto ◽  
Hideto Fukuda ◽  
Yuki Ando ◽  
Shinsuke Suzuki
Keyword(s):  

Author(s):  
Shu-San Hsiau

This paper tends to review the experiments performed in a shear cell device at National Central University. The influences of wall conditions and particle solid fractions were investigated. The glass spheres with a mean diameter of 3 mm were used as granular materials. Three bi-directional stress gages were installed to measure the normal and shear stresses along the upper wall. The image processing technology and particle tracking method were employed to measure the average and fluctuation velocities in the streamwise and the transverse directions. By tracking the movements of particles continually, the variation in the mean-square diffusive displacements with time was plotted and the self-diffusion coefficient was determined. The self-diffusion coefficients in the streamwise direction were much higher than those in the transverse direction. Besides the fundamental observations in a shear device, this paper will briefly describe the technology of “moving granular bed filter” developed at National Central University. This technology is mainly developed for high temperature gas cleanup.


1971 ◽  
Vol 42 (2) ◽  
pp. 534-535 ◽  
Author(s):  
Z. Hadari ◽  
M. Kroupp ◽  
Y. Wolfson

1976 ◽  
Vol 31 (8) ◽  
pp. 1024 ◽  
Author(s):  
D. H. Kurlat ◽  
M. Rosen ◽  
G. Quintana

Abstract By the shear cell technique, the self-diffusion coefficient (DSn) of tin in a liquid Sn - 38.1 wt% Pb alloy has been measured in the temperature range 466 to 786 K. The slope of the DSn vs. T curve decreases up to about 573 K, where it gets constant. This behaviour may be explained by the cluster hypothesis.


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