Preliminary applications of cross-axis synchronous flow-through coil planet centrifuge for large-scale preparative counter-current chromatography

1988 ◽  
Vol 454 ◽  
pp. 185-193 ◽  
Author(s):  
Tian-You Zhang ◽  
Y.-W. Lee ◽  
Q.C. Fang ◽  
Rong Xiao ◽  
Yoichiro Ito
Keyword(s):  
Large Scale ◽  
Flow Through ◽  
Cross Axis ◽  
Counter Current

Large-scale separation of alkaloids from Corydalis decumbens by pH-zone-refining counter-current chromatography

2006 ◽  
Vol 1115 (1-2) ◽  
pp. 267-270 ◽  
Author(s):  
Xiao Wang ◽  
Yanling Geng ◽  
Fuwei Li ◽  
Xingang Shi ◽  
Jianhua Liu
Keyword(s):  
Large Scale ◽  
Zone Refining ◽  
Scale Separation ◽  
Counter Current

Counter-current chromatography of diaziquone by a horizontal flow-through coil planet centrifuge

1982 ◽  
Vol 252 ◽  
pp. 283-287 ◽  
Author(s):  
Rosalind D. Friedman ◽  
Hiroyuki Nakazawa ◽  
Feng-Te Edward Chou ◽  
Nicholas R. Bachur ◽  
Yoichiroito
Keyword(s):  
Horizontal Flow ◽  
Flow Through ◽  
Counter Current

scholarly journals Combined numerical and experimental study of microstructure and permeability in porous granular media

2020 ◽  
Author(s):  
Philipp Eichheimer ◽  
Marcel Thielmann ◽  
Wakana Fujita ◽  
Gregor J. Golabek ◽  
Michihiko Nakamura ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Numerical Simulations ◽  
Granular Media ◽  
Large Scale ◽  
Earth Science ◽  
Numerical Models ◽  
Effective Porosity ◽  
Flow Properties ◽  
Wide Range ◽  
Flow Through

Abstract. Fluid flow on different scales is of interest for several Earth science disciplines like petrophysics, hydrogeology and volcanology. To parameterize fluid flow in large-scale numerical simulations (e.g. groundwater and volcanic systems), flow properties on the microscale need to be considered. For this purpose experimental and numerical investigations of flow through porous media over a wide range of porosities are necessary. In the present study we sinter glass bead media with various porosities. The microstructure, namely effective porosity and effective specific surface, is investigated using image processing. We determine flow properties like hydraulic tortuosity and permeability using both experimental measurements and numerical simulations. By fitting microstructural and flow properties to porosity, we obtain a modified Kozeny-Carman equation for isotropic low-porosity media, that can be used to simulate permeability in large-scale numerical models. To verify the modified Kozeny-Carman equation we compare it to the computed and measured permeability values.

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