Approximate Pore-Level Model for Apparent Viscosity of Polymer-Enhanced Foam in Porous Media

2006 ◽  
Author(s):  
Chun Huh ◽  
William Richard Rossen
Keyword(s):  
Porous Media ◽  
Apparent Viscosity ◽  
Level Model ◽  
Pore Level ◽  
Foam In Porous Media

Application of Meshless Pore-Level Model to Pyrolysis and Synthesis of Nuclear Fuels

2007 ◽  
Author(s):  
Xiaolin Wang ◽  
Hui Zhang ◽  
Lili Zheng
Keyword(s):  
Material Processing ◽  
Transport Phenomena ◽  
Nuclear Material ◽  
Processing Technique ◽  
System Level ◽  
Scale Model ◽  
Nuclear Fuels ◽  
Particle Hydrodynamics ◽  
Level Model ◽  
Pore Level

Uranium-ceramic nuclear fuels can be fabricated through pyrolysis-based materials processing technique. This technique requires lower energy compared to sintering route. During the fabrication process, the source material changes composition continuously and chemical reactions and transport phenomena vary accordingly. Therefore, to obtain such nuclear fuel materials with high uniformity of microstructure/species without crack, transport phenomena in the material processing needs to be better understood. A system-scale model has been developed to account for the pyrolysis-based uranium-ceramic nuclear material processing in our prior work. In this study, a pore-scale numerical model based on Smoothed Particle Hydrodynamics (SPH) will be described for modeling the synthesis of SiC matrix and U3O8. The system-level model provides thermal boundary conditions to the pore-level model. The microstructure and compositions of the produced composites will be studied. Since the control of process temperature plays an important role in the material quality, the effects of heating rate and U3O8 particle size and volume on species uniformity and microstructure are investigated.

scholarly journals Experimental tracking of the evolution of foam in porous media

1996 ◽  
Author(s):  
D Cohen ◽  
T.W. Patzek ◽  
C.J. Radke
Keyword(s):  
Porous Media ◽  
Foam In Porous Media

Image Analysis of a Moving Bubble Train in a Tube

2014 ◽  
Vol 487 ◽  
pp. 440-443
Author(s):  
Zhan Xu Wang
Keyword(s):  
Porous Media ◽  
Image Analysis ◽  
Cross Section ◽  
Cross Sections ◽  
Test Tube ◽  
Visual Images ◽  
Total Length ◽  
Foam In Porous Media

A tube with varying cross sections can capture some essential features of the motion of foam in porous media. In this paper, experiments were carried out concerning a moving bubbles train through cylindrical ducts with sinusoidal cross-section. The test tube has total length of 1.14 m and has constrictions at interval of 0.0095 m. The visual images of a single lamella motion were recorded and were interpreted. It is found the lamella decelerates in the diverging portion while accelerates in the converging part of the tube.

Seepage Ability of High-Pressure Hot Composite Foam in Porous Media

2010 ◽  
Vol 22 (1) ◽  
pp. 90-95 ◽  
Author(s):  
Ke-liang Wang ◽  
Shou-cheng Liang ◽  
Xin-qiang Yuan ◽  
Jin-feng Chen
Keyword(s):  
High Pressure ◽  
Porous Media ◽  
Composite Foam ◽  
Foam In Porous Media
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