Abstract
To investigate the flow characteristics of water in a porous medium with a second, stagnant, immiscible liquid phase, we experimentally studied flow of water through a bed of glass beads containing stagnant silicone oil. For imaging, two magnetic resonance imaging (MRI) techniques were used: the chemical shift imaging method and the phase-encoding method. Two-dimensional images both with and without the silicone oil showed that the water velocity profiles drastically changed because the stagnant silicone oil changed the pore structure. Significant changes in flow were also confirmed by composing eleven two-dimensional images of velocity profiles to visualize the three-dimensional flow path and the stagnant silicone oil distribution in the porous media. A statistical method was developed to clarify the relation between pore structure and fluid flow. This method showed that, when stagnant silicone oil is present, but with the same net flow of water, the reduction in rate of flow from large, oil-blocked pores is compensated by an increase in rate of flow from the larger number of small pores.
| Original language | English |
|---|---|
| Pages (from-to) | 1465-1472 |
| Number of pages | 8 |
| Journal | Measurement Science and Technology |
| Volume | 12 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2001 Sep |
| Externally published | Yes |
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Keywords
- immiscible liquid
- MRI
- Pore structure
- Porous media
- Velocity measurements
- Water flow
ASJC Scopus subject areas
- Polymers and Plastics
- Ceramics and Composites
- Materials Science (miscellaneous)
Cite this
MRI velocity measurements of water flow in porous media containing a stagnant immiscible liquid. / Okamoto, I.; Hirai, S.; Ogawa, Kuniyasu.
In: Measurement Science and Technology, Vol. 12, No. 9, 09.2001, p. 1465-1472.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - MRI velocity measurements of water flow in porous media containing a stagnant immiscible liquid
AU - Okamoto, I.
AU - Hirai, S.
AU - Ogawa, Kuniyasu
PY - 2001/9
Y1 - 2001/9
N2 - To investigate the flow characteristics of water in a porous medium with a second, stagnant, immiscible liquid phase, we experimentally studied flow of water through a bed of glass beads containing stagnant silicone oil. For imaging, two magnetic resonance imaging (MRI) techniques were used: the chemical shift imaging method and the phase-encoding method. Two-dimensional images both with and without the silicone oil showed that the water velocity profiles drastically changed because the stagnant silicone oil changed the pore structure. Significant changes in flow were also confirmed by composing eleven two-dimensional images of velocity profiles to visualize the three-dimensional flow path and the stagnant silicone oil distribution in the porous media. A statistical method was developed to clarify the relation between pore structure and fluid flow. This method showed that, when stagnant silicone oil is present, but with the same net flow of water, the reduction in rate of flow from large, oil-blocked pores is compensated by an increase in rate of flow from the larger number of small pores.
AB - To investigate the flow characteristics of water in a porous medium with a second, stagnant, immiscible liquid phase, we experimentally studied flow of water through a bed of glass beads containing stagnant silicone oil. For imaging, two magnetic resonance imaging (MRI) techniques were used: the chemical shift imaging method and the phase-encoding method. Two-dimensional images both with and without the silicone oil showed that the water velocity profiles drastically changed because the stagnant silicone oil changed the pore structure. Significant changes in flow were also confirmed by composing eleven two-dimensional images of velocity profiles to visualize the three-dimensional flow path and the stagnant silicone oil distribution in the porous media. A statistical method was developed to clarify the relation between pore structure and fluid flow. This method showed that, when stagnant silicone oil is present, but with the same net flow of water, the reduction in rate of flow from large, oil-blocked pores is compensated by an increase in rate of flow from the larger number of small pores.
KW - immiscible liquid
KW - MRI
KW - Pore structure
KW - Porous media
KW - Velocity measurements
KW - Water flow
UR - http://www.scopus.com/inward/record.url?scp=0035446899&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035446899&partnerID=8YFLogxK
U2 - 10.1088/0957-0233/12/9/312
DO - 10.1088/0957-0233/12/9/312
M3 - Article
AN - SCOPUS:0035446899
VL - 12
SP - 1465
EP - 1472
JO - Measurement Science and Technology
JF - Measurement Science and Technology
SN - 0957-0233
IS - 9
ER -