Journal
PHYSICAL REVIEW LETTERS
Volume 111, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.064501
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Funding
- NSF [DMR-1006546]
- MRSEC [DMR-0820484]
- Advanced Energy Consortium
- America, Inc.
- BG Group
- Petrobras
- Schlumberger
- Shell
- Total
- ConocoPhillips
- Harvard College Research Program
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1006546] Funding Source: National Science Foundation
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We use confocal microscopy to directly visualize the spatial fluctuations in fluid flow through a three-dimensional porous medium. We find that the velocity magnitudes and the velocity components both along and transverse to the imposed flow direction are exponentially distributed, even with residual trapping of a second immiscible fluid. Moreover, we find pore-scale correlations in the flow that are determined by the geometry of the medium. Our results suggest that despite the considerable complexity of the pore space, fluid flow through it is not completely random.
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