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Critical Bursts in Filtration
Filippo Bianchi1, Marcel Thielmann2, Lucilla de Arcangelis3
1Computational Physics for Engineering Materials, Institute for Building Materials, ETH Zürich, 8093 Zurich, Switzerland.
Physical Review Letters
|February 6, 2018
Summary
Particle detachment bursts in filters exhibit power-law scaling and temporal correlations, akin to self-organized critical systems. Understanding these burst statistics can improve filter and petroleum industry efficiency.
Area of Science:
- Physics
- Chemical Engineering
- Complex Systems
Background:
- Particle detachment bursts impact deep bed filter efficiency.
- Statistical properties and temporal organization of these bursts are poorly understood.
- Relevant to industrial filtration and petroleum recovery.
Purpose of the Study:
- Investigate the statistical properties of particle detachment bursts.
- Analyze the temporal organization of these events.
- Explore potential self-organized criticality in this phenomenon.
Main Methods:
- Experiments using suspensions of quartz particles in deionized water.
- Flow through a glass bead filter driven by a peristaltic pump.
- Simultaneous measurement of pressure drop, flux, and suspension solid fraction.
Main Results:
- Burst size distribution follows a power law.
- Evidence suggests a self-organized critical system.
- Temporal correlations and an analog to Omori's law were observed.
Conclusions:
- Particle detachment bursts display characteristics of self-organized criticality.
- Findings offer insights into filter performance and petroleum extraction.
- Understanding burst statistics is crucial for industrial applications.
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