Related Experiment Video
Updated: Jul 17, 2026
05:10
A Microfluidic Platform to Study Bioclogging in Porous Media
Published on: October 13, 2022
Mechanism for clogging of microchannels
Hans M Wyss1, Daniel L Blair, Jeffrey F Morris
1Department of Physics and DEAS, Harvard University, Cambridge, Massachusetts 02138, USA.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 7, 2007
Summary
Microchannel clogging, crucial for filtration, depends on pore and particle size, not flow rate. Our findings simplify understanding of particle transport in porous media.
Area of Science:
- Fluid dynamics
- Materials science
- Chemical engineering
Background:
- Microfluidic devices are used as model porous media to study clogging.
- Clogging is investigated at low volume fractions and high flow rates, a technologically relevant regime.
Purpose of the Study:
- To investigate microchannel clogging at the single-pore level.
- To understand the factors influencing clogging in porous media.
Main Methods:
- Utilizing microfluidic devices as model porous media.
- Conducting experiments at low particle volume fractions and high flow rates.
Main Results:
- Microchannel clogging is independent of particle flow rate and volume fraction.
- The number of particles passing before clogging is proportional to the ratio of pore to particle size.
Conclusions:
- Collective effects are not significant in this clogging regime.
- A simple model accurately predicts clogging behavior based on size ratios.
