Growth of clogs in parallel microchannels
During the transport of colloidal suspensions in microchannels, the deposition of particles can lead to the formation of clogs, typically at constrictions. Once a clog is formed in a microchannel, advected particles form an aggregate upstream from the site of the blockage. This aggregate grows over...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/118347 https://orcid.org/0000-0001-5130-4862 |
| _version_ | 1811083401501868032 |
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| author | Sauret, Alban Somszor, Katarzyna Villermaux, Emmanuel Dressaire, Emilie |
| author2 | MIT Energy Initiative |
| author_facet | MIT Energy Initiative Sauret, Alban Somszor, Katarzyna Villermaux, Emmanuel Dressaire, Emilie |
| author_sort | Sauret, Alban |
| collection | MIT |
| description | During the transport of colloidal suspensions in microchannels, the deposition of particles can lead to the formation of clogs, typically at constrictions. Once a clog is formed in a microchannel, advected particles form an aggregate upstream from the site of the blockage. This aggregate grows over time, which leads to a dramatic reduction of the flow rate. In this paper, we present a model that predicts the growth of the aggregate formed upon clogging of a microchannel. We develop an analytical description that captures the time evolution of the volume of the aggregate, as confirmed by experiments performed using a pressure-driven suspension flow in a microfluidic device. We show that the growth of the aggregate increases the hydraulic resistance in the channel and leads to a drop in the flow rate of the suspensions. We then derive a model for the growth of aggregates in multiple parallel microchannels where the clogging events are described using a stochastic approach. The aggregate growths in the different channels are coupled. Our work illustrates the critical influence of clogging events on the evolution of the flow rate in microchannels. The coupled dynamics of the aggregates described here for parallel channels is key to bridge clogging at the pore scale with macroscopic observations of the flow rate evolution at the filter scale. |
| first_indexed | 2024-09-23T12:32:29Z |
| format | Article |
| id | mit-1721.1/118347 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:32:29Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1183472022-10-01T09:40:19Z Growth of clogs in parallel microchannels Sauret, Alban Somszor, Katarzyna Villermaux, Emmanuel Dressaire, Emilie MIT Energy Initiative Villermaux, Emmanuel During the transport of colloidal suspensions in microchannels, the deposition of particles can lead to the formation of clogs, typically at constrictions. Once a clog is formed in a microchannel, advected particles form an aggregate upstream from the site of the blockage. This aggregate grows over time, which leads to a dramatic reduction of the flow rate. In this paper, we present a model that predicts the growth of the aggregate formed upon clogging of a microchannel. We develop an analytical description that captures the time evolution of the volume of the aggregate, as confirmed by experiments performed using a pressure-driven suspension flow in a microfluidic device. We show that the growth of the aggregate increases the hydraulic resistance in the channel and leads to a drop in the flow rate of the suspensions. We then derive a model for the growth of aggregates in multiple parallel microchannels where the clogging events are described using a stochastic approach. The aggregate growths in the different channels are coupled. Our work illustrates the critical influence of clogging events on the evolution of the flow rate in microchannels. The coupled dynamics of the aggregates described here for parallel channels is key to bridge clogging at the pore scale with macroscopic observations of the flow rate evolution at the filter scale. American Chemical Society (Grant ACS-PRF 55845-ND9) 2018-10-04T13:39:53Z 2018-10-04T13:39:53Z 2018-10 2018-05 2018-10-01T18:00:17Z Article http://purl.org/eprint/type/JournalArticle 2469-990X http://hdl.handle.net/1721.1/118347 Sauret, Alban, et al. “Growth of Clogs in Parallel Microchannels.” Physical Review Fluids, vol. 3, no. 10, Oct. 2018. © 2018 American Physical Society https://orcid.org/0000-0001-5130-4862 en http://dx.doi.org/10.1103/PhysRevFluids.3.104301 Physical Review Fluids Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Sauret, Alban Somszor, Katarzyna Villermaux, Emmanuel Dressaire, Emilie Growth of clogs in parallel microchannels |
| title | Growth of clogs in parallel microchannels |
| title_full | Growth of clogs in parallel microchannels |
| title_fullStr | Growth of clogs in parallel microchannels |
| title_full_unstemmed | Growth of clogs in parallel microchannels |
| title_short | Growth of clogs in parallel microchannels |
| title_sort | growth of clogs in parallel microchannels |
| url | http://hdl.handle.net/1721.1/118347 https://orcid.org/0000-0001-5130-4862 |
| work_keys_str_mv | AT sauretalban growthofclogsinparallelmicrochannels AT somszorkatarzyna growthofclogsinparallelmicrochannels AT villermauxemmanuel growthofclogsinparallelmicrochannels AT dressaireemilie growthofclogsinparallelmicrochannels |