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Capturing aerosol droplets with fibers.
Soft Matter 2019; 15(35):6946-6951SM

Abstract

Capturing droplets from a stream with a fibrous material is a well-known and well-used process, from coalescence filters to fog harvesting. In this paper, we report experimental measurements of collection efficiency with a model system consisting in an array of vertical nylon fibers. In particular, we report precise measurements over a large range of parameters, and identify the key role played by the drop distribution on the overall collection efficiency. Due to a growth and coalescence process, this drop distribution evolves toward a regular pattern of uniformly distributed drops, and a balance between capillarity and gravity sets an average drop size. Accounting for these effects in a simple inertial impaction model allows predictive and quantitative comparisons with experiments. Drop growth can be suppressed by forming long continuous liquid columns between close fibers; incoming droplets immediately coalesce with these wet columns, and the capture efficiency is increased. In addition, we extend our model to take into account the interactions between fibers.

Authors+Show Affiliations

LadHyX, Department of Mechanics, CNRS, École polytechnique, 91128 Palaiseau, France. camille.duprat@ladhyx.polytechnique.fr.LadHyX, Department of Mechanics, CNRS, École polytechnique, 91128 Palaiseau, France. camille.duprat@ladhyx.polytechnique.fr.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31373596

Citation

Labbé, R, and C Duprat. "Capturing Aerosol Droplets With Fibers." Soft Matter, vol. 15, no. 35, 2019, pp. 6946-6951.
Labbé R, Duprat C. Capturing aerosol droplets with fibers. Soft Matter. 2019;15(35):6946-6951.
Labbé, R., & Duprat, C. (2019). Capturing aerosol droplets with fibers. Soft Matter, 15(35), pp. 6946-6951. doi:10.1039/c9sm01205b.
Labbé R, Duprat C. Capturing Aerosol Droplets With Fibers. Soft Matter. 2019 Sep 21;15(35):6946-6951. PubMed PMID: 31373596.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Capturing aerosol droplets with fibers. AU - Labbé,R, AU - Duprat,C, Y1 - 2019/08/02/ PY - 2019/8/3/pubmed PY - 2019/8/3/medline PY - 2019/8/3/entrez SP - 6946 EP - 6951 JF - Soft matter JO - Soft Matter VL - 15 IS - 35 N2 - Capturing droplets from a stream with a fibrous material is a well-known and well-used process, from coalescence filters to fog harvesting. In this paper, we report experimental measurements of collection efficiency with a model system consisting in an array of vertical nylon fibers. In particular, we report precise measurements over a large range of parameters, and identify the key role played by the drop distribution on the overall collection efficiency. Due to a growth and coalescence process, this drop distribution evolves toward a regular pattern of uniformly distributed drops, and a balance between capillarity and gravity sets an average drop size. Accounting for these effects in a simple inertial impaction model allows predictive and quantitative comparisons with experiments. Drop growth can be suppressed by forming long continuous liquid columns between close fibers; incoming droplets immediately coalesce with these wet columns, and the capture efficiency is increased. In addition, we extend our model to take into account the interactions between fibers. SN - 1744-6848 UR - https://www.unboundmedicine.com/medline/citation/31373596/Capturing_aerosol_droplets_with_fibers L2 - https://doi.org/10.1039/c9sm01205b DB - PRIME DP - Unbound Medicine ER -