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. 2020 Aug 25;11:4244. doi: 10.1038/s41467-020-18000-y

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Here simulations are performed for particles of diameter 12 μm moving in a channel of height 38 μm. a Velocity field in two orthogonal planes intersecting the particle. b Pressure field in the central plane parallel to the walls. c Convergence of the force depending on the grid refinement level.