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The collective dynamics and its impact on the flow are poorly understood. Here, using droplets as a prototype, we show that collective transport can occur for conditions under which a single particle would get trapped at a pore channel. When a series of droplets gets trapped, the fluid flow is affected significantly, leading to an increase of the pressure difference across the pore channels, which, in turn, squeezes the particles through the channels. We analyze the conditions for a single droplet to flow through one pore and derive the corresponding Bond number. We also obtain a rule for the collective flow of droplets in porous media.<\/jats:p>","DOI":"10.1063\/5.0129477","type":"journal-article","created":{"date-parts":[[2022,12,10]],"date-time":"2022-12-10T20:35:35Z","timestamp":1670704535000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":12,"title":["Collective transport of droplets through porous media"],"prefix":"10.1063","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8904-0778","authenticated-orcid":false,"given":"Rodrigo C. V.","family":"Coelho","sequence":"first","affiliation":[{"name":"Centro de F\u00edsica Te\u00f3rica e Computacional, Faculdade de Ci\u00eancias, Universidade de Lisboa 1 , P-1749-016 Lisboa, Portugal"},{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias, Universidade de Lisboa 2 , P-1749-016 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7383-1073","authenticated-orcid":false,"given":"Danilo P. F.","family":"Silva","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica Te\u00f3rica e Computacional, Faculdade de Ci\u00eancias, Universidade de Lisboa 1 , P-1749-016 Lisboa, Portugal"},{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias, Universidade de Lisboa 2 , P-1749-016 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2202-8779","authenticated-orcid":false,"given":"Ant\u00f3nio M. R.","family":"Maschio","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica Te\u00f3rica e Computacional, Faculdade de Ci\u00eancias, Universidade de Lisboa 1 , P-1749-016 Lisboa, Portugal"},{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias, Universidade de Lisboa 2 , P-1749-016 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8849-9990","authenticated-orcid":false,"given":"Margarida M.","family":"Telo da Gama","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica Te\u00f3rica e Computacional, Faculdade de Ci\u00eancias, Universidade de Lisboa 1 , P-1749-016 Lisboa, Portugal"},{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias, Universidade de Lisboa 2 , P-1749-016 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1677-6060","authenticated-orcid":false,"given":"Nuno A. 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