{"id":191918,"date":"2024-06-27T02:26:14","date_gmt":"2024-06-27T07:26:14","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2024\/06\/observing-flows-at-a-liquid-liquid-solid-intersection"},"modified":"2024-06-27T02:26:14","modified_gmt":"2024-06-27T07:26:14","slug":"observing-flows-at-a-liquid-liquid-solid-intersection","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2024\/06\/observing-flows-at-a-liquid-liquid-solid-intersection","title":{"rendered":"Observing flows at a liquid-liquid-solid intersection"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/observing-flows-at-a-liquid-liquid-solid-intersection3.jpg\"><\/a><\/p>\n<p>Most of us are familiar with the classic example of a liquid-gas moving contact line on a solid surface: a raindrop, sheared by the wind, creeps along a glass windscreen. The contact line\u2019s movements depend on the interplay between viscous and surface tension forces\u2014a relationship that has been thoroughly investigated in experimental fluid mechanics.<\/p>\n<p>In a study <a href=\"https:\/\/link.springer.com\/10.1140\/epjs\/s11734-024-01170-x\" target=\"_blank\">published<\/a> in <i>The European Physical Journal Special Topics<\/i>, Harish Dixit, of the Indian Institute of Technology Hyderabad, and his colleagues now examine the movements of a contact line formed at the interface between two immiscible liquids and a solid. The experiments fill a gap in <a href=\"https:\/\/phys.org\/tags\/fluid+dynamics\/\" rel=\"tag\" class=\"\">fluid dynamics<\/a> and suggest a mechanism for an imposed boundary condition that eludes mathematical description.<\/p>\n<p>According to theory, the movement of a liquid-liquid contact line should be governed entirely by the liquids\u2019 viscosity ratio and the angle at which the liquid interface meets the solid. To examine this in a real-world system, Dixit and his colleagues filled a rectangular tank with two liquid layers\u2014silicone oil atop sugar water\u2014with similar densities but significantly different viscosities. The researchers placed a glass slide at the edge of the tank, which they could slide vertically to create a moving contact line.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Most of us are familiar with the classic example of a liquid-gas moving contact line on a solid surface: a raindrop, sheared by the wind, creeps along a glass windscreen. The contact line\u2019s movements depend on the interplay between viscous and surface tension forces\u2014a relationship that has been thoroughly investigated in experimental fluid mechanics. In [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2229],"tags":[],"class_list":["post-191918","post","type-post","status-publish","format-standard","hentry","category-mathematics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/191918","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=191918"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/191918\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=191918"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=191918"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=191918"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}