{"id":18413,"date":"2015-11-30T11:07:53","date_gmt":"2015-11-30T11:07:53","guid":{"rendered":"https:\/\/www.editage.com\/insights\/research\/researchers-explain-how-a-droplet-moves-on-a-solid-surface\/"},"modified":"2025-09-22T10:36:57","modified_gmt":"2025-09-22T05:06:57","slug":"researchers-explain-how-a-droplet-moves-on-a-solid-surface","status":"publish","type":"research","link":"https:\/\/www.editage.com\/insights\/researchers-explain-how-a-droplet-moves-on-a-solid-surface","title":{"rendered":"Researchers explain how a droplet moves on a solid surface"},"content":{"rendered":"

What is exactly happening when a raindrop slides down a glass window? Whenever a fluid comes in contact with a solid, a \u2018contact line\u2019 is formed. How the liquid droplets spread out on a solid surface has been difficult for scientists to explain in physical and mathematical models. According to the classic hydrodynamic model, the \u2018boundary condition\u2019 or what can be explained as lack of relative motion at the fluid-solid interface prevents fluids from slipping on a surface. However, this \u2018no-slip\u2019 condition leads to \u2018unphysical\u2019 behavior at the contact line. Therefore, Weiqing Ren of A*STAR’s Institute of High Performance Computing and his colleagues combined mathematical and computational methods to come up with a ‘first-principle’ hydrodynamic model that explains how a fluid droplet moves on a solid surface. They included continuum theory, molecular dynamics and multiscale techniques in their model along with two sets of boundary conditions: \u201cone for the macroscopic regime where the droplet’s motion can be safely described using the no-slip condition, and another for the microscopic regime around the contact line where slip plays an important role.\u201d Their model explains common phenomenon such as how a detergent is able to remove an oil drop from a solid surface. Moreover, \u201cThis model helps us to examine many important physical phenomena using analytic and computational tools,” Ren said.<\/span><\/p>\n

Read more in Science Daily<\/a><\/em>. \u00a0<\/span><\/p>\n","protected":false},"author":8,"featured_media":33313,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"new_tags":[],"series":[],"subject":[5741,5739,5740],"class_list":["post-18413","research","type-research","status-publish","has-post-thumbnail","hentry","subject-and-statistics","subject-computer-science","subject-mathematics"],"acf":[],"yoast_head":"\nResearchers explain how a droplet moves on a solid surface | Editage Insights<\/title>\n<meta name=\"description\" content=\"What is exactly happening when a raindrop slides down a glass window? Whenever a fluid comes in contact with a solid, a \u2018contact line\u2019 is formed. How the liquid droplets spread out on a solid surface has been difficult for scientists to explain in physical and mathematical models. Weiqing Ren of A*STAR's Institute of High Performance Computing and his colleagues combined mathematical and computational methods to come up with a 'first-principle' hydrodynamic model that explains how a fluid droplet moves on a solid surface. Read more about their research here.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.editage.com\/insights\/researchers-explain-how-a-droplet-moves-on-a-solid-surface\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Researchers explain how a droplet moves on a solid surface | Editage Insights\" \/>\n<meta property=\"og:description\" content=\"What is exactly happening when a raindrop slides down a glass window? Whenever a fluid comes in contact with a solid, a \u2018contact line\u2019 is formed. How the liquid droplets spread out on a solid surface has been difficult for scientists to explain in physical and mathematical models. Weiqing Ren of A*STAR's Institute of High Performance Computing and his colleagues combined mathematical and computational methods to come up with a 'first-principle' hydrodynamic model that explains how a fluid droplet moves on a solid surface. 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