{"id":4438,"date":"2017-04-06T05:39:00","date_gmt":"2017-04-06T05:39:00","guid":{"rendered":"http:\/\/thales.mit.edu\/bush\/?p=4438"},"modified":"2021-04-15T01:18:12","modified_gmt":"2021-04-15T01:18:12","slug":"thermally-delayed-drop-coalescence","status":"publish","type":"post","link":"https:\/\/thales.mit.edu\/bush\/index.php\/2017\/04\/06\/thermally-delayed-drop-coalescence\/","title":{"rendered":"Thermally delayed drop coalescence"},"content":{"rendered":"\n<div class=\"wp-block-cover alignwide has-purple-background-color has-background-dim\"><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-image is-style-twentytwentyone-border\"><figure class=\"alignright size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/thales.mit.edu\/bush\/wp-content\/uploads\/2021\/03\/Geri.png\" alt=\"\" class=\"wp-image-4436\" width=\"500\" height=\"446\"\/><figcaption>The Marangoni flows generated in the air layer beneath a cold drop resist its coalescence with a warm bath.<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"tw-text-wide\">We present the results of a combined experimental and theoretical study of drop coalescence in the presence of an initial temperature difference between a drop and a bath of the same liquid. We characterize experimentally the dependence of the residence time before coalescence on the temperature difference for silicone oils with different viscosities.  The observed dependence is rationalized theoretically through consideration of the thermocapillary flows generated within the drop, the bath and the intervening air layer.<\/p>\n\n\n\n<p class=\"tw-text-wide\">See paper:  <a data-type=\"URL\" data-id=\"http:\/\/thales.mit.edu\/bush\/wp-content\/uploads\/2021\/03\/Geri-2017.pdf\" href=\"http:\/\/thales.mit.edu\/bush\/wp-content\/uploads\/2021\/03\/Geri-2017.pdf\">Geri, M., Keshavarz, B., McKinley, G.H. and Bush, J.W.M.  (2017)  <\/a><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"--col-width:25%;flex-basis:25%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"--col-width:50%;flex-basis:50%\">\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"How to levitate a droplet on a liquid surface\" width=\"1000\" height=\"750\" src=\"https:\/\/www.youtube.com\/embed\/nXivZw-c7Vk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"--col-width:25%;flex-basis:25%\"><\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":5,"featured_media":4436,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-4438","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-interfacial-flows","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Thermally delayed drop coalescence - John W. M. Bush<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thales.mit.edu\/bush\/index.php\/2017\/04\/06\/thermally-delayed-drop-coalescence\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Thermally delayed drop coalescence - John W. M. Bush\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thales.mit.edu\/bush\/index.php\/2017\/04\/06\/thermally-delayed-drop-coalescence\/\" \/>\n<meta property=\"og:site_name\" content=\"John W. M. 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