{"id":250221,"date":"2025-03-09T18:29:36","date_gmt":"2025-03-09T18:29:36","guid":{"rendered":"https:\/\/mecheng.iisc.ac.in\/fpl\/?p=250221"},"modified":"2025-03-09T18:33:54","modified_gmt":"2025-03-09T18:33:54","slug":"fluid-structure-interaction","status":"publish","type":"post","link":"https:\/\/mecheng.iisc.ac.in\/fpl\/fluid-structure-interaction\/","title":{"rendered":"Fluid Structure Interaction"},"content":{"rendered":"<div class=\"foogallery foogallery-container foogallery-carousel foogallery-lightbox-none fg-carousel-hide-nav-arrows fg-carousel-hide-progress-bar fg-carousel fg-light fg-border-thin fg-round-large fg-shadow-medium fg-loading-default fg-loaded-fade-in fg-caption-always fg-hover-fade fg-transparent-overlays fg-ready\" id=\"foogallery-gallery-250234\" data-foogallery=\"{&quot;item&quot;:{&quot;showCaptionTitle&quot;:false,&quot;showCaptionDescription&quot;:true},&quot;lazy&quot;:true,&quot;template&quot;:{&quot;maxItems&quot;:1,&quot;scale&quot;:0.12,&quot;gutter&quot;:{&quot;min&quot;:-40,&quot;max&quot;:-20,&quot;unit&quot;:&quot;%&quot;},&quot;autoplay&quot;:{&quot;time&quot;:5,&quot;interaction&quot;:&quot;pause&quot;},&quot;centerOnClick&quot;:true}}\" >\n\t<button type=\"button\" class=\"fg-carousel-prev\"><\/button>\n\t<div class=\"fg-carousel-inner\">\n\t\t<div class=\"fg-carousel-center\"><\/div>\n\t\t<div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a data-caption-desc=\"Flapping flexible foil: Towards efficient thrust production for fish-like locomotion\" data-attachment-id=\"250231\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"667\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-content\/uploads\/cache\/2025\/03\/Fluid-Structure-Interaction-1-1\/2799490112.png\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%221000%22%20height%3D%22667%22%20viewBox%3D%220%200%201000%20667%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-desc\">Flapping flexible foil: Towards efficient thrust production for fish-like locomotion<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div><div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a data-caption-desc=\"Flapping foil wake dynamics: Variations with Strouhal number at low Re from vortex method based simulations\" data-attachment-id=\"250224\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img decoding=\"async\" width=\"1000\" height=\"667\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-content\/uploads\/cache\/2025\/03\/Fluid-Structure-Interaction-2\/2352725680.png\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%221000%22%20height%3D%22667%22%20viewBox%3D%220%200%201000%20667%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-desc\">Flapping foil wake dynamics: Variations with Strouhal number at low Re from vortex method based simulations<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div><div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a data-caption-desc=\"Single stroke of the turning manoeuvre in fish: What is the spatial origin of the fluid material that get trapped within each of the two vortices?\" data-attachment-id=\"250222\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img decoding=\"async\" width=\"1000\" height=\"667\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-content\/uploads\/cache\/2025\/03\/Fluid-Structure-Interaction-3\/1701414911.png\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%221000%22%20height%3D%22667%22%20viewBox%3D%220%200%201000%20667%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-desc\">Single stroke of the turning manoeuvre in fish: What is the spatial origin of the fluid material that get trapped within each of the two vortices?<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div><div class=\"fg-item fg-type-image fg-idle\"><figure class=\"fg-item-inner\"><a data-caption-desc=\"Vortical structures generated from a flexible \u201cexit\u201d: Propulsive action of jelly-fish, and heart valves that are composed of flexible membranes\" data-attachment-id=\"250223\" data-type=\"image\" class=\"fg-thumb\"><span class=\"fg-image-wrap\"><img decoding=\"async\" width=\"1000\" height=\"667\" class=\"skip-lazy fg-image\" data-src-fg=\"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-content\/uploads\/cache\/2025\/03\/Fluid-Structure-Interaction-4\/2353006177.png\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%221000%22%20height%3D%22667%22%20viewBox%3D%220%200%201000%20667%22%3E%3C%2Fsvg%3E\" loading=\"eager\"><\/span><span class=\"fg-image-overlay\"><\/span><\/a><figcaption class=\"fg-caption\"><div class=\"fg-caption-inner\"><div class=\"fg-caption-desc\">Vortical structures generated from a flexible \u201cexit\u201d: Propulsive action of jelly-fish, and heart valves that are composed of flexible membranes<\/div><\/div><\/figcaption><\/figure><div class=\"fg-loader\"><\/div><\/div>\t<\/div>\n\t<div class=\"fg-carousel-bottom\"><\/div>\n\t<div class=\"fg-carousel-progress\"><\/div>\n\t<button type=\"button\" class=\"fg-carousel-next\"><\/button>\n<\/div><style type=\"text\/css\">.fg-caption-desc{\r\ncolor: #1a1a1a;\r\ntext-align:center;\r\npadding-bottom: 40px;\r\n}<\/style>\n\n\n<p><\/p>\n\n\n\n<p>Several problems of engineering interest have strong interactions between the fluid flow around surfaces\/bodies, and the motions\/deformations of the solid surfaces\/bodies. Examples of such problems range from compressor blade flutter of aircraft engines to the gentle flapping of leaves in the wind. In these problems, the strong interactions between the fluid and the solid surfaces can result in rich and interesting dynamics both within the fluid and in the deformations or motions of the solid surfaces. We are exploring a range of such Fluid-Structure Interaction problems in the lab. These include the flapping of flexible foils for the generation of efficient thrust in \u201crobotic fishes\u201d, the unsteady shock induced flutter of compressor blades, stall flutter of single blades or airfoils and the flow through flexible valves. One of the focus areas in FSI within the lab has been on studying the effects of surface flexibility in a few flow configurations motivated by biological systems, whose surfaces (tissues\/membranes) are inherently flexible. <\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>In this connection, we have studied<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>the effects of vortex-pair\/vortex-ring generation from a flexible exit, motivated by the propulsive action of some aquatic creatures such as the jelly-fish, and heart valves that are composed of flexible membranes.<\/li>\n\n\n\n<li>the forces and wake of an oscillating flexible airfoil motivated by the undulating motions of a \u201cflexible\u201d fish tail to generates propulsive thrust.<\/li>\n\n\n\n<li>the effect of a flexible splitter plate in the wake of cylinder for reducing drag and to suppress noise and vibrations.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Several problems of engineering interest have strong interactions between the fluid flow around surfaces\/bodies, and the motions\/deformations of the solid surfaces\/bodies. Examples of such problems range from compressor blade flutter of aircraft engines to the gentle flapping of leaves in the wind. In these problems, the strong interactions between the fluid and the solid surfaces [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-250221","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/posts\/250221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/comments?post=250221"}],"version-history":[{"count":4,"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/posts\/250221\/revisions"}],"predecessor-version":[{"id":250239,"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/posts\/250221\/revisions\/250239"}],"wp:attachment":[{"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/media?parent=250221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/categories?post=250221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mecheng.iisc.ac.in\/fpl\/wp-json\/wp\/v2\/tags?post=250221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}