{"id":691005,"date":"2025-09-20T05:00:49","date_gmt":"2025-09-20T02:00:49","guid":{"rendered":"https:\/\/buradabiliyorum.com\/en\/clever-device-drastically-reduces-the-vibration-from-rotating-parts\/"},"modified":"2025-09-20T05:00:49","modified_gmt":"2025-09-20T02:00:49","slug":"clever-device-drastically-reduces-the-vibration-from-rotating-parts","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/clever-device-drastically-reduces-the-vibration-from-rotating-parts\/","title":{"rendered":"Clever device drastically reduces the vibration from rotating parts"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a3c8820e466c\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a3c8820e466c\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/clever-device-drastically-reduces-the-vibration-from-rotating-parts\/#Powerful_Karman_vortices\" >Powerful K\u00e1rm\u00e1n vortices<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/clever-device-drastically-reduces-the-vibration-from-rotating-parts\/#Lightweight_sturdy_infill_structure\" >Lightweight, sturdy infill structure<\/a><\/li><\/ul><\/nav><\/div>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/device-drastically-red.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/device-drastically-red.jpg\" data-sub-html=\"Credit: Ecole Polytechnique Federale de Lausanne\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2025\/device-drastically-red.jpg\" alt=\"Device drastically reduces the vibration from rotating parts\" title=\"Credit: Ecole Polytechnique Federale de Lausanne\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Credit: Ecole Polytechnique Federale de Lausanne<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>An EPFL Ph.D. student in mechanical engineering has developed a device that significantly dampens the flow-induced vibration caused by rotating parts, such as those in boat propellers, turbines and hydraulic pumps. His device can be produced with a 3D printer and has recently been patented.<\/p>\n<p>It&#8217;s a classic case of beginner&#8217;s luck. Thomas Berger had just started his Ph.D. in mechanical engineering at EPFL&#8217;s School of Engineering when he made his now-patented discovery, which is <a rel=\"nofollow\" target=\"_blank\" href=\"https:\/\/www.nature.com\/articles\/s41598-025-11199-0\" target=\"_blank\">published in <i>Scientific Reports<\/i><\/a>.<\/p>\n<p>His thesis built on work he had started as a master&#8217;s student, but with the help of a 3D printer. This led to the promising <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">technology<\/a> that&#8217;s now attracting interest from investors.<\/p>\n<p>Berger conducted his research at the laboratory headed by Mohamed Farhat, which studies complex fluid dynamics for <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>lications including sailboats and hydropower turbines. &#8220;Turbines create particular challenges from both a scientific and engineering perspective,&#8221; says Farhat, who also supervised Berger&#8217;s thesis.<\/p>\n<p>&#8220;We&#8217;re aiming to address those challenges by running experiments on our large equipment. The biggest challenge relates to flow-induced vibration, which is a major problem for turbine designers as well as operators.&#8221;<\/p>\n<p>The key to Berger&#8217;s system is to eliminate the vortices that cause much of the vibration.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Powerful_Karman_vortices\"><\/span>Powerful K\u00e1rm\u00e1n vortices<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vortices form when a fluid such as air or water flows over an obstacle. They&#8217;re created by such things as airplane wings, the ferries crisscrossing Lake Geneva and the Burj Khalifa skyscraper in Dubai. Once the fluid starts to flow over the obstacle at a certain velocity, alternating vortices are created in the obstacle&#8217;s wake that exert oscillating pressure on its surface, resulting in vibration.<\/p>\n<p>These vortices can be very strong and damage turbines or even bridges, as occurred with the Tacoma Narrows Bridge in the US in 1940. They were first identified by engineer Theodore von K\u00e1rm\u00e1n in 1911 and are now known as K\u00e1rm\u00e1n vortices.<\/p>\n<p>When Gustave Eiffel built his 330-meter-high tower in Paris in 1887, K\u00e1rm\u00e1n vortices hadn&#8217;t yet been discovered. &#8220;The tower&#8217;s porous structure is undoubtedly what saved it,&#8221; says Farhat. &#8220;That structure mitigated the formation of strong vortices. It was a real stroke of luck!&#8221; In fact, it was this porosity that gave Berger the idea for his research.<\/p>\n<p>Engineers have already devised various solutions for attenuating K\u00e1rm\u00e1n vortices, such as by tapering the trailing edges of turbine blades where the vortices form. These solutions have proven to be effective to varying degrees but don&#8217;t entirely do away with the problem.<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/device-drastically-red-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/device-drastically-red-1.jpg\" data-sub-html=\"A gyroid\u2014a 3D structure made up of continuous curved surfaces. Credit: EPFL\/Alain Herzog\u2014CC-BY-SA 4.0\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2025\/device-drastically-red-1.jpg\" alt=\"Device drastically reduces the vibration from rotating parts\" title=\"A gyroid\u2014a 3D structure made up of continuous curved surfaces. Credit: EPFL\/Alain Herzog\u2014CC-BY-SA 4.0\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                A gyroid\u2014a 3D structure made up of continuous curved surfaces. Credit: EPFL\/Alain Herzog\u2014CC-BY-SA 4.0<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>                                                                                                        <!-- TechX - News - In-article --><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Lightweight_sturdy_infill_structure\"><\/span>Lightweight, sturdy infill structure<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8220;For now, theory alone won&#8217;t let us predict the magnitude of the vibration that will be caused by a given configuration,&#8221; says Berger.<\/p>\n<p>That&#8217;s why he decided to use an experimental approach to find the optimal design for his vortex-reducing device. Drawing on his expertise in 3D printing, he produced and tested many different forms and materials, spending long hours in the process. He eventually found a geometrical shape that worked particularly well.<\/p>\n<p>&#8220;It&#8217;s a fascinating shape derived from mathematics but that also has very useful mechanical properties,&#8221; says Berger. The shape is known as a gyroid\u2014a 3D structure made up of continuous curved surfaces that&#8217;s not only porous and tortuous but also lightweight and sturdy.<\/p>\n<p>To test the gyroid, he glued the plastic-resin one he had 3D-printed onto the trailing edge of a steel blade and ran experiments in a small-scale tunnel. The result was zero vortex formation\u2014and therefore no vortex-induced vibration.<\/p>\n<p>&#8220;This particular shape nips vortex formation in the bud!&#8221; says Farhat. &#8220;And it doesn&#8217;t alter the blade&#8217;s performance.&#8221; Berger made his discovery by combining mathematics with coding and 3D computer modeling.<\/p>\n<p>Yet a big question remains: how does a gyroid prevent vortices from forming? &#8220;I conducted my thesis a little backwards\u2014I started by finding the solution and now I&#8217;m working to find the scientific reason why it works,&#8221; says Berger.<\/p>\n<p>Today, investors are taking an interest in his promising technology. The next step will be to test the gyroid under more complicated conditions, such as those inside turbines.<\/p>\n<div class=\"article-main__more p-4\">\n<p><strong>More information:<\/strong><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tThomas Berger et al, Gyroid as a novel approach to suppress vortex shedding and mitigate induced vibration, <i>Scientific Reports<\/i> (2025). <a rel=\"nofollow\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1038\/s41598-025-11199-0\" target=\"_blank\">DOI: 10.1038\/s41598-025-11199-0<\/a><\/p>\n<\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    Ecole Polytechnique Federale de Lausanne<br \/>\n                                                    \t\t\t\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.epfl.ch\/\" target=\"_blank\" rel=\"nofollow\"><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<use href=\"https:\/\/techx.b-cdn.net\/tmpl\/v2\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>\n                                                <strong>Citation<\/strong>:<br \/>\n                                                Clever device drastically reduces the vibration from rotating parts (2025, September 19)<br \/>\n                                                retrieved 19 September 2025<br \/>\n                                                from https:\/\/techxplore.com\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2025-09-clever-device-drastically-vibration-rotating.html\n                                            <\/p>\n<p>\n                                            This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n                                            part may be reproduced without the written permission. The content is provided for information purposes only.\n                                            <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMN63nwsw68G3Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" target=\"_blank\" >Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/techxplore.com\/news\/2025-09-clever-device-drastically-vibration-rotating.html\" target=\"_blank\" >Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Credit: Ecole Polytechnique Federale de Lausanne An EPFL Ph.D. student in mechanical engineering has developed a device that significantly dampens the flow-induced vibration caused by rotating parts, such as those in boat propellers, turbines and hydraulic pumps. His device can be produced with a 3D printer and has recently been patented. It&#8217;s a classic case&#8230;<\/p>\n","protected":false},"author":1,"featured_media":691006,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/device-drastically-red.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-691005","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/691005","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=691005"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/691005\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/691006"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=691005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=691005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=691005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}