{"id":1000,"date":"2026-09-29T13:21:53","date_gmt":"2026-09-29T13:21:53","guid":{"rendered":"https:\/\/blog.metu.edu.tr\/ukarban\/?p=1000"},"modified":"2026-09-29T13:21:53","modified_gmt":"2026-09-29T13:21:53","slug":"home","status":"publish","type":"page","link":"https:\/\/blog.metu.edu.tr\/ukarban\/","title":{"rendered":"Turbulence &amp; Aeroacoustics Lab"},"content":{"rendered":"\n<p class=\"has-large-font-size wp-block-paragraph\">Mechanisms, models and data-driven analysis of turbulent flows and flow-generated sound.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Turbulence &amp; Aeroacoustics Lab in the Department of Aerospace Engineering at Middle East Technical University (METU) studies how coherent structures organise turbulent flows and the sound they generate. We combine physical modelling, reduced-order analysis and data-driven methods to identify these mechanisms in measurements and simulations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Research directions<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Turbulence and aeroacoustics:<\/strong> the flow structures and instability mechanisms associated with noise generation.<\/li>\n\n\n<li><strong>Linear and resolvent-based analysis:<\/strong> mean-flow-based models of coherent structures in jets and wall turbulence.<\/li>\n\n\n<li><strong>Data-driven flow analysis:<\/strong> modal decomposition and reduced-order models extracted from experimental and numerical data.<\/li>\n\n\n<li><strong>Dynamical systems and learned models:<\/strong> delay-coordinate system identification and machine-learning corrections for simulations.<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">More on the <a href=\"https:\/\/blog.metu.edu.tr\/ukarban\/research\/\">Research<\/a> page.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Selected publications<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/doi.org\/10.1017\/jfm.2020.566\">Ambiguity in mean-flow-based linear analysis<\/a>. <em>Journal of Fluid Mechanics<\/em> 900, R5 (2020).<\/li>\n\n\n<li><a href=\"https:\/\/doi.org\/10.1017\/jfm.2022.225\">Self-similar mechanisms in wall turbulence studied using resolvent analysis<\/a>. <em>Journal of Fluid Mechanics<\/em> 939, A36 (2022).<\/li>\n\n\n<li><a href=\"https:\/\/doi.org\/10.1017\/jfm.2023.376\">An empirical model of noise sources in subsonic jets<\/a>. <em>Journal of Fluid Mechanics<\/em> 965, A18 (2023).<\/li>\n\n\n<li><a href=\"https:\/\/doi.org\/10.1103\/4g2g-7mh7\">Dynamic mode decomposition using standard particle image velocimetry data<\/a>. <em>Physical Review Fluids<\/em>, accepted September 2026.<\/li>\n\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Summaries and graphical abstracts: <a href=\"https:\/\/blog.metu.edu.tr\/ukarban\/publications\/\">Selected Publications<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Current projects<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The lab currently hosts one PhD and three MSc thesis projects, on Wiener\u2013Hopf methods for acoustic scattering, delay-coordinate system identification, fault detection and learned corrections for coarse-grid RANS simulations. See <a href=\"https:\/\/blog.metu.edu.tr\/ukarban\/projects\/\">Projects<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Principal investigator<\/h2>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:24%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/blog.metu.edu.tr\/ukarban\/files\/2026\/09\/ugur_karban_square.jpg\" alt=\"Ugur Karban\" \/><\/figure>\n\n\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:76%\">\n<p class=\"wp-block-paragraph\"><strong>Ugur Karban<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ugur Karban is a faculty member in Aerospace Engineering at Middle East Technical University (METU). His research examines instability, coherent structures and their role in turbulent flows and aeroacoustic sound generation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Profile and group members: <a href=\"https:\/\/blog.metu.edu.tr\/ukarban\/people\/\">People<\/a>.<\/p>\n\n\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Mechanisms, models and data-driven analysis of turbulent flows and flow-generated sound. The Turbulence &amp; Aeroacoustics Lab in the Department of Aerospace Engineering at Middle East Technical University (METU) studies how coherent structures organise turbulent flows and the sound they generate. We combine physical modelling, reduced-order analysis and data-driven methods to identify these mechanisms in measurements [&hellip;]<\/p>\n","protected":false},"author":9633,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-1000","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/pages\/1000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/users\/9633"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/comments?post=1000"}],"version-history":[{"count":0,"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/pages\/1000\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/media?parent=1000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}