{"id":1007,"date":"2026-09-29T13:21:54","date_gmt":"2026-09-29T13:21:54","guid":{"rendered":"https:\/\/blog.metu.edu.tr\/ukarban\/?p=1007"},"modified":"2026-09-29T13:21:54","modified_gmt":"2026-09-29T13:21:54","slug":"publications","status":"publish","type":"page","link":"https:\/\/blog.metu.edu.tr\/ukarban\/publications\/","title":{"rendered":"Selected Publications"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Four papers that show complementary parts of the lab&#8217;s research: mean-flow-based linear analysis, wall turbulence, jet aeroacoustics and data-driven analysis of experimental flow data.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ambiguity in mean-flow-based linear analysis<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Journal of Fluid Mechanics<\/em> 900, R5 (2020)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/blog.metu.edu.tr\/ukarban\/files\/2026\/09\/graphicalAbstract_ambiguity-scaled.jpg\" alt=\"Graphical abstract: Ambiguity in mean-flow-based linear analysis\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This paper shows that linearising equivalent forms of the Navier\u2013Stokes equations can produce different mean-flow-based linear operators. In turbulent jets, primitive- and conservative-variable formulations yield different resolvent gains and modes, with the differences increasing as variable-density effects become stronger.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/doi.org\/10.1017\/jfm.2020.566\">doi.org\/10.1017\/jfm.2020.566<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Self-similar mechanisms in wall turbulence studied using resolvent analysis<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Journal of Fluid Mechanics<\/em> 939, A36 (2022)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/blog.metu.edu.tr\/ukarban\/files\/2026\/09\/graphicalAbstract_selfsimilar-scaled.jpg\" alt=\"Graphical abstract: Self-similar mechanisms in wall turbulence studied using resolvent analysis\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Using direct numerical simulation and resolvent-based analysis, this study examines wall-attached coherent structures and their associated forcing in turbulent channel flow. It finds self-similarity in both the structures and selected components of the forcing, in line with the attached-eddy picture.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/doi.org\/10.1017\/jfm.2022.225\">doi.org\/10.1017\/jfm.2022.225<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">An empirical model of noise sources in subsonic jets<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Journal of Fluid Mechanics<\/em> 965, A18 (2023)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/blog.metu.edu.tr\/ukarban\/files\/2026\/09\/graphical_abstract_jetnoisemodelling.jpg\" alt=\"Graphical abstract: An empirical model of noise sources in subsonic jets\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This work identifies acoustically efficient forcing in a subsonic jet from large-eddy simulation data and uses it to inform a predictive model. The radiating component contains less than 0.05% of the total forcing energy yet generates most of the acoustic response; the model predicts noise within 2 dB over a range of frequencies, downstream angles and flight conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/doi.org\/10.1017\/jfm.2023.376\">doi.org\/10.1017\/jfm.2023.376<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Dynamic mode decomposition using standard particle image velocimetry data<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Physical Review Fluids<\/em> (accepted September 2026)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/blog.metu.edu.tr\/ukarban\/files\/2026\/09\/graphicalAbstract_dmd.png\" alt=\"Visual summary: Dynamic mode decomposition using standard particle image velocimetry data\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This paper introduces gap-based dynamic mode decomposition (gDMD) to extract flow dynamics from standard, non-time-resolved PIV data, where the time between successive image pairs is too large for conventional DMD.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/doi.org\/10.1103\/4g2g-7mh7\">doi.org\/10.1103\/4g2g-7mh7<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Four papers that show complementary parts of the lab&#8217;s research: mean-flow-based linear analysis, wall turbulence, jet aeroacoustics and data-driven analysis of experimental flow data. Ambiguity in mean-flow-based linear analysis Journal of Fluid Mechanics 900, R5 (2020) This paper shows that linearising equivalent forms of the Navier\u2013Stokes equations can produce different mean-flow-based linear operators. In turbulent [&hellip;]<\/p>\n","protected":false},"author":9633,"featured_media":0,"parent":0,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-1007","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/pages\/1007","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=1007"}],"version-history":[{"count":0,"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/pages\/1007\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/media?parent=1007"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}