{"id":1023,"date":"2026-09-29T18:00:00","date_gmt":"2026-09-29T15:00:00","guid":{"rendered":"https:\/\/blog.metu.edu.tr\/ukarban\/?p=1004"},"modified":"2026-09-29T18:00:00","modified_gmt":"2026-09-29T15:00:00","slug":"flow-dynamics-non-time-resolved-measurements-2","status":"publish","type":"post","link":"https:\/\/blog.metu.edu.tr\/ukarban\/2026\/09\/29\/flow-dynamics-non-time-resolved-measurements-2\/","title":{"rendered":"Recovering flow dynamics from non-time-resolved measurements"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Standard particle image velocimetry (PIV) systems record image pairs separated by a short interval, but successive pairs are often far apart in time. The resulting data are not time-resolved, which makes it difficult to extract temporal dynamics with conventional modal-analysis methods such as dynamic mode decomposition (DMD).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gap-based dynamic mode decomposition (gDMD) addresses this by extracting DMD modes from standard, non-time-resolved PIV data. The approach is described in a paper accepted in <em>Physical Review Fluids<\/em> (September 2026): <a href=\"https:\/\/doi.org\/10.1103\/4g2g-7mh7\">doi.org\/10.1103\/4g2g-7mh7<\/a>.<\/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 PIV data\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Standard particle image velocimetry (PIV) systems record image pairs separated by a short interval, but successive pairs are often far apart in time. The resulting data are not time-resolved, which makes it difficult to extract temporal dynamics with conventional modal-analysis methods such as dynamic mode decomposition (DMD). Gap-based dynamic mode decomposition (gDMD) addresses this by [&hellip;]<\/p>\n","protected":false},"author":9633,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[1],"tags":[],"class_list":["post-1023","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/posts\/1023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/types\/post"}],"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=1023"}],"version-history":[{"count":0,"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/posts\/1023\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/media?parent=1023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/categories?post=1023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/ukarban\/wp-json\/wp\/v2\/tags?post=1023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}