{"689866":{"#nid":"689866","#data":{"type":"event","title":"PhD Defense by Mateo Reynoso","body":[{"value":"\u003Cp\u003En partial fulfillment of the requirements for the degree of\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EDoctor of Philosophy in Physics\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ESchool of Physics Thesis\u0026nbsp;Dissertation\u0026nbsp;Defense\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EMateo Reynoso\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr. Roman Grigoriev, School of Physics, Georgia Institute of Technology (Advisor)\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EDynamical Mechanisms of Nonuniversality in 2D Turbulence in the Presence of Coherent Structures\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDate: Tuesday,\u0026nbsp;April 21, 2026\u003C\/p\u003E\u003Cp\u003ETime: 1:00 p.m.\u003C\/p\u003E\u003Cp\u003ELocation: Howey Physics Building, Room N110\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EVirtual: \u003Ca href=\u0022https:\/\/nam12.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fgatech.zoom.us%2Fj%2F98641369716\u0026amp;data=05%7C02%7Ctm186%40gtvault.onmicrosoft.com%7C93f02e32cbac411abfa008de9bc9be40%7C482198bbae7b4b258b7a6d7f32faa083%7C1%7C0%7C639119487950078525%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C\u0026amp;sdata=3RgzWKYDmYOQyxKZ11m%2BObQFNe25qtUH3%2BslSpPGN5U%3D\u0026amp;reserved=0\u0022 rel=\u0022noopener noreferrer\u0022 target=\u0022_blank\u0022 title=\u0022Original URL: https:\/\/gatech.zoom.us\/j\/98641369716. Click or tap if you trust this link.\u0022\u003Ehttps:\/\/gatech.zoom.us\/j\/98641369716\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee members\u003C\/strong\u003E:\u003C\/p\u003E\u003Cp\u003EDr. Predrag Cvitanovi\u0107, School of Physics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;Michael Schatz, School of Physics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;Alexander Blumenthal, School of Mathematics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003EDr. Rafael de La Llave, School of Mathematics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E:\u003C\/p\u003E\u003Cp\u003ETurbulence is one of the most important problems in physics and applied mathematics, with applications ranging from astrophysics and engineering to plumbing\u0026nbsp;and more. It is fundamentally a multiscale phenomenon, characterized by cascades that dynamically transfer energy and other invariants across a wide range of length scales. While these interactions are often described through a statistical framework, a more holistic understanding requires accounting for the spatial structure of the flow. Aspects such as the coherence of large-scale structures cannot be captured by statistical assumptions alone; therefore, a more general theory for scaling in turbulence must explicitly account for the dynamical role of coherent structures.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThis dissertation examines how coherent structures shape scale generation and nonuniversality in two-dimensional turbulence, with an emphasis on both the direct enstrophy cascade in steady turbulence and the inverse energy transferr\u0026nbsp;in freely decaying turbulence. Although classical Kraichnan\u2013Leith\u2013Batchelor theory predicts universal scaling under assumptions of homogeneity, isotropy, and locality, the results presented here show that the observed scaling is instead governed by the geometry and interactions of coherent structures, often organized as large-scale flows. By combining direct numerical simulations, reduced-order modeling, and statistical closure arguments, this work demonstrates that a predictive theory of turbulence scaling must move beyond statistical assumptions and account for the transport and lifecycle of coherent structures.\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EDynamical Mechanisms of Nonuniversality in 2D Turbulence in the Presence of Coherent Structures\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Dynamical Mechanisms of Nonuniversality in 2D Turbulence in the Presence of Coherent Structures"}],"uid":"27707","created_gmt":"2026-04-19 04:37:35","changed_gmt":"2026-04-19 04:41:04","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2026-04-21T13:00:52-04:00","event_time_end":"2026-04-21T15:00:52-04:00","event_time_end_last":"2026-04-21T15:00:52-04:00","gmt_time_start":"2026-04-21 17:00:52","gmt_time_end":"2026-04-21 19:00:52","gmt_time_end_last":"2026-04-21 19:00:52","rrule":null,"timezone":"America\/New_York"},"location":"Howey Physics Building, Room N110 ","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}