{"502451":{"#nid":"502451","#data":{"type":"news","title":"National Academy of Science Recognizes P.K. Yeung\u0027s Research on Turbulence","body":[{"value":"\u003Cp\u003EFoundational research in turbulent fluid flows headed up by Professor\u003Cstrong\u003EP.K. Yeung\u0026nbsp;\u003C\/strong\u003Ehas been published in the\u003Cem\u003E\u003Cstrong\u003E\u003Ca href=\u0022http:\/\/www.pnas.org\/content\/early\/2015\/09\/29\/1517368112\u0022\u003EProceedings of the National Academy of Sciences\u003C\/a\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/em\u003E(PNAS).\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EIn work supported by grants from the National Science Foundation, Yeung, his Ph.D. student\u0026nbsp;\u003Cstrong\u003EX. M, Zhai\u003C\/strong\u003E, and his long-time collaborator\u0026nbsp;\u003Cstrong\u003EKaterpalli R. Sreenivasan\u003C\/strong\u003E\u0026nbsp;of New York University produced the paper entitled \u201c\u003Cem\u003EExtreme Events in Computational Turbulence\u003C\/em\u003E,\u0022 which appeared in the prestigious journal\u003Cstrong\u003E\u003Cem\u003E\u0026nbsp;\u003C\/em\u003E\u003C\/strong\u003E\u003Cem\u003ES\u003C\/em\u003Eept. 29.\u003Cstrong\u003E\u003Cem\u003E\u003Cbr \/\u003E\u003C\/em\u003E\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EThe article describes the results of one of the largest computations devoted solely to the study of small scales. By performing direct numerical simulations of homogeneous and isotropic turbulence on a massive scale, their work has led to a major advance in the general understanding of turbulence small-scale structure, which has important implications for many fields of science and engineering.\u003C\/p\u003E\u003Cp\u003ETraditionally, phenomenological models of turbulent fluctuations have been used by scientists and engineers to obtain an approximation of the gross properties of turbulent flows, such as aerodynamic drag and mixing rates in an aircraft engine. Yeung\u0027s work allows scientists to understand the underlying physical processes better and thereby enhance the potential for devising new and improved models.\u003C\/p\u003E\u003Cp\u003E\u0022Professor Yeung\u2019s work on extreme behaviors in turbulence is of fundamental importance,\u201d said William R. T. Oakes Professor and school chair\u0026nbsp;\u003Cstrong\u003EVigor Yang\u003C\/strong\u003E.\u003C\/p\u003E\u003Cp\u003E\u0022So much has not been well-studied. But Professor Yeung\u0027s work has the potential to transform the field.\u0022\u003C\/p\u003E\u003Cp\u003EYeung\u0027s work has been made possible through his long-standing successes in competitive peer-reviewed proposals for major resource allocations at a number of national supercomputer centers, including those supported by the NSF and those operated by the US Department of Energy at its national laboratories.\u003C\/p\u003E\u003Cp\u003EIn particular, numerical simulations reported in the new PNAS paper have required almost 300 million core hours at the Blue Waters Petascale supercomputer at the University of Illinois, Urbana-Champaign, which received a $200 million grant from NSF to support the computer in 2007.\u003C\/p\u003E\u003Cp\u003EComputational resources of this magnitude are very expensive, highly sought after, and well beyond the capabilities of a single university campus without major support on a national scale. Yeung\u0027s team is one of a select few to make it through a very rigorous selection process for access to these resources.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Foundational research in turbulent fluid flows headed up by Professor P.K. Yeung has been published in the Proceedings of the National Academy of Sciences (PNAS)."}],"uid":"30502","created_gmt":"2016-02-17 17:28:46","changed_gmt":"2016-10-08 03:20:46","author":"Sapna Mistry","boilerplate_text":"","field_publication":"","field_article_url":"","dateline":{"date":"2015-10-01T00:00:00-04:00","iso_date":"2015-10-01T00:00:00-04:00","tz":"America\/New_York"},"extras":[],"hg_media":{"502441":{"id":"502441","type":"image","title":"Professor P.K. Yeung","body":null,"created":"1455904800","gmt_created":"2016-02-19 18:00:00","changed":"1475895263","gmt_changed":"2016-10-08 02:54:23","alt":"Professor P.K. Yeung","file":{"fid":"204752","name":"yeung-pk1.jpg","image_path":"\/sites\/default\/files\/images\/yeung-pk1_0.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/yeung-pk1_0.jpg","mime":"image\/jpeg","size":97665,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/yeung-pk1_0.jpg?itok=stK787Lf"}}},"media_ids":["502441"],"groups":[{"id":"1239","name":"School of Aerospace Engineering"}],"categories":[{"id":"136","name":"Aerospace"},{"id":"134","name":"Student and Faculty"}],"keywords":[{"id":"126111","name":"GT-AE"},{"id":"167015","name":"National Academy of Science"},{"id":"169951","name":"PK Yeung"},{"id":"1255","name":"turbulence"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":["kathleen.moore@ae.gatech.edu"],"slides":[],"orientation":[],"userdata":""}}}