{"id":85,"date":"2012-02-09T22:52:57","date_gmt":"2012-02-09T21:52:57","guid":{"rendered":"http:\/\/toschi.phys.tue.nl\/wordpress\/?p=85"},"modified":"2012-02-09T22:52:57","modified_gmt":"2012-02-09T21:52:57","slug":"new-directions-in-turbulence-2012","status":"publish","type":"post","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/new-directions-in-turbulence-2012\/","title":{"rendered":"New Directions in Turbulence 2012"},"content":{"rendered":"
\n

SCIENTIFIC CONTENT<\/strong><\/p>\n

This six-week program (12 March 2012 to 20 April 2012) will focus on recent development in the understanding of fluid dynamics turbulence\u00a0with the goal to identify promising breakthrough directions.<\/p>\n

From the point of view of theoretical physics, turbulence is a classical field theory, out of equilibrium and in a strong coupling\u00a0\u00a0regime.<\/p>\n

Turbulence is\u00a0one of the\u00a0great problems of classical physics still mainly unsolved. With turbulence we mean a physical state of a flow with many\u00a0\u00a0dynamically active variables and far from equilibrium. The first\u00a0\u00a0difficulty in theoretical approaches to turbulence consists in the large number of active degrees of freedoms. The scales where energy is\u00a0\u00a0injected is typically\u00a0\u00a0strongly separated from the scales where energy\u00a0\u00a0is dissipated. Non-linear interactions lead to a strong coupling\u00a0\u00a0between all degrees of freedoms. Energy transfer may be in average\u00a0\u00a0positive, leading to formation of small-scales fluctuations superposed\u00a0\u00a0to large scale structures or in average\u00a0\u00a0negative, leading to\u00a0\u00a0an\u00a0\u00a0accumulation of energy at larger and larger scales. Moreover, fluctuations around the mean can be Gaussian or strongly intermittent, depending on the direction of the energy cascade and on the\u00a0\u00a0dimensionality of the system.\u00a0\u00a0The situation is complicated in\u00a0\u00a0presence of active scalar fields, like for the case of thermal convection, active vector fields, as in magnetohydrodynamics and\/or by\u00a0\u00a0the presence of boundaries, where also a net transfer of momentum is established in the system. The Lagrangian point of view, measuring\u00a0\u00a0underlying fluid velocity riding tracers or inertial particles,\u00a0\u00a0point-like or with a finite size, is also crucial to control statistical properties at different frequencies.<\/p>\n

Among the questions that will be address during the program we cite: is the energy cascade in isotropic turbulence\u00a0\u00a0universal?\u00a0\u00a0What are\u00a0\u00a0the corrections expected in presence of large scale anisotropy? What\u00a0\u00a0happens if external or internal mechanism breaks parity invariance?\u00a0\u00a0What happens at changing the embedding dimensionality? Can we improve\u00a0\u00a0\u00a0sub grid modeling by a better understanding of the energy cascade\u00a0mechanism? What are the effects of strong active fields, like in thermal\u00a0\u00a0convection and MHD? Are large scale structures universal in these\u00a0latter cases? What are the statistical connections between Eulerian\u00a0\u00a0and Lagrangian descriptions. Can 2d and 3d physics coexist? Can we\u00a0smoothly change from a 2d to a 3d systems?\u00a0\u00a0\u00a0What about turbulence in\u00a0\u00a01d turbulence (Burgers equations) in 0d (Shell Models) in larger and\u00a0\u00a0larger dimension\u00a0\u00a0or even in non-integer dimensions?<\/p>\n

A partial answer to even only a small sub-set of these questions will require important synergies between scientists from theory, numerics\u00a0and experiments and would qualify the program as big success.<\/p>\n

The program will be organised in \"focused\" weeks concerning one or two of\u00a0\u00a0the above topics.<\/p>\n

TENTATIVE PROGRAM<\/strong><\/p>\n

12\/03-18\/03 : sub-grid modeling, wall bounded flows, Non Newtonian flows.<\/p>\n

19\/03-25\/03 : 2d and 3d systems. Turbulence in rotating systems; Geophysical flows.<\/p>\n

26\/03-01\/04 : Lagrangian and Eulerian turbulence.<\/p>\n

02\/04-06\/04 : INTERNATIONAL CONFERENCE.<\/p>\n

07\/04-13\/04 : Thermal convection & Magnetohydrodynamics.<\/p>\n

14\/04-20\/04 : Turbulence modeling and theory.<\/p>\n

\u00a0http:\/\/www.kitpc.ac.cn\/program.jsp?id=PN20120312<\/a><\/div>\n
<\/div>\n
<\/div>\n<\/div>\n<\/div> ","protected":false},"excerpt":{"rendered":"

SCIENTIFIC CONTENT This six-week program (12 March 2012 to 20 April 2012) will focus on recent development in the understanding of fluid dynamics turbulence\u00a0with the goal to identify promising breakthrough directions. From the point of view of theoretical physics, turbulence is a classical field theory, out of equilibrium and in a strong coupling\u00a0\u00a0regime. Turbulence is\u00a0one […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[2],"tags":[],"class_list":["post-85","post","type-post","status-publish","format-standard","hentry","category-conferences"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6tiMI-1n","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":82,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/particles-in-turbulence-2012\/","url_meta":{"origin":85,"position":0},"title":"Particles in Turbulence 2012","author":"toschi","date":"February 9, 2012","format":false,"excerpt":"Aim & Description The goal of the workshop is to bring together scientists working in the fundamental physics of particle transport in turbulence and related phenomena. The idea is to focus on a short but intense period (the workshop is organized over 3 full days) and to bring together scientists\u2026","rel":"","context":"In "conferences"","block_context":{"text":"conferences","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/conferences\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":253,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/inverse-energy-cascade-in-three-dimensional-isotropic-turbulence\/","url_meta":{"origin":85,"position":1},"title":"Inverse energy cascade in three-dimensional isotropic turbulence","author":"toschi","date":"June 6, 2013","format":false,"excerpt":"Biferale, L., Musacchio, S. & Toschi, F. (2012). Inverse energy cascade in three-dimensional isotropic turbulence. Physical Review Letters, 108(16):164501 DOI We study the statistical properties of homogeneous and isotropic three-dimensional ($$3D$$) turbulent flows. By introducing a novel way to make numerical investigations of Navier-Stokes equations, we show that all 3D\u2026","rel":"","context":"In \"fundamental\"","block_context":{"text":"fundamental","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/tag\/fundamental\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":89,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/non-ideal-particles-and-aggregates-in-turbulence\/","url_meta":{"origin":85,"position":2},"title":"Non ideal particles and aggregates in turbulence 2012","author":"toschi","date":"February 9, 2012","format":false,"excerpt":"Suspensions of small aggregates are found in many different situations, such as environmental, chemical, industrial or material processes for colloids, polymer manufacturing and aerosols. The control of small aggregates size distribution is a key question for the theoretical investigation, and more importantly for the processing of the suspensions. In turbulent\u2026","rel":"","context":"In "conferences"","block_context":{"text":"conferences","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/conferences\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":138,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/particles-in-turbulence-2013\/","url_meta":{"origin":85,"position":3},"title":"Particles in turbulence 2013","author":"toschi","date":"December 4, 2012","format":false,"excerpt":"Please register on the website July 1, 2013 \u2014 July 5, 2013 Prof. dr. Federico Toschi (Eindhoven University of Technology, Eindhoven) Prof. dr. Eberhard Bodenschatz (Max Planck Institute for Dynamics and Self-Organization, Goettingen) The transport, distribution and collisions of particles in turbulent flows is of fundamental interest, as well as\u2026","rel":"","context":"In "conferences"","block_context":{"text":"conferences","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/conferences\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":144,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/non-spherical-particles-and-aggregates-in-fluid-flows\/","url_meta":{"origin":85,"position":4},"title":"Non-Spherical Particles and Aggregates in Fluid Flows","author":"toschi","date":"December 4, 2012","format":false,"excerpt":"June 17, 2013 \u2014 June 21, 2013 Coordinators: Cristian Marchioli (Universit\u00e0 di Udine, Italy) Federico Toschi (Eindhoven University of Technology, The Netherlands) Dynamics of non-spherical particles and aggregates in fluid flow are encountered both in nature and in industrial applications. Examples for non-spherical particles include airborne solid particles or aerosols,\u2026","rel":"","context":"In "conferences"","block_context":{"text":"conferences","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/conferences\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":76,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/particles-in-complex-flows-2012\/","url_meta":{"origin":85,"position":5},"title":"Particles in complex flows 2012","author":"toschi","date":"February 9, 2012","format":false,"excerpt":"The transport, distribution and collisions of particles in turbulent flows is of fundamental interest, as well as being present in a variety of engineering and naturally occurring flows. Examples of related scientific challenges include rain formation in clouds, pollution dispersion in the atmosphere, emission reduction in combustion and plankton population\u2026","rel":"","context":"In "conferences"","block_context":{"text":"conferences","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/conferences\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/posts\/85","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/comments?post=85"}],"version-history":[{"count":0,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/posts\/85\/revisions"}],"wp:attachment":[{"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/media?parent=85"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/categories?post=85"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/tags?post=85"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}