{"id":1283,"date":"2023-08-22T10:58:27","date_gmt":"2023-08-22T10:58:27","guid":{"rendered":"https:\/\/sites.nyuad.nyu.edu\/cities-qa\/?post_type=event&p=1283"},"modified":"2024-06-05T20:35:29","modified_gmt":"2024-06-05T20:35:29","slug":"traffic-flow-as-a-simple-fluid-5","status":"publish","type":"event","link":"https:\/\/sites.nyuad.nyu.edu\/cities\/event\/traffic-flow-as-a-simple-fluid-5\/","title":{"rendered":"Traffic Flow as a Simple Fluid"},"content":{"rendered":"

Engineering Seminar Series (Collaboration with CITIES): <\/strong><\/h3>\n

Traffic Flow as a Simple Fluid: Towards a Scaling Theory of <\/strong>Urban Congestion<\/strong><\/h3>\n

On March 16th, 2023, CITIES, in collaboration with the Engineering department, organized the Engineering seminar series talk \u201cTraffic Flow as a Simple Fluid: Towards a Scaling Theory of Urban Congestion,\u201d presented by Prof. Jorge Laval, Georgia Institute of Technology.<\/p>\n

In this talk, Prof. Jorge Laval spoke about the analogy between the theory of phase transitions in simple fluids and vehicular traffic flow that has long been suspected, promising a new level of understanding of urban congestion by standing on one of the firmer foundations in physics. The obstacle has been the interpretation of the thermal energy of the gas-particle system, which remains unknown. This talk proposed the flow of cars through the network as a viable interpretation, where the fundamental diagram for traffic flow would be analogous to the coexistence curve in gas-liquid phase transitions. Thanks to the power-law form of the coexistence curve, it was possible to formalize that the resulting network traffic model belongs to the Kardar-Parisi-Zhang universality class. The scaling relationships arising in this universality class are found to be consistent with West\u2019s scaling theory for cities. It is shown that congestion costs (delays + fuel consumption) scale superlinearly with city population, possibly and worryingly more so than predicted by West\u2019s theory. Implications for sustainability and resiliency were discussed.<\/p>\n","protected":false},"excerpt":{"rendered":"

CITIES, in collaboration with the Engineering department, organized the Engineering seminar series talk \u201cTraffic Flow as a Simple Fluid: Towards a Scaling Theory of Urban Congestion,\u201d presented by Prof. Jorge Laval, Georgia Institute of Technology.<\/p>\n","protected":false},"featured_media":5231,"parent":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"events_categories":[30],"class_list":["post-1283","event","type-event","status-publish","has-post-thumbnail","hentry","events_categories-30"],"acf":[],"_links":{"self":[{"href":"https:\/\/sites.nyuad.nyu.edu\/cities\/wp-json\/wp\/v2\/event\/1283","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.nyuad.nyu.edu\/cities\/wp-json\/wp\/v2\/event"}],"about":[{"href":"https:\/\/sites.nyuad.nyu.edu\/cities\/wp-json\/wp\/v2\/types\/event"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sites.nyuad.nyu.edu\/cities\/wp-json\/wp\/v2\/media\/5231"}],"wp:attachment":[{"href":"https:\/\/sites.nyuad.nyu.edu\/cities\/wp-json\/wp\/v2\/media?parent=1283"}],"wp:term":[{"taxonomy":"events_categories","embeddable":true,"href":"https:\/\/sites.nyuad.nyu.edu\/cities\/wp-json\/wp\/v2\/events_categories?post=1283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}