{"id":919,"date":"2023-11-13T10:25:12","date_gmt":"2023-11-13T15:25:12","guid":{"rendered":"https:\/\/aeroetslab.ca\/?p=919"},"modified":"2023-11-22T12:37:15","modified_gmt":"2023-11-22T17:37:15","slug":"eulerian-lagrangian-cfd-microphysics-modeling-of-a-near-field-contrail-from-a-realistic-turbofan","status":"publish","type":"post","link":"https:\/\/aeroetslab.ca\/en\/2023\/11\/13\/eulerian-lagrangian-cfd-microphysics-modeling-of-a-near-field-contrail-from-a-realistic-turbofan\/","title":{"rendered":"(2021) Eulerian\u2013Lagrangian CFD-microphysics modeling of a near-field contrail from a realistic turbofan"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Date de publication: F\u00e9vrier 2021<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Auteur(s): S\u00e9bastien Cantin, Mohamed Chouak, Fran\u00e7ois Morency, Fran\u00e7ois Garnier<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Journal: International Journal of Research Engine (23)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DOI: <a href=\"https:\/\/doi.org\/10.1177\/1468087421993961\" target=\"_blank\" rel=\"noreferrer noopener\">10.1177\/1468087421993961<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\">Abstract<\/h2>\n\n\n\n<p class=\"has-text-align-justify wp-block-paragraph\">Aircraft contrails contribute to climate change through global radiative forcing. As part of the general effort aimed at developing reliable decision-making tools, this paper demonstrates the feasibility of implementing a Lagrangian ice microphysical module in a commercial CFD code to characterize the early development of near-field contrails. While engine jets are highly parameterized in most existing models in a way that neglects the nozzle exit-related aspects, our model accounts for the geometric complexity of modern turbofan exhausts. The modeling strategy is based on three-dimensional URANS simulations of an aircraft nozzle exit involving a bypass and a core jet (Eulerian gas phase). Solid soot and ice particles (dispersed phase) are individually tracked using a Lagrangian approach. The implemented microphysical module accounts for the main process of water-vapor condensation on pre-activated soot particles known as heterogeneous condensation. The predictive capabilities of the proposed model are demonstrated through a comprehensive validation set based on the jet-flow dynamics and turbulence statistics in the case of compressible, turbulent coaxial jets. Simulations of contrail formation from a realistic nozzle-exit geometry of the CFM56-3 engine (short-cowl nozzle delivering a dual stream jet with a bypass rate of 5.3) were also carried out in typical cruise flight conditions ensuring contrail formation. The model provides reliable predictions in terms of the plume dilution and ice-particle properties as compared to available in-flight and numerical data. Such a model can then be used to characterize the impact of nozzle-exit parameters on the optical and microphysical properties of near-field contrails.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cantin S, Chouak M, Morency F, Garnier F. Eulerian\u2013Lagrangian CFD-microphysics modeling of a near-field contrail from a realistic turbofan. <em>International Journal of Engine Research<\/em>. 2022;23(4):661-677. doi:<a href=\"https:\/\/doi.org\/10.1177\/1468087421993961\" target=\"_blank\" rel=\"noreferrer noopener\">10.1177\/1468087421993961<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Date de publication: F\u00e9vrier 2021 Auteur(s): S\u00e9bastien Cantin, Mohamed Chouak, Fran\u00e7ois Morency, Fran\u00e7ois Garnier Journal: International Journal of Research Engine (23) DOI: 10.1177\/1468087421993961 Abstract Aircraft contrails contribute to climate change through global radiative forcing. As part of the general effort aimed at developing reliable decision-making tools, this paper demonstrates the feasibility of implementing a Lagrangian [&hellip;]<\/p>\n","protected":false},"author":238496019,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\n\n{excerpt}\n\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[6359],"tags":[],"class_list":["post-919","post","type-post","status-publish","format-standard","hentry","category-article-de-journal"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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