{"id":166,"date":"2022-10-28T14:49:39","date_gmt":"2022-10-28T14:49:39","guid":{"rendered":"https:\/\/sites.tntech.edu\/ppats\/?page_id=166"},"modified":"2026-06-15T19:49:51","modified_gmt":"2026-06-15T19:49:51","slug":"seminars","status":"publish","type":"page","link":"https:\/\/sites.tntech.edu\/ppats\/seminars\/","title":{"rendered":"Webinars"},"content":{"rendered":"\n
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Join email list<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

Upcoming<\/em><\/strong><\/p>\n\n\n\n

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Tuesday, June 15, 11 am CST (Click to Join)<\/strong><\/a><\/p>\n<\/div>\n\n\n\n

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A CFD\u2013LES Framework for Simulating Contrail Formation from Ammonia Aviation Fuels<\/a><\/h2>\n<\/div>\n<\/div>\n\n\n\n

Contrail formation is one of the most significant non-CO2 climate impacts of aircraft operations, outweighing the radiative forcing from CO2 emissions by almost a factor of two. Understanding differences in microphysical evolution and optical characteristics between contrails produced by traditional and carbon-free aviation fuels is, therefore, crucial to ensuring the successful development of climate-friendly propulsion systems. While ammonia is considered a promising hydrogen-based fuel alternative, its contrail formation and persistence characteristics remain uncertain owing to unique thermodynamic conditions in the aircraft’s wake. While soot, acting as a primary nucleation site in contrails produced by traditional fuels, is absent in the ammonia-system’s exhaust, water vapor emissions are significantly increased, and contrail nucleation may still occur on ambient aerosol populations at upper tropospheric levels. To assess the climate impacts of ammonia-powered contrails, a specialized CFD contrail module has been developed within the atmospheric code Meso-NH, based on the microphysical parameterization LIMA (Liquid Ice Multiple Aerosols) and coupled with anelastic and pseudo-incompressible formulations. To reconcile the significantly varying spatial and temporal scales throughout a contrail’s lifetime, the model couples two temporal LES domains specialized to the jet, vortex, and early-dissipation regimes by superimposing synthetic atmospheric and wake-turbulence fields. The development of this model paves the way to enabling the first detailed simulation-backed comparison of optical and persistence characteristics between contrails produced by ammonia and kerosene.<\/p>\n\n\n\n

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Conceptual Design and Simulation of an Ammonia-Cracking Combustor<\/strong> <\/a><\/strong><\/p>\n\n\n\n

Aerodynamic Study of Boeing 737-800 and Truss-Braced Wing Aircrafts Using CFD Techniques<\/strong><\/h3>\n\n\n\n
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 A Comprehensive Optimizer for Multi-Objective and Multidisciplinary Applications<\/a><\/strong><\/p>\n\n\n\n

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Axial Fan Optimization for High-Bypass SOFC-C-GT Hybrid System<\/a><\/strong><\/p>\n\n\n\n

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An Exploration of Ammonia NOx Emissions Using CFD<\/a><\/strong><\/p>\n\n\n\n

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Effects of SOFC Pressurization and Investigation of SOFC Gas Turbine Hybrids for Aerospace Applications<\/a><\/strong><\/p>\n\n\n\n

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Tennessee Tech
University\u2019s Pressurized SOFC Test Stand Updates and Progress Through 2024<\/a><\/strong><\/p>\n\n\n\n

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Investigation of Ammonia Fed SOFCC-GT Hybrid System for Commercial Aviation<\/a><\/strong><\/p>\n\n\n\n

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Design and Manufacture of an Anode Ejector to Boost System Efficiency of a 1kW SOFC<\/strong><\/p>\n\n\n\n

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Electrochemical Impedance Analysis on Effects from Pressurization on Tubular SOFC\u2019s Performance and Electrode Kinetics<\/a><\/strong><\/p>\n\n\n\n

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Zero\/Low Emission Commercial Aircraft Powered by Solid Oxide Fuel Cell Turbogenerator Hybrid<\/a> <\/strong><\/p>\n\n\n\n

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Design and Operation of Solid Oxide Electrochemical Cell Systems for Space Applications<\/a><\/strong><\/p>\n\n\n\n

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SWaP Analysis and Optimization for SOFC-C Hybrid System for Commercial Aviation<\/a><\/strong><\/p>\n\n\n\n

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Modeling of a SOFC Combustor Hybrid Cycle for Commercial Electric Aviation<\/a><\/strong><\/p>\n\n\n\n

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Multiscale Analysis and Design of Solid Oxide Fuel Cells for On-orbit Space Power<\/a><\/strong><\/p>\n<\/div><\/div>\n\n\n\n

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Analysis of Active Cooling System for High Power Density Bio-LNG Cooled Electric Motors for Electric Aircraft<\/a><\/strong><\/p>\n\n\n\n

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Join email list Upcoming Tuesday, June 15, 11 am CST (Click to Join) Add to Outlook Calendar Add to Google Calendar A CFD\u2013LES Framework for Simulating Contrail Formation from Ammonia Aviation Fuels Contrail formation is one of the most significant non-CO2 climate impacts of aircraft operations, outweighing the radiative forcing from CO2 emissions by almost a factor of two. Understanding<\/p>\n","protected":false},"author":152,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-166","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.tntech.edu\/ppats\/wp-json\/wp\/v2\/pages\/166","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.tntech.edu\/ppats\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.tntech.edu\/ppats\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.tntech.edu\/ppats\/wp-json\/wp\/v2\/users\/152"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.tntech.edu\/ppats\/wp-json\/wp\/v2\/comments?post=166"}],"version-history":[{"count":117,"href":"https:\/\/sites.tntech.edu\/ppats\/wp-json\/wp\/v2\/pages\/166\/revisions"}],"predecessor-version":[{"id":617,"href":"https:\/\/sites.tntech.edu\/ppats\/wp-json\/wp\/v2\/pages\/166\/revisions\/617"}],"wp:attachment":[{"href":"https:\/\/sites.tntech.edu\/ppats\/wp-json\/wp\/v2\/media?parent=166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}