Micro-physical modeling of aircraft exhaust plumes and condensation Trails
Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2018.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
| Published: |
Massachusetts Institute of Technology
2018
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/119298 |
| _version_ | 1826194733229146112 |
|---|---|
| author | Fritz, Thibaud Matthieu Martin |
| author2 | Steven R.H. Barrett. |
| author_facet | Steven R.H. Barrett. Fritz, Thibaud Matthieu Martin |
| author_sort | Fritz, Thibaud Matthieu Martin |
| collection | MIT |
| description | Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2018. |
| first_indexed | 2024-09-23T10:00:57Z |
| format | Thesis |
| id | mit-1721.1/119298 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:00:57Z |
| publishDate | 2018 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1192982022-09-29T11:37:43Z Micro-physical modeling of aircraft exhaust plumes and condensation Trails Fritz, Thibaud Matthieu Martin Steven R.H. Barrett. Massachusetts Institute of Technology. Department of Aeronautics and Astronautics. Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Aeronautics and Astronautics. Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2018. Cataloged from PDF version of thesis. Includes bibliographical references (pages 63-68). The ability to quantitatively assess the environmental impacts of air transport operations is necessary to estimate their current and future impacts on the environment. Emissions from aircraft engines are a significant contributor to atmospheric NOx driving climate change, air quality impacts and other environmental concerns. To quantify these effects, global chemistry-transport models are frequently used. However, such models assume homogeneous and instant dilution into large-scale grid cells and therefore neglect micro-physical processes, such as contrail formation, occurring in aircraft wakes. This assumption leads to inaccurate estimates of NOy partitioning, and thus, an over-prediction of ozone production. To account for non-linear plume processes, a Lagrangian aircraft plume model has been implemented. It includes a unified tropospheric-stratospheric chemical mechanism that incorporates heterogeneous chemistry. Micro-physical processes are considered throughout the entire plume lifetime. The dynamics of the plume are solved simultaneously using an operator splitting method. The plume model is used to quantify how the in-plume chemical composition is affected in response to various environmental conditions and different engine and/or fuel characteristics. Results demonstrate that an instant dilution model overestimates ozone production and accelerates conversion of nitrogen oxides compared to the plume model. Sensitivities to the NOx emission index have been derived and the dependence of the plume treatment on the background atmosphere mixing ratios, pressure and latitude has been investigated for a future regional scale assessment of the aviation sector. The cumulative impact of successive flights has been estimated. Contrail micro-physical and chemical properties have been computed under different scenarios. This aircraft plume model has been extensively validated and enables an in-depth assessment of the impact of one or multiple flights on local atmospheric conditions. by Thibaud M. Fritz. S.M. 2018-11-28T15:42:05Z 2018-11-28T15:42:05Z 2018 2018 Thesis http://hdl.handle.net/1721.1/119298 1061859705 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 68 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics. Fritz, Thibaud Matthieu Martin Micro-physical modeling of aircraft exhaust plumes and condensation Trails |
| title | Micro-physical modeling of aircraft exhaust plumes and condensation Trails |
| title_full | Micro-physical modeling of aircraft exhaust plumes and condensation Trails |
| title_fullStr | Micro-physical modeling of aircraft exhaust plumes and condensation Trails |
| title_full_unstemmed | Micro-physical modeling of aircraft exhaust plumes and condensation Trails |
| title_short | Micro-physical modeling of aircraft exhaust plumes and condensation Trails |
| title_sort | micro physical modeling of aircraft exhaust plumes and condensation trails |
| topic | Aeronautics and Astronautics. |
| url | http://hdl.handle.net/1721.1/119298 |
| work_keys_str_mv | AT fritzthibaudmatthieumartin microphysicalmodelingofaircraftexhaustplumesandcondensationtrails |