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## Optimization of heat transfer between stream of exhaust gases and fuselage in a small aircraft

### Piotr Jaźwiński

#### Abstract

This paper describes optimization of exhaust outlets based on interaction between stream of exhaust fumes and fuselage in a small aircraft. Several modifications on geometry of an exhaust system in an aircraft PZL I-23 were taken up. In order to do that, ANSYS Workbench 16.2 Environment was applied. Optimization is a highly significant process considering economic and durability aspects. The work was conducted in a few steps, which are described below. In a theoretical part, initial technical description and data of investigated object was described. Mathematical model containing equations used to compute heat transfer and fluid flow was also presented. Practical part includes preparation of aircraft's geometry. Different concepts of changed geometrical model was described and illustrated. The next step was generation of computational grid, which was imported to ANSYS Fluent afterwards. Parameters, methodology and graphic representation of grids are presented in next chapters. In the further part of the paper, numerical model is developed. Geometrical planes, assumed as boundary conditions are shown. Model description contains also values of parameters at Boundary Conditions. In addition, properties of air and exhaust gases were presented. Moreover, properties of used materials are taken into account. Chapter contains methodology of conducted calculations in the software as well. Results of carried out simulation are worked out in the last chapters. They are presented graphically with main parameters emphasized. Such values as temperature and velocity distribution on the bottom part of the fuselage or mass fractions at exhaust outlets are determined. To sum up, analysed results and conclusions are compared basing on earlier considerations. Impact of stream of exhaust gases on a fuselage and comparison of each case is found. Analysis contains impingement on aerodynamics of aircraft as well. The most reasonable choice would be geometry with the slightest modifications, taking each case into consideration.
Diploma type
Engineer's / Bachelor of Science
Diploma type
Engineer's thesis
Author
Piotr Jaźwiński (FPAE) Piotr Jaźwiński,, Faculty of Power and Aeronautical Engineering (FPAE)
Title in Polish
Optymalizacja cieplna oddziaływania strugi spalin z kadłubem w małym samolocie
Supervisor
Piotr Łapka (FPAE/IHE) Piotr Łapka,, The Institute of Heat Engineering (FPAE/IHE)Faculty of Power and Aeronautical Engineering (FPAE)
Certifying unit
Faculty of Power and Aeronautical Engineering (FPAE)
Affiliation unit
The Institute of Heat Engineering (FPAE/IHE)
Study subject / specialization
, Energetyka (Power Engineering)
Language
(pl) Polish
Status
Finished
Defense Date
24-03-2016
Issue date (year)
2016
Pages
59
Internal identifier
MEL; PD-3636
Reviewers
Piotr Furmański (FPAE/IHE) Piotr Furmański,, The Institute of Heat Engineering (FPAE/IHE)Faculty of Power and Aeronautical Engineering (FPAE) Piotr Łapka (FPAE/IHE) Piotr Łapka,, The Institute of Heat Engineering (FPAE/IHE)Faculty of Power and Aeronautical Engineering (FPAE)
Keywords in Polish
wymiana ciepła, symulacja numeryczna, optymalizacja, układ wylotowy, samolot
Keywords in English
heat transfer, numerical simulation, optimization, exhaust system, aircraft
Abstract in Polish
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Identyfikator pracy APD: 10320

Uniform Resource Identifier
https://repo.pw.edu.pl/info/bachelor/WUTf65df20d52bc4ce08e9f47fa51b4d0b4/
URN
urn:pw-repo:WUTf65df20d52bc4ce08e9f47fa51b4d0b4

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