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master's thesis
Numerička i eksperimentalna optimizacija aeropaketa trkaćeg vozila
Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2022. urn:nbn:hr:179:281308
Dodig, Luka
University of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
Department of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture

Cite this document

Dodig, L. (2022). Numerička i eksperimentalna optimizacija aeropaketa trkaćeg vozila (Master's thesis). Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:179:281308

Dodig, Luka. "Numerička i eksperimentalna optimizacija aeropaketa trkaćeg vozila." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:179:281308

Dodig, Luka. "Numerička i eksperimentalna optimizacija aeropaketa trkaćeg vozila." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:179:281308

Dodig, L. (2022). 'Numerička i eksperimentalna optimizacija aeropaketa trkaćeg vozila', Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, accessed 11 July 2024, https://urn.nsk.hr/urn:nbn:hr:179:281308

Dodig L. Numerička i eksperimentalna optimizacija aeropaketa trkaćeg vozila [Master's thesis]. Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture; 2022 [cited 2024 July 11] Available at: https://urn.nsk.hr/urn:nbn:hr:179:281308

L. Dodig, "Numerička i eksperimentalna optimizacija aeropaketa trkaćeg vozila", Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:179:281308

Metadata
TitleNumerička i eksperimentalna optimizacija aeropaketa trkaćeg vozila
Title (english)Numerical and experimental optimisation of race car aero package
AuthorLuka Dodig
MentorIvo Marinić-Kragić https://orcid.org/0000-0002-9680-6193 (mentor)
GranterUniversity of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
(Department of Mechanical Engineering and Naval Architecture)
Split
Defense date and country2022-07-14, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U ovom radu je pojašnjen pristup i slijed postupaka za optimizaciju aeropaketa na jednom bolidu koji se može natjecati na natjecanju formule student. Osim analize i optimizacije objašnjeno je kako korelirati rezultate eksperimenta sa simulacijom. Nadalje pojašnjene su metode koje su korištenje pri izvršenju eksperimenata koji se vežu uz aerodinamiku bolida. Završno je objašnjen način izrade pojedinih krila. Za numeričku optimizaciju je korištena je 3D računalna dinamika fluida (CFD). Ispitano je nekoliko različitih modela turbulencije među kojima i relativno nova varijanta generaliziranog k-omega modela (GEKO) koji dopušta veliku fleksibilnost u izmjeni parametara turbulencije. Međutim, 4-jednadžbeni SST model se pokazao najbolji. Prezentiran je način parametrizacija 3D geometrijskog modela (CAD) te odabir primjerenih varijabli optimizacije s obzirom na ograničenja dugotrajne 3D CFD simulacije. Sama optimizacija je provedena kao jedno-kriterijska s ciljem povećanja sile negativnog uzgona uz ograničenje sile otpora. Za stražnji aeropaket postignuta je sila uzgona od 300 N pri brzini od 50 km/h. Eksperiment proveden u vjetrotunelu na FESBu je pokazao da se za odabrani aeroprofil točka maksimalnog koeficijenta uzgona poklapa s CFD rezultatima pri niskom Reynolds broju. Ovo su obećavajući rezultati koji pokazuju da su korištene metode za analizu primjerene i za buduću upotrebu.
Abstract (english)
This paper explains the approach and sequence of procedures for optimizing the aero package for one car that can compete in the Formula Student competition. In addition to the analysis and the optimization, it is explained how to correlate the results of the experiment with the simulation. Furthermore, the methods used in the execution of experiments related to the aerodynamics of the car are explained. Finally, the method of making individual wings is explained. For numerical optimization 3D computational fluid dynamics (CFD) was used. Several different turbulence models were used, among which also the new generalized k-omega turbulence model (GEKO) which allows several user defined turbulence parameters. However, 4-equation SST turbulence model has shown betters results. A method for 3D geometry parameterization was presented together with the proposed selection of several geometric parameters which are appropriate for optimization. The optimization was performed as a single-objective with a goal of increasing downforce with constrained drag. For rear aero package, 300N downforce was achieved at 50 km/h. Wind tunnel experiment has shown that for the selected airfoil, the point of maximum lift coefficient agrees with CFD results at low Reynolds number. These are promising results which show that the applied methods are appropriate for future word.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:179:281308
Study programmeTitle: Mechanical Engineering; specializations in: Structures and Energy Technology, Computer Aided Design and Engineering, Production Mechanical Engineering
Course: Computer Aided Design and Engineering
Study programme type: university
Study level: graduate
Academic / professional title: Magistar/magistra inženjer/inženjerka strojarstva (Magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
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Created on2023-03-28 08:15:56