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master's thesis
Utjecaj razmaka između vodećeg i pratećeg automobila na koeficijente aerodinamičkih sila
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. urn:nbn:hr:235:448502
Pašić, Aleksandar
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Pašić, A. (2015). Utjecaj razmaka između vodećeg i pratećeg automobila na koeficijente aerodinamičkih sila (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:448502

Pašić, Aleksandar. "Utjecaj razmaka između vodećeg i pratećeg automobila na koeficijente aerodinamičkih sila." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. https://urn.nsk.hr/urn:nbn:hr:235:448502

Pašić, Aleksandar. "Utjecaj razmaka između vodećeg i pratećeg automobila na koeficijente aerodinamičkih sila." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. https://urn.nsk.hr/urn:nbn:hr:235:448502

Pašić, A. (2015). 'Utjecaj razmaka između vodećeg i pratećeg automobila na koeficijente aerodinamičkih sila', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 01 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:448502

Pašić A. Utjecaj razmaka između vodećeg i pratećeg automobila na koeficijente aerodinamičkih sila [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2015 [cited 2024 December 01] Available at: https://urn.nsk.hr/urn:nbn:hr:235:448502

A. Pašić, "Utjecaj razmaka između vodećeg i pratećeg automobila na koeficijente aerodinamičkih sila", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:235:448502

Metadata
TitleUtjecaj razmaka između vodećeg i pratećeg automobila na koeficijente aerodinamičkih sila
Title (english)The influence of the distance between leading and trailing car on aerodynamic coefficients
AuthorAleksandar Pašić
MentorIvo Džijan (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2015-07-16, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Pri gibanju automobila aerodinamičke sile otpora i uzgona te njihova raspodjela mijenjaju se u ovisnosti o više parametara jedan od kojih je i prisutnost drugih automobila u neposrednoj blizini. Posebnu pozornost ovoj situaciji treba posvetiti kod natjecateljskih automobila koji na sebi imaju dodatne aerodinamičke elemente u svrhu poboljšanja dinamičkih svojstava. Spomenuti aerodinamički elementi relativno su osjetljivi na karakteristike nailazećeg strujanja te su podložni odvajanjima i zastojima strujanja te gubicima efikasnosti kada se nađu u aerodinamičkom vrtložnom tragu vozila ispred. U ovom radu istražena je ovisnost aerodinamičkih sila otpora i uzgona u ovisnosti o međusobnom razmaku između pojednostavljenih modela vodećeg i pratećeg automobila klase LM GTE (prethodno FIA GT2). Uz pomoć programskog paketa ANSYS FLUENT numerički je simulirano nestlačivo viskozno opstrujavanje zraka oko automobila, pri čemu je variran međusobni razmak x u odnosu na duljinu vozila L od x / L = 0.125 do 4. Na temelju rezultata dobivena je zavisnost koeficijenata aerodinamičkih sila otpora i uzgona za simulaciju vožnje automobila tijekom utrke. Dobiveni rezultati potvrđuju neke od pretpostavki o ponašanju sile otpora i uzgona u ovisnosti o međusobnom razmaku vozila.
Abstract (english)
Aerodynamic forces of drag and lift and their distribution are subject to change depending on many parameters, one of which is the proximity of other vehicles. Special attention should be paid to this effect when considering racing cars which carry additional aerodynamic elements which aid their performance. Aforementioned aerodynamic elements are sensitive to the characteristics of the oncoming flow and are prone to flow separation, stall and loss of efficiency when subjected to a disturbed flow field behind a leading vehicle. The dependency of aerodynamics forces of drag and lift on inter-vehicle spacing of a simplified LM GTE class vehicle (formerly FIA GT2) was examined in this thesis. ANSYS FLUENT was used for the numerical simulation of an incompressible viscous flow around the vehicles, while the inter-vehicle spacing x was varied based on the vehicle length L between x / L = 0.125 and 4. Dependence of aerodynamic forces of drag and lift on inter-vehicle spacing was obtained based on the results of the numerical simulation. Obtained results confirm some of the assumptions about the drag and lift force behavior at changing inter-vehicle spacing.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:448502
Study programmeTitle: Mechanical 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
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-05-27 10:07:09