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undergraduate thesis
Analiza nestlačivog strujanja fluida u blizini rotirajućeg diska
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. urn:nbn:hr:235:293265
Pešorda, Filip
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

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

Cite this document

Pešorda, F. (2017). Analiza nestlačivog strujanja fluida u blizini rotirajućeg diska (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:293265

Pešorda, Filip. "Analiza nestlačivog strujanja fluida u blizini rotirajućeg diska." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:293265

Pešorda, Filip. "Analiza nestlačivog strujanja fluida u blizini rotirajućeg diska." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:293265

Pešorda, F. (2017). 'Analiza nestlačivog strujanja fluida u blizini rotirajućeg diska', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 01 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:293265

Pešorda F. Analiza nestlačivog strujanja fluida u blizini rotirajućeg diska [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2017 [cited 2024 December 01] Available at: https://urn.nsk.hr/urn:nbn:hr:235:293265

F. Pešorda, "Analiza nestlačivog strujanja fluida u blizini rotirajućeg diska", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:235:293265

Metadata
TitleAnaliza nestlačivog strujanja fluida u blizini rotirajućeg diska
Title (english)Analysis of incompressible fluid flow near a rotating disk
AuthorFilip Pešorda
MentorIvo Džijan (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2017-03-02, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U radu se analizira nestlačivo stacionarno strujanje fluida u blizini slobodno rotirajućeg diska u turbulentnom i laminarnom režimu strujanja. Za laminarno strujanje sustav Navier-Stokesovih parcijalnih diferencijalnih jednadžbi preveden je, uz određena pojednostavljenja i uvođenje bezdimenzijske udaljenosti od površine diska, u sustav običnih diferencijalnih jednadžbi. Kao rješenja sustava jednadžbi dobivaju se bezdimenzijski profili brzine i tlaka. Na osnovu dobivenih rezultata za bezdimenzijske profile brzine i tlaka određen je koeficijent momenta trenja za laminarno strujanje. Zatim je pokazan način određivanja koeficijenta momenta trenja u turbulentnom režimu strujanja uvođenjem pretpostavki profila pojedinih komponenti brzine i integriranjem jednadžbi po debljini graničnog sloja. Za turbulentno i laminarno strujanje dobivena analitička rješenja uspoređena su s eksperimentalnim rezultatima. Ova usporedba pokazuje dobro slaganje u oba analizirana režima strujanja. Na kraju rada, rješenja dobivena za slobodno rotirajući disk uspoređena su s onima dobivenim za rotirajući disk smješten u kućištu. Iz te usporedbe se zaključuje kako je koeficijent momenta trenja veći u slučaju slobodno rotirajućeg diska nego u slučaju rotirajućeg diska smještenog u kućištu.
Abstract (english)
The paper analyzes the incompressible steady state fluid flow in the vicinity of the free rotating disk for turbulent and laminar flow regime. For laminar flow, system of Navier-Stokes partial differential equations was translated into a system of ordinary differential equations with some simplifications and introduction of the dimensionless distance from the surface of a disk. As a solutions of the equations, dimensionless profiles of speed and pressure was obtained. Coefficient of friction torque for laminar flow was determined on the basis of the results for dimensionless velocity profile and pressure. The method for determining the coefficient of friction torque in a turbulent flow regime was then demonstrated with assumptions for velocity profiles and integration of the equations by the thickness of the boundary layer. For turbulent and laminar flow, obtained analytical solutions were compared with experimental results. This comparison shows good agreement in both flow regimes. At the end of the paper, the solutions obtained for free rotating disk were compared with those obtained on a rotating disk located in the housing. This comparison shows that in the case of free rotating disk, the coefficient of friction torque is higher than those obtained on a disk located in the housing.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:293265
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2019-05-24 14:41:56